components/metrics: Add runtime memory leak detector

third_party/tcmalloc/chromium/src/farmhash.cc

Index: third_party/tcmalloc/chromium/src/farmhash.cc
diff --git a/third_party/tcmalloc/chromium/src/farmhash.cc b/third_party/tcmalloc/chromium/src/farmhash.cc
new file mode 100644
index 0000000000000000000000000000000000000000..78dc5242fe965a7196e57199722d6339b2702e66
--- /dev/null
+++ b/third_party/tcmalloc/chromium/src/farmhash.cc
@@ -0,0 +1,11854 @@
+// Copyright (c) 2014 Google, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+// FarmHash, by Geoff Pike
+
+#include "farmhash.h"
+// FARMHASH ASSUMPTIONS: Modify as needed, or use -DFARMHASH_ASSUME_SSE42 etc.
+// Note that if you use -DFARMHASH_ASSUME_SSE42 you likely need -msse42
+// (or its equivalent for your compiler); if you use -DFARMHASH_ASSUME_AESNI
+// you likely need -maes (or its equivalent for your compiler).
+
+#ifdef FARMHASH_ASSUME_SSSE3
+#undef FARMHASH_ASSUME_SSSE3
+#define FARMHASH_ASSUME_SSSE3 1
+#endif
+
+#ifdef FARMHASH_ASSUME_SSE41
+#undef FARMHASH_ASSUME_SSE41
+#define FARMHASH_ASSUME_SSE41 1
+#endif
+
+#ifdef FARMHASH_ASSUME_SSE42
+#undef FARMHASH_ASSUME_SSE42
+#define FARMHASH_ASSUME_SSE42 1
+#endif
+
+#ifdef FARMHASH_ASSUME_AESNI
+#undef FARMHASH_ASSUME_AESNI
+#define FARMHASH_ASSUME_AESNI 1
+#endif
+
+#ifdef FARMHASH_ASSUME_AVX
+#undef FARMHASH_ASSUME_AVX
+#define FARMHASH_ASSUME_AVX 1
+#endif
+
+#if !defined(FARMHASH_CAN_USE_CXX11) && defined(LANG_CXX11)
+#define FARMHASH_CAN_USE_CXX11 1
+#else
+#undef FARMHASH_CAN_USE_CXX11
+#define FARMHASH_CAN_USE_CXX11 0
+#endif
+
+// FARMHASH PORTABILITY LAYER: Runtime error if misconfigured
+
+#ifndef FARMHASH_DIE_IF_MISCONFIGURED
+#define FARMHASH_DIE_IF_MISCONFIGURED do { *(char*)(len % 17) = 0; } while (0)
+#endif
+
+// FARMHASH PORTABILITY LAYER: "static inline" or similar
+
+#ifndef STATIC_INLINE
+#define STATIC_INLINE static inline
+#endif
+
+// FARMHASH PORTABILITY LAYER: LIKELY and UNLIKELY
+
+#if !defined(LIKELY)
+#if defined(FARMHASH_NO_BUILTIN_EXPECT) || (defined(FARMHASH_OPTIONAL_BUILTIN_EXPECT) && !defined(HAVE_BUILTIN_EXPECT))

[jar (doing other things), 2015/07/28 06:17:51]

nit: Probably use a backslash to get this to wrap at 80 columns... and still be
parsed correctly.  Probably indent the "second line" by 4 from the left edge.

You might even put the backslash just a character space after the "||" and then
I *think* the second line will just fit ;-).

You already did this sort of indent down around line 105.

+#define LIKELY(x) (x)
+#else
+#define LIKELY(x) (__builtin_expect(!!(x), 1))
+#endif
+#endif
+
+#undef UNLIKELY
+#define UNLIKELY(x) !LIKELY(!(x))
+
+// FARMHASH PORTABILITY LAYER: endianness and byteswapping functions
+
+#ifdef WORDS_BIGENDIAN
+#undef FARMHASH_BIG_ENDIAN
+#define FARMHASH_BIG_ENDIAN 1
+#endif
+
+#if defined(FARMHASH_LITTLE_ENDIAN) && defined(FARMHASH_BIG_ENDIAN)
+#error
+#endif
+
+#if !defined(FARMHASH_LITTLE_ENDIAN) && !defined(FARMHASH_BIG_ENDIAN)
+#define FARMHASH_UNKNOWN_ENDIAN 1
+#endif
+
+#if !defined(bswap_32) || !defined(bswap_64)
+#undef bswap_32
+#undef bswap_64
+
+#if defined(HAVE_BUILTIN_BSWAP) || defined(__clang__) ||                \
+  (defined(__GNUC__) && ((__GNUC__ == 4 && __GNUC_MINOR__ >= 8) ||      \
+                         __GNUC__ >= 5))
+// Easy case for bswap: no header file needed.
+#define bswap_32(x) __builtin_bswap32(x)
+#define bswap_64(x) __builtin_bswap64(x)
+#endif
+
+#endif
+
+#if defined(FARMHASH_UNKNOWN_ENDIAN) || !defined(bswap_64)
+
+#ifdef _MSC_VER
+
+#undef bswap_32
+#undef bswap_64
+#define bswap_32(x) _byteswap_ulong(x)
+#define bswap_64(x) _byteswap_uint64(x)
+
+#elif defined(__APPLE__)
+
+// Mac OS X / Darwin features
+#include <libkern/OSByteOrder.h>
+#undef bswap_32
+#undef bswap_64
+#define bswap_32(x) OSSwapInt32(x)
+#define bswap_64(x) OSSwapInt64(x)
+
+#elif defined(__sun) || defined(sun)
+
+#include <sys/byteorder.h>
+#undef bswap_32
+#undef bswap_64
+#define bswap_32(x) BSWAP_32(x)
+#define bswap_64(x) BSWAP_64(x)
+
+#elif defined(__FreeBSD__)
+
+#include <sys/endian.h>
+#undef bswap_32
+#undef bswap_64
+#define bswap_32(x) bswap32(x)
+#define bswap_64(x) bswap64(x)
+
+#elif defined(__OpenBSD__)
+
+#include <sys/types.h>
+#undef bswap_32
+#undef bswap_64
+#define bswap_32(x) swap32(x)
+#define bswap_64(x) swap64(x)
+
+#elif defined(__NetBSD__)
+
+#include <sys/types.h>
+#include <machine/bswap.h>
+#if defined(__BSWAP_RENAME) && !defined(__bswap_32)
+#undef bswap_32
+#undef bswap_64
+#define bswap_32(x) bswap32(x)
+#define bswap_64(x) bswap64(x)
+#endif
+
+#else
+
+#undef bswap_32
+#undef bswap_64
+#include <byteswap.h>
+
+#endif
+
+#ifdef WORDS_BIGENDIAN
+#define FARMHASH_BIG_ENDIAN 1
+#endif
+
+#endif
+
+#ifdef FARMHASH_BIG_ENDIAN
+#define uint32_in_expected_order(x) (bswap_32(x))
+#define uint64_in_expected_order(x) (bswap_64(x))
+#else
+#define uint32_in_expected_order(x) (x)
+#define uint64_in_expected_order(x) (x)
+#endif
+
+namespace NAMESPACE_FOR_HASH_FUNCTIONS {
+
+STATIC_INLINE uint64_t Fetch64(const char *p) {
+  uint64_t result;
+  memcpy(&result, p, sizeof(result));
+  return uint64_in_expected_order(result);
+}
+
+STATIC_INLINE uint32_t Fetch32(const char *p) {
+  uint32_t result;
+  memcpy(&result, p, sizeof(result));
+  return uint32_in_expected_order(result);
+}
+
+STATIC_INLINE uint32_t Bswap32(uint32_t val) { return bswap_32(val); }
+STATIC_INLINE uint64_t Bswap64(uint64_t val) { return bswap_64(val); }
+
+// FARMHASH PORTABILITY LAYER: bitwise rot
+
+STATIC_INLINE uint32_t BasicRotate32(uint32_t val, int shift) {
+  // Avoid shifting by 32: doing so yields an undefined result.
+  return shift == 0 ? val : ((val >> shift) | (val << (32 - shift)));
+}
+
+STATIC_INLINE uint64_t BasicRotate64(uint64_t val, int shift) {
+  // Avoid shifting by 64: doing so yields an undefined result.
+  return shift == 0 ? val : ((val >> shift) | (val << (64 - shift)));
+}
+
+#if defined(_MSC_VER) && defined(FARMHASH_ROTR)
+
+STATIC_INLINE uint32_t Rotate32(uint32_t val, int shift) {
+  return sizeof(unsigned long) == sizeof(val) ?
+      _lrotr(val, shift) :
+      BasicRotate32(val, shift);
+}
+
+STATIC_INLINE uint64_t Rotate64(uint64_t val, int shift) {
+  return sizeof(unsigned long) == sizeof(val) ?
+      _lrotr(val, shift) :
+      BasicRotate64(val, shift);
+}
+
+#else
+
+STATIC_INLINE uint32_t Rotate32(uint32_t val, int shift) {
+  return BasicRotate32(val, shift);
+}
+STATIC_INLINE uint64_t Rotate64(uint64_t val, int shift) {
+  return BasicRotate64(val, shift);
+}
+
+#endif
+
+}  // namespace NAMESPACE_FOR_HASH_FUNCTIONS
+
+// FARMHASH PORTABILITY LAYER: debug mode or max speed?
+// One may use -DFARMHASH_DEBUG=1 or -DFARMHASH_DEBUG=0 to force the issue.
+
+#if !defined(FARMHASH_DEBUG) && (!defined(NDEBUG) || defined(_DEBUG))
+#define FARMHASH_DEBUG 1
+#endif
+
+#undef debug_mode
+#if FARMHASH_DEBUG
+#define debug_mode 1
+#else
+#define debug_mode 0
+#endif
+
+// PLATFORM-SPECIFIC FUNCTIONS AND MACROS
+
+#undef x86_64
+#if defined (__x86_64) || defined (__x86_64__)
+#define x86_64 1
+#else
+#define x86_64 0
+#endif
+
+#undef x86
+#if defined(__i386__) || defined(__i386) || defined(__X86__)
+#define x86 1
+#else
+#define x86 x86_64
+#endif
+
+#if !defined(is_64bit)
+#define is_64bit (x86_64 || (sizeof(void*) == 8))
+#endif
+
+#undef can_use_ssse3
+#if defined(__SSSE3__) || defined(FARMHASH_ASSUME_SSSE3)
+
+#include <immintrin.h>
+#define can_use_ssse3 1
+// Now we can use _mm_hsub_epi16 and so on.
+
+#else
+#define can_use_ssse3 0
+#endif
+
+#undef can_use_sse41
+#if defined(__SSE4_1__) || defined(FARMHASH_ASSUME_SSE41)
+
+#include <immintrin.h>
+#define can_use_sse41 1
+// Now we can use _mm_insert_epi64 and so on.
+
+#else
+#define can_use_sse41 0
+#endif
+
+#undef can_use_sse42
+#if defined(__SSE4_2__) || defined(FARMHASH_ASSUME_SSE42)
+
+#include <nmmintrin.h>
+#define can_use_sse42 1
+// Now we can use _mm_crc32_u{32,16,8}.  And on 64-bit platforms, _mm_crc32_u64.
+
+#else
+#define can_use_sse42 0
+#endif
+
+#undef can_use_aesni
+#if defined(__AES__) || defined(FARMHASH_ASSUME_AESNI)
+
+#include <wmmintrin.h>
+#define can_use_aesni 1
+// Now we can use _mm_aesimc_si128 and so on.
+
+#else
+#define can_use_aesni 0
+#endif
+
+#undef can_use_avx
+#if defined(__AVX__) || defined(FARMHASH_ASSUME_AVX)
+
+#include <immintrin.h>
+#define can_use_avx 1
+
+#else
+#define can_use_avx 0
+#endif
+
+#if can_use_ssse3 || can_use_sse41 || can_use_sse42 || can_use_aesni || can_use_avx
+STATIC_INLINE __m128i Fetch128(const char* s) {
+  return _mm_loadu_si128(reinterpret_cast<const __m128i*>(s));
+}
+#endif
+// Building blocks for hash functions
+
+// std::swap() was in <algorithm> but is in <utility> from C++11 on.
+#if !FARMHASH_CAN_USE_CXX11
+#include <algorithm>
+#endif
+
+#undef PERMUTE3
+#define PERMUTE3(a, b, c) do { std::swap(a, b); std::swap(a, c); } while (0)
+
+namespace NAMESPACE_FOR_HASH_FUNCTIONS {
+
+// Some primes between 2^63 and 2^64 for various uses.
+static const uint64_t k0 = 0xc3a5c85c97cb3127ULL;
+static const uint64_t k1 = 0xb492b66fbe98f273ULL;
+static const uint64_t k2 = 0x9ae16a3b2f90404fULL;
+
+// Magic numbers for 32-bit hashing.  Copied from Murmur3.
+static const uint32_t c1 = 0xcc9e2d51;
+static const uint32_t c2 = 0x1b873593;
+
+// A 32-bit to 32-bit integer hash copied from Murmur3.
+STATIC_INLINE uint32_t fmix(uint32_t h)
+{
+  h ^= h >> 16;
+  h *= 0x85ebca6b;
+  h ^= h >> 13;
+  h *= 0xc2b2ae35;
+  h ^= h >> 16;
+  return h;
+}
+
+STATIC_INLINE uint32_t Mur(uint32_t a, uint32_t h) {
+  // Helper from Murmur3 for combining two 32-bit values.
+  a *= c1;
+  a = Rotate32(a, 17);
+  a *= c2;
+  h ^= a;
+  h = Rotate32(h, 19);
+  return h * 5 + 0xe6546b64;
+}
+
+template <typename T> STATIC_INLINE T DebugTweak(T x) {
+  if (debug_mode) {
+    if (sizeof(x) == 4) {
+      x = ~Bswap32(x * c1);
+    } else {
+      x = ~Bswap64(x * k1);
+    }
+  }
+  return x;
+}
+
+template <> uint128_t DebugTweak(uint128_t x) {
+  if (debug_mode) {
+    uint64_t y = DebugTweak(Uint128Low64(x));
+    uint64_t z = DebugTweak(Uint128High64(x));
+    y += z;
+    z += y;
+    x = Uint128(y, z * k1);
+  }
+  return x;
+}
+
+}  // namespace NAMESPACE_FOR_HASH_FUNCTIONS
+
+using namespace std;
+using namespace NAMESPACE_FOR_HASH_FUNCTIONS;
+namespace farmhashna {
+#undef Fetch
+#define Fetch Fetch64
+
+#undef Rotate
+#define Rotate Rotate64
+
+#undef Bswap
+#define Bswap Bswap64
+
+STATIC_INLINE uint64_t ShiftMix(uint64_t val) {
+  return val ^ (val >> 47);
+}
+
+STATIC_INLINE uint64_t HashLen16(uint64_t u, uint64_t v) {
+  return Hash128to64(Uint128(u, v));
+}
+
+STATIC_INLINE uint64_t HashLen16(uint64_t u, uint64_t v, uint64_t mul) {
+  // Murmur-inspired hashing.
+  uint64_t a = (u ^ v) * mul;
+  a ^= (a >> 47);
+  uint64_t b = (v ^ a) * mul;
+  b ^= (b >> 47);
+  b *= mul;
+  return b;
+}
+
+STATIC_INLINE uint64_t HashLen0to16(const char *s, size_t len) {
+  if (len >= 8) {
+    uint64_t mul = k2 + len * 2;
+    uint64_t a = Fetch(s) + k2;
+    uint64_t b = Fetch(s + len - 8);
+    uint64_t c = Rotate(b, 37) * mul + a;
+    uint64_t d = (Rotate(a, 25) + b) * mul;
+    return HashLen16(c, d, mul);
+  }
+  if (len >= 4) {
+    uint64_t mul = k2 + len * 2;
+    uint64_t a = Fetch32(s);
+    return HashLen16(len + (a << 3), Fetch32(s + len - 4), mul);
+  }
+  if (len > 0) {
+    uint8_t a = s[0];
+    uint8_t b = s[len >> 1];
+    uint8_t c = s[len - 1];
+    uint32_t y = static_cast<uint32_t>(a) + (static_cast<uint32_t>(b) << 8);
+    uint32_t z = len + (static_cast<uint32_t>(c) << 2);
+    return ShiftMix(y * k2 ^ z * k0) * k2;
+  }
+  return k2;
+}
+
+// This probably works well for 16-byte strings as well, but it may be overkill
+// in that case.
+STATIC_INLINE uint64_t HashLen17to32(const char *s, size_t len) {
+  uint64_t mul = k2 + len * 2;
+  uint64_t a = Fetch(s) * k1;
+  uint64_t b = Fetch(s + 8);
+  uint64_t c = Fetch(s + len - 8) * mul;
+  uint64_t d = Fetch(s + len - 16) * k2;
+  return HashLen16(Rotate(a + b, 43) + Rotate(c, 30) + d,
+                   a + Rotate(b + k2, 18) + c, mul);
+}
+
+// Return a 16-byte hash for 48 bytes.  Quick and dirty.
+// Callers do best to use "random-looking" values for a and b.
+STATIC_INLINE pair<uint64_t, uint64_t> WeakHashLen32WithSeeds(
+    uint64_t w, uint64_t x, uint64_t y, uint64_t z, uint64_t a, uint64_t b) {
+  a += w;
+  b = Rotate(b + a + z, 21);
+  uint64_t c = a;
+  a += x;
+  a += y;
+  b += Rotate(a, 44);
+  return make_pair(a + z, b + c);
+}
+
+// Return a 16-byte hash for s[0] ... s[31], a, and b.  Quick and dirty.
+STATIC_INLINE pair<uint64_t, uint64_t> WeakHashLen32WithSeeds(
+    const char* s, uint64_t a, uint64_t b) {
+  return WeakHashLen32WithSeeds(Fetch(s),
+                                Fetch(s + 8),
+                                Fetch(s + 16),
+                                Fetch(s + 24),
+                                a,
+                                b);
+}
+
+// Return an 8-byte hash for 33 to 64 bytes.
+STATIC_INLINE uint64_t HashLen33to64(const char *s, size_t len) {
+  uint64_t mul = k2 + len * 2;
+  uint64_t a = Fetch(s) * k2;
+  uint64_t b = Fetch(s + 8);
+  uint64_t c = Fetch(s + len - 8) * mul;
+  uint64_t d = Fetch(s + len - 16) * k2;
+  uint64_t y = Rotate(a + b, 43) + Rotate(c, 30) + d;
+  uint64_t z = HashLen16(y, a + Rotate(b + k2, 18) + c, mul);
+  uint64_t e = Fetch(s + 16) * mul;
+  uint64_t f = Fetch(s + 24);
+  uint64_t g = (y + Fetch(s + len - 32)) * mul;
+  uint64_t h = (z + Fetch(s + len - 24)) * mul;
+  return HashLen16(Rotate(e + f, 43) + Rotate(g, 30) + h,
+                   e + Rotate(f + a, 18) + g, mul);
+}
+
+uint64_t Hash64(const char *s, size_t len) {
+  const uint64_t seed = 81;
+  if (len <= 32) {
+    if (len <= 16) {
+      return HashLen0to16(s, len);
+    } else {
+      return HashLen17to32(s, len);
+    }
+  } else if (len <= 64) {
+    return HashLen33to64(s, len);
+  }
+
+  // For strings over 64 bytes we loop.  Internal state consists of
+  // 56 bytes: v, w, x, y, and z.
+  uint64_t x = seed;
+  uint64_t y = seed * k1 + 113;
+  uint64_t z = ShiftMix(y * k2 + 113) * k2;
+  pair<uint64_t, uint64_t> v = make_pair(0, 0);
+  pair<uint64_t, uint64_t> w = make_pair(0, 0);
+  x = x * k2 + Fetch(s);
+
+  // Set end so that after the loop we have 1 to 64 bytes left to process.
+  const char* end = s + ((len - 1) / 64) * 64;
+  const char* last64 = end + ((len - 1) & 63) - 63;
+  assert(s + len - 64 == last64);
+  do {
+    x = Rotate(x + y + v.first + Fetch(s + 8), 37) * k1;
+    y = Rotate(y + v.second + Fetch(s + 48), 42) * k1;
+    x ^= w.second;
+    y += v.first + Fetch(s + 40);
+    z = Rotate(z + w.first, 33) * k1;
+    v = WeakHashLen32WithSeeds(s, v.second * k1, x + w.first);
+    w = WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch(s + 16));
+    std::swap(z, x);
+    s += 64;
+  } while (s != end);
+  uint64_t mul = k1 + ((z & 0xff) << 1);
+  // Make s point to the last 64 bytes of input.
+  s = last64;
+  w.first += ((len - 1) & 63);
+  v.first += w.first;
+  w.first += v.first;
+  x = Rotate(x + y + v.first + Fetch(s + 8), 37) * mul;
+  y = Rotate(y + v.second + Fetch(s + 48), 42) * mul;
+  x ^= w.second * 9;
+  y += v.first * 9 + Fetch(s + 40);
+  z = Rotate(z + w.first, 33) * mul;
+  v = WeakHashLen32WithSeeds(s, v.second * mul, x + w.first);
+  w = WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch(s + 16));
+  std::swap(z, x);
+  return HashLen16(HashLen16(v.first, w.first, mul) + ShiftMix(y) * k0 + z,
+                   HashLen16(v.second, w.second, mul) + x,
+                   mul);
+}
+
+uint64_t Hash64WithSeeds(const char *s, size_t len, uint64_t seed0, uint64_t seed1);

[jar (doing other things), 2015/07/28 06:17:51]

nit: 80 characters.

+
+uint64_t Hash64WithSeed(const char *s, size_t len, uint64_t seed) {
+  return Hash64WithSeeds(s, len, k2, seed);
+}
+
+uint64_t Hash64WithSeeds(const char *s, size_t len, uint64_t seed0, uint64_t seed1) {

[jar (doing other things), 2015/07/28 06:17:51]

nit: 80 characters.

If possible, please consider the Chromium style of one arg per line in a decl of
definition, when they don't all fit on a line.

+  return HashLen16(Hash64(s, len) - seed0, seed1);
+}
+}  // namespace farmhashna
+namespace farmhashuo {
+#undef Fetch
+#define Fetch Fetch64
+
+#undef Rotate
+#define Rotate Rotate64
+
+STATIC_INLINE uint64_t H(uint64_t x, uint64_t y, uint64_t mul, int r) {
+  uint64_t a = (x ^ y) * mul;
+  a ^= (a >> 47);
+  uint64_t b = (y ^ a) * mul;
+  return Rotate(b, r) * mul;
+}
+
+uint64_t Hash64WithSeeds(const char *s, size_t len,
+                         uint64_t seed0, uint64_t seed1) {
+  if (len <= 64) {
+    return farmhashna::Hash64WithSeeds(s, len, seed0, seed1);
+  }
+
+  // For strings over 64 bytes we loop.  Internal state consists of
+  // 64 bytes: u, v, w, x, y, and z.
+  uint64_t x = seed0;
+  uint64_t y = seed1 * k2 + 113;
+  uint64_t z = farmhashna::ShiftMix(y * k2) * k2;
+  pair<uint64_t, uint64_t> v = make_pair(seed0, seed1);
+  pair<uint64_t, uint64_t> w = make_pair(0, 0);
+  uint64_t u = x - z;
+  x *= k2;
+  uint64_t mul = k2 + (u & 0x82);
+
+  // Set end so that after the loop we have 1 to 64 bytes left to process.
+  const char* end = s + ((len - 1) / 64) * 64;
+  const char* last64 = end + ((len - 1) & 63) - 63;
+  assert(s + len - 64 == last64);
+  do {
+    uint64_t a0 = Fetch(s);
+    uint64_t a1 = Fetch(s + 8);
+    uint64_t a2 = Fetch(s + 16);
+    uint64_t a3 = Fetch(s + 24);
+    uint64_t a4 = Fetch(s + 32);
+    uint64_t a5 = Fetch(s + 40);
+    uint64_t a6 = Fetch(s + 48);
+    uint64_t a7 = Fetch(s + 56);
+    x += a0 + a1;
+    y += a2;
+    z += a3;
+    v.first += a4;
+    v.second += a5 + a1;
+    w.first += a6;
+    w.second += a7;
+
+    x = Rotate(x, 26);
+    x *= 9;
+    y = Rotate(y, 29);
+    z *= mul;
+    v.first = Rotate(v.first, 33);
+    v.second = Rotate(v.second, 30);
+    w.first ^= x;
+    w.first *= 9;
+    z = Rotate(z, 32);
+    z += w.second;
+    w.second += z;
+    z *= 9;
+    std::swap(u, y);
+
+    z += a0 + a6;
+    v.first += a2;
+    v.second += a3;
+    w.first += a4;
+    w.second += a5 + a6;
+    x += a1;
+    y += a7;
+
+    y += v.first;
+    v.first += x - y;
+    v.second += w.first;
+    w.first += v.second;
+    w.second += x - y;
+    x += w.second;
+    w.second = Rotate(w.second, 34);
+    std::swap(u, z);
+    s += 64;
+  } while (s != end);
+  // Make s point to the last 64 bytes of input.
+  s = last64;
+  u *= 9;
+  v.second = Rotate(v.second, 28);
+  v.first = Rotate(v.first, 20);
+  w.first += ((len - 1) & 63);
+  u += y;
+  y += u;
+  x = Rotate(y - x + v.first + Fetch(s + 8), 37) * mul;
+  y = Rotate(y ^ v.second ^ Fetch(s + 48), 42) * mul;
+  x ^= w.second * 9;
+  y += v.first + Fetch(s + 40);
+  z = Rotate(z + w.first, 33) * mul;
+  v = farmhashna::WeakHashLen32WithSeeds(s, v.second * mul, x + w.first);
+  w = farmhashna::WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch(s + 16));

[jar (doing other things), 2015/07/28 06:17:51]

nit: 80 characters

+  return H(farmhashna::HashLen16(v.first + x, w.first ^ y, mul) + z - u,
+           H(v.second + y, w.second + z, k2, 30) ^ x,
+           k2,
+           31);
+}
+
+uint64_t Hash64WithSeed(const char *s, size_t len, uint64_t seed) {
+  return len <= 64 ? farmhashna::Hash64WithSeed(s, len, seed) :
+      Hash64WithSeeds(s, len, 0, seed);
+}
+
+uint64_t Hash64(const char *s, size_t len) {
+  return len <= 64 ? farmhashna::Hash64(s, len) :
+      Hash64WithSeeds(s, len, 81, 0);
+}
+}  // namespace farmhashuo
+namespace farmhashxo {
+#undef Fetch
+#define Fetch Fetch64
+
+#undef Rotate
+#define Rotate Rotate64
+
+STATIC_INLINE uint64_t H32(const char *s, size_t len, uint64_t mul,
+                           uint64_t seed0 = 0, uint64_t seed1 = 0) {
+  uint64_t a = Fetch(s) * k1;
+  uint64_t b = Fetch(s + 8);
+  uint64_t c = Fetch(s + len - 8) * mul;
+  uint64_t d = Fetch(s + len - 16) * k2;
+  uint64_t u = Rotate(a + b, 43) + Rotate(c, 30) + d + seed0;
+  uint64_t v = a + Rotate(b + k2, 18) + c + seed1;
+  a = farmhashna::ShiftMix((u ^ v) * mul);
+  b = farmhashna::ShiftMix((v ^ a) * mul);
+  return b;
+}
+
+// Return an 8-byte hash for 33 to 64 bytes.
+STATIC_INLINE uint64_t HashLen33to64(const char *s, size_t len) {
+  uint64_t mul0 = k2 - 30;
+  uint64_t mul1 = k2 - 30 + 2 * len;
+  uint64_t h0 = H32(s, 32, mul0);
+  uint64_t h1 = H32(s + len - 32, 32, mul1);
+  return ((h1 * mul1) + h0) * mul1;
+}
+
+// Return an 8-byte hash for 65 to 96 bytes.
+STATIC_INLINE uint64_t HashLen65to96(const char *s, size_t len) {
+  uint64_t mul0 = k2 - 114;
+  uint64_t mul1 = k2 - 114 + 2 * len;
+  uint64_t h0 = H32(s, 32, mul0);
+  uint64_t h1 = H32(s + 32, 32, mul1);
+  uint64_t h2 = H32(s + len - 32, 32, mul1, h0, h1);
+  return (h2 * 9 + (h0 >> 17) + (h1 >> 21)) * mul1;
+}
+
+uint64_t Hash64(const char *s, size_t len) {
+  if (len <= 32) {
+    if (len <= 16) {
+      return farmhashna::HashLen0to16(s, len);
+    } else {
+      return farmhashna::HashLen17to32(s, len);
+    }
+  } else if (len <= 64) {
+    return HashLen33to64(s, len);
+  } else if (len <= 96) {
+    return HashLen65to96(s, len);
+  } else if (len <= 256) {
+    return farmhashna::Hash64(s, len);
+  } else {
+    return farmhashuo::Hash64(s, len);
+  }
+}
+
+uint64_t Hash64WithSeeds(const char *s, size_t len, uint64_t seed0, uint64_t seed1) {

[jar (doing other things), 2015/07/28 06:17:51]

nit: 80 chars

+  return farmhashuo::Hash64WithSeeds(s, len, seed0, seed1);
+}
+
+uint64_t Hash64WithSeed(const char *s, size_t len, uint64_t seed) {
+  return farmhashuo::Hash64WithSeed(s, len, seed);
+}
+}  // namespace farmhashxo
+namespace farmhashte {
+#if !can_use_sse41 || !x86_64
+
+uint64_t Hash64(const char *s, size_t len) {
+  FARMHASH_DIE_IF_MISCONFIGURED;
+  return s == NULL ? 0 : len;
+}
+
+uint64_t Hash64WithSeed(const char *s, size_t len, uint64_t seed) {
+  FARMHASH_DIE_IF_MISCONFIGURED;
+  return seed + Hash64(s, len);
+}
+
+uint64_t Hash64WithSeeds(const char *s, size_t len,
+                         uint64_t seed0, uint64_t seed1) {
+  FARMHASH_DIE_IF_MISCONFIGURED;
+  return seed0 + seed1 + Hash64(s, len);
+}
+
+#else
+
+#undef Fetch
+#define Fetch Fetch64
+
+#undef Rotate
+#define Rotate Rotate64
+
+#undef Bswap
+#define Bswap Bswap64
+
+// Helpers for data-parallel operations (1x 128 bits or 2x 64 or 4x 32).
+STATIC_INLINE __m128i Add(__m128i x, __m128i y) { return _mm_add_epi64(x, y); }
+STATIC_INLINE __m128i Xor(__m128i x, __m128i y) { return _mm_xor_si128(x, y); }
+STATIC_INLINE __m128i Mul(__m128i x, __m128i y) { return _mm_mullo_epi32(x, y); }

[jar (doing other things), 2015/07/28 06:17:51]

nit: 80 chars here and later in file.

+STATIC_INLINE __m128i Shuf(__m128i x, __m128i y) { return _mm_shuffle_epi8(y, x); }
+
+// Requires n >= 256.  Requires SSE4.1. Should be slightly faster if the
+// compiler uses AVX instructions (e.g., use the -mavx flag with GCC).
+STATIC_INLINE uint64_t Hash64Long(const char* s, size_t n,
+                                  uint64_t seed0, uint64_t seed1) {
+  const __m128i kShuf =
+      _mm_set_epi8(4, 11, 10, 5, 8, 15, 6, 9, 12, 2, 14, 13, 0, 7, 3, 1);
+  const __m128i kMult =
+      _mm_set_epi8(0xbd, 0xd6, 0x33, 0x39, 0x45, 0x54, 0xfa, 0x03,
+                   0x34, 0x3e, 0x33, 0xed, 0xcc, 0x9e, 0x2d, 0x51);
+  uint64_t seed2 = (seed0 + 113) * (seed1 + 9);
+  uint64_t seed3 = (Rotate(seed0, 23) + 27) * (Rotate(seed1, 30) + 111);
+  __m128i d0 = _mm_cvtsi64_si128(seed0);
+  __m128i d1 = _mm_cvtsi64_si128(seed1);
+  __m128i d2 = Shuf(kShuf, d0);
+  __m128i d3 = Shuf(kShuf, d1);
+  __m128i d4 = Xor(d0, d1);
+  __m128i d5 = Xor(d1, d2);
+  __m128i d6 = Xor(d2, d4);
+  __m128i d7 = _mm_set1_epi32(seed2 >> 32);
+  __m128i d8 = Mul(kMult, d2);
+  __m128i d9 = _mm_set1_epi32(seed3 >> 32);
+  __m128i d10 = _mm_set1_epi32(seed3);
+  __m128i d11 = Add(d2, _mm_set1_epi32(seed2));
+  const char* end = s + (n & ~static_cast<size_t>(255));
+  do {
+    __m128i z;
+    z = Fetch128(s);
+    d0 = Add(d0, z);
+    d1 = Shuf(kShuf, d1);
+    d2 = Xor(d2, d0);
+    d4 = Xor(d4, z);
+    d4 = Xor(d4, d1);
+    std::swap(d0, d6);
+    z = Fetch128(s + 16);
+    d5 = Add(d5, z);
+    d6 = Shuf(kShuf, d6);
+    d8 = Shuf(kShuf, d8);
+    d7 = Xor(d7, d5);
+    d0 = Xor(d0, z);
+    d0 = Xor(d0, d6);
+    std::swap(d5, d11);
+    z = Fetch128(s + 32);
+    d1 = Add(d1, z);
+    d2 = Shuf(kShuf, d2);
+    d4 = Shuf(kShuf, d4);
+    d5 = Xor(d5, z);
+    d5 = Xor(d5, d2);
+    std::swap(d10, d4);
+    z = Fetch128(s + 48);
+    d6 = Add(d6, z);
+    d7 = Shuf(kShuf, d7);
+    d0 = Shuf(kShuf, d0);
+    d8 = Xor(d8, d6);
+    d1 = Xor(d1, z);
+    d1 = Add(d1, d7);
+    z = Fetch128(s + 64);
+    d2 = Add(d2, z);
+    d5 = Shuf(kShuf, d5);
+    d4 = Add(d4, d2);
+    d6 = Xor(d6, z);
+    d6 = Xor(d6, d11);
+    std::swap(d8, d2);
+    z = Fetch128(s + 80);
+    d7 = Xor(d7, z);
+    d8 = Shuf(kShuf, d8);
+    d1 = Shuf(kShuf, d1);
+    d0 = Add(d0, d7);
+    d2 = Add(d2, z);
+    d2 = Add(d2, d8);
+    std::swap(d1, d7);
+    z = Fetch128(s + 96);
+    d4 = Shuf(kShuf, d4);
+    d6 = Shuf(kShuf, d6);
+    d8 = Mul(kMult, d8);
+    d5 = Xor(d5, d11);
+    d7 = Xor(d7, z);
+    d7 = Add(d7, d4);
+    std::swap(d6, d0);
+    z = Fetch128(s + 112);
+    d8 = Add(d8, z);
+    d0 = Shuf(kShuf, d0);
+    d2 = Shuf(kShuf, d2);
+    d1 = Xor(d1, d8);
+    d10 = Xor(d10, z);
+    d10 = Xor(d10, d0);
+    std::swap(d11, d5);
+    z = Fetch128(s + 128);
+    d4 = Add(d4, z);
+    d5 = Shuf(kShuf, d5);
+    d7 = Shuf(kShuf, d7);
+    d6 = Add(d6, d4);
+    d8 = Xor(d8, z);
+    d8 = Xor(d8, d5);
+    std::swap(d4, d10);
+    z = Fetch128(s + 144);
+    d0 = Add(d0, z);
+    d1 = Shuf(kShuf, d1);
+    d2 = Add(d2, d0);
+    d4 = Xor(d4, z);
+    d4 = Xor(d4, d1);
+    z = Fetch128(s + 160);
+    d5 = Add(d5, z);
+    d6 = Shuf(kShuf, d6);
+    d8 = Shuf(kShuf, d8);
+    d7 = Xor(d7, d5);
+    d0 = Xor(d0, z);
+    d0 = Xor(d0, d6);
+    std::swap(d2, d8);
+    z = Fetch128(s + 176);
+    d1 = Add(d1, z);
+    d2 = Shuf(kShuf, d2);
+    d4 = Shuf(kShuf, d4);
+    d5 = Mul(kMult, d5);
+    d5 = Xor(d5, z);
+    d5 = Xor(d5, d2);
+    std::swap(d7, d1);
+    z = Fetch128(s + 192);
+    d6 = Add(d6, z);
+    d7 = Shuf(kShuf, d7);
+    d0 = Shuf(kShuf, d0);
+    d8 = Add(d8, d6);
+    d1 = Xor(d1, z);
+    d1 = Xor(d1, d7);
+    std::swap(d0, d6);
+    z = Fetch128(s + 208);
+    d2 = Add(d2, z);
+    d5 = Shuf(kShuf, d5);
+    d4 = Xor(d4, d2);
+    d6 = Xor(d6, z);
+    d6 = Xor(d6, d9);
+    std::swap(d5, d11);
+    z = Fetch128(s + 224);
+    d7 = Add(d7, z);
+    d8 = Shuf(kShuf, d8);
+    d1 = Shuf(kShuf, d1);
+    d0 = Xor(d0, d7);
+    d2 = Xor(d2, z);
+    d2 = Xor(d2, d8);
+    std::swap(d10, d4);
+    z = Fetch128(s + 240);
+    d3 = Add(d3, z);
+    d4 = Shuf(kShuf, d4);
+    d6 = Shuf(kShuf, d6);
+    d7 = Mul(kMult, d7);
+    d5 = Add(d5, d3);
+    d7 = Xor(d7, z);
+    d7 = Xor(d7, d4);
+    std::swap(d3, d9);
+    s += 256;
+  } while (s != end);
+  d6 = Add(Mul(kMult, d6), _mm_cvtsi64_si128(n));
+  if (n % 256 != 0) {
+    d7 = Add(_mm_shuffle_epi32(d8, (0 << 6) + (3 << 4) + (2 << 2) + (1 << 0)), d7);
+    d8 = Add(Mul(kMult, d8), _mm_cvtsi64_si128(farmhashxo::Hash64(s, n % 256)));
+  }
+  __m128i t[8];
+  d0 = Mul(kMult, Shuf(kShuf, Mul(kMult, d0)));
+  d3 = Mul(kMult, Shuf(kShuf, Mul(kMult, d3)));
+  d9 = Mul(kMult, Shuf(kShuf, Mul(kMult, d9)));
+  d1 = Mul(kMult, Shuf(kShuf, Mul(kMult, d1)));
+  d0 = Add(d11, d0);
+  d3 = Xor(d7, d3);
+  d9 = Add(d8, d9);
+  d1 = Add(d10, d1);
+  d4 = Add(d3, d4);
+  d5 = Add(d9, d5);
+  d6 = Xor(d1, d6);
+  d2 = Add(d0, d2);
+  t[0] = d0;
+  t[1] = d3;
+  t[2] = d9;
+  t[3] = d1;
+  t[4] = d4;
+  t[5] = d5;
+  t[6] = d6;
+  t[7] = d2;
+  return farmhashxo::Hash64(reinterpret_cast<const char*>(t), sizeof(t));
+}
+
+uint64_t Hash64(const char *s, size_t len) {
+  // Empirically, farmhashxo seems faster until length 512.
+  return len >= 512 ? Hash64Long(s, len, k2, k1) : farmhashxo::Hash64(s, len);
+}
+
+uint64_t Hash64WithSeed(const char *s, size_t len, uint64_t seed) {
+  return len >= 512 ? Hash64Long(s, len, k1, seed) :
+      farmhashxo::Hash64WithSeed(s, len, seed);
+}
+
+uint64_t Hash64WithSeeds(const char *s, size_t len, uint64_t seed0, uint64_t seed1) {
+  return len >= 512 ? Hash64Long(s, len, seed0, seed1) :
+      farmhashxo::Hash64WithSeeds(s, len, seed0, seed1);
+}
+
+#endif
+}  // namespace farmhashte
+namespace farmhashnt {
+#if !can_use_sse41 || !x86_64
+
+uint32_t Hash32(const char *s, size_t len) {
+  FARMHASH_DIE_IF_MISCONFIGURED;
+  return s == NULL ? 0 : len;
+}
+
+uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
+  FARMHASH_DIE_IF_MISCONFIGURED;
+  return seed + Hash32(s, len);
+}
+
+#else
+
+uint32_t Hash32(const char *s, size_t len) {
+  return static_cast<uint32_t>(farmhashte::Hash64(s, len));
+}
+
+uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
+  return static_cast<uint32_t>(farmhashte::Hash64WithSeed(s, len, seed));
+}
+
+#endif
+}  // namespace farmhashnt
+namespace farmhashmk {
+#undef Fetch
+#define Fetch Fetch32
+
+#undef Rotate
+#define Rotate Rotate32
+
+#undef Bswap
+#define Bswap Bswap32
+
+STATIC_INLINE uint32_t Hash32Len13to24(const char *s, size_t len, uint32_t seed = 0) {
+  uint32_t a = Fetch(s - 4 + (len >> 1));
+  uint32_t b = Fetch(s + 4);
+  uint32_t c = Fetch(s + len - 8);
+  uint32_t d = Fetch(s + (len >> 1));
+  uint32_t e = Fetch(s);
+  uint32_t f = Fetch(s + len - 4);
+  uint32_t h = d * c1 + len + seed;
+  a = Rotate(a, 12) + f;
+  h = Mur(c, h) + a;
+  a = Rotate(a, 3) + c;
+  h = Mur(e, h) + a;
+  a = Rotate(a + f, 12) + d;
+  h = Mur(b ^ seed, h) + a;
+  return fmix(h);
+}
+
+STATIC_INLINE uint32_t Hash32Len0to4(const char *s, size_t len, uint32_t seed = 0) {
+  uint32_t b = seed;
+  uint32_t c = 9;
+  for (size_t i = 0; i < len; i++) {
+    signed char v = s[i];
+    b = b * c1 + v;
+    c ^= b;
+  }
+  return fmix(Mur(b, Mur(len, c)));
+}
+
+STATIC_INLINE uint32_t Hash32Len5to12(const char *s, size_t len, uint32_t seed = 0) {
+  uint32_t a = len, b = len * 5, c = 9, d = b + seed;
+  a += Fetch(s);
+  b += Fetch(s + len - 4);
+  c += Fetch(s + ((len >> 1) & 4));
+  return fmix(seed ^ Mur(c, Mur(b, Mur(a, d))));
+}
+
+uint32_t Hash32(const char *s, size_t len) {
+  if (len <= 24) {
+    return len <= 12 ?
+        (len <= 4 ? Hash32Len0to4(s, len) : Hash32Len5to12(s, len)) :
+        Hash32Len13to24(s, len);
+  }
+
+  // len > 24
+  uint32_t h = len, g = c1 * len, f = g;
+  uint32_t a0 = Rotate(Fetch(s + len - 4) * c1, 17) * c2;
+  uint32_t a1 = Rotate(Fetch(s + len - 8) * c1, 17) * c2;
+  uint32_t a2 = Rotate(Fetch(s + len - 16) * c1, 17) * c2;
+  uint32_t a3 = Rotate(Fetch(s + len - 12) * c1, 17) * c2;
+  uint32_t a4 = Rotate(Fetch(s + len - 20) * c1, 17) * c2;
+  h ^= a0;
+  h = Rotate(h, 19);
+  h = h * 5 + 0xe6546b64;
+  h ^= a2;
+  h = Rotate(h, 19);
+  h = h * 5 + 0xe6546b64;
+  g ^= a1;
+  g = Rotate(g, 19);
+  g = g * 5 + 0xe6546b64;
+  g ^= a3;
+  g = Rotate(g, 19);
+  g = g * 5 + 0xe6546b64;
+  f += a4;
+  f = Rotate(f, 19) + 113;
+  size_t iters = (len - 1) / 20;
+  do {
+    uint32_t a = Fetch(s);
+    uint32_t b = Fetch(s + 4);
+    uint32_t c = Fetch(s + 8);
+    uint32_t d = Fetch(s + 12);
+    uint32_t e = Fetch(s + 16);
+    h += a;
+    g += b;
+    f += c;
+    h = Mur(d, h) + e;
+    g = Mur(c, g) + a;
+    f = Mur(b + e * c1, f) + d;
+    f += g;
+    g += f;
+    s += 20;
+  } while (--iters != 0);
+  g = Rotate(g, 11) * c1;
+  g = Rotate(g, 17) * c1;
+  f = Rotate(f, 11) * c1;
+  f = Rotate(f, 17) * c1;
+  h = Rotate(h + g, 19);
+  h = h * 5 + 0xe6546b64;
+  h = Rotate(h, 17) * c1;
+  h = Rotate(h + f, 19);
+  h = h * 5 + 0xe6546b64;
+  h = Rotate(h, 17) * c1;
+  return h;
+}
+
+uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
+  if (len <= 24) {
+    if (len >= 13) return Hash32Len13to24(s, len, seed * c1);
+    else if (len >= 5) return Hash32Len5to12(s, len, seed);
+    else return Hash32Len0to4(s, len, seed);
+  }
+  uint32_t h = Hash32Len13to24(s, 24, seed ^ len);
+  return Mur(Hash32(s + 24, len - 24) + seed, h);
+}
+}  // namespace farmhashmk
+namespace farmhashsu {
+#if !can_use_sse42 || !can_use_aesni
+
+uint32_t Hash32(const char *s, size_t len) {
+  FARMHASH_DIE_IF_MISCONFIGURED;
+  return s == NULL ? 0 : len;
+}
+
+uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
+  FARMHASH_DIE_IF_MISCONFIGURED;
+  return seed + Hash32(s, len);
+}
+
+#else
+
+#undef Fetch
+#define Fetch Fetch32
+
+#undef Rotate
+#define Rotate Rotate32
+
+#undef Bswap
+#define Bswap Bswap32
+
+// Helpers for data-parallel operations (4x 32-bits).
+STATIC_INLINE __m128i Add(__m128i x, __m128i y) { return _mm_add_epi32(x, y); }
+STATIC_INLINE __m128i Xor(__m128i x, __m128i y) { return _mm_xor_si128(x, y); }
+STATIC_INLINE __m128i Or(__m128i x, __m128i y) { return _mm_or_si128(x, y); }
+STATIC_INLINE __m128i Mul(__m128i x, __m128i y) { return _mm_mullo_epi32(x, y); }
+STATIC_INLINE __m128i Mul5(__m128i x) { return Add(x, _mm_slli_epi32(x, 2)); }
+STATIC_INLINE __m128i RotateLeft(__m128i x, int c) {
+  return Or(_mm_slli_epi32(x, c),
+            _mm_srli_epi32(x, 32 - c));
+}
+STATIC_INLINE __m128i Rol17(__m128i x) { return RotateLeft(x, 17); }
+STATIC_INLINE __m128i Rol19(__m128i x) { return RotateLeft(x, 19); }
+STATIC_INLINE __m128i Shuffle0321(__m128i x) {
+  return _mm_shuffle_epi32(x, (0 << 6) + (3 << 4) + (2 << 2) + (1 << 0));
+}
+
+uint32_t Hash32(const char *s, size_t len) {
+  const uint32_t seed = 81;
+  if (len <= 24) {
+    return len <= 12 ?
+        (len <= 4 ?
+         farmhashmk::Hash32Len0to4(s, len) :
+         farmhashmk::Hash32Len5to12(s, len)) :
+        farmhashmk::Hash32Len13to24(s, len);
+  }
+
+  if (len < 40) {
+    uint32_t a = len, b = seed * c2, c = a + b;
+    a += Fetch(s + len - 4);
+    b += Fetch(s + len - 20);
+    c += Fetch(s + len - 16);
+    uint32_t d = a;
+    a = NAMESPACE_FOR_HASH_FUNCTIONS::Rotate32(a, 21);
+    a = Mur(a, Mur(b, _mm_crc32_u32(c, d)));
+    a += Fetch(s + len - 12);
+    b += Fetch(s + len - 8);
+    d += a;
+    a += d;
+    b = Mur(b, d) * c2;
+    a = _mm_crc32_u32(a, b + c);
+    return farmhashmk::Hash32Len13to24(s, (len + 1) / 2, a) + b;
+  }
+
+#undef Mulc1
+#define Mulc1(x) Mul((x), cc1)
+
+#undef Mulc2
+#define Mulc2(x) Mul((x), cc2)
+
+#undef Murk
+#define Murk(a, h)                              \
+  Add(k,                                        \
+      Mul5(                                     \
+          Rol19(                                \
+              Xor(                              \
+                  Mulc2(                        \
+                      Rol17(                    \
+                          Mulc1(a))),           \
+                  (h)))))
+
+  const __m128i cc1 = _mm_set1_epi32(c1);
+  const __m128i cc2 = _mm_set1_epi32(c2);
+  __m128i h = _mm_set1_epi32(seed);
+  __m128i g = _mm_set1_epi32(c1 * seed);
+  __m128i f = g;
+  __m128i k = _mm_set1_epi32(0xe6546b64);
+  __m128i q;
+  if (len < 80) {
+    __m128i a = Fetch128(s);
+    __m128i b = Fetch128(s + 16);
+    __m128i c = Fetch128(s + (len - 15) / 2);
+    __m128i d = Fetch128(s + len - 32);
+    __m128i e = Fetch128(s + len - 16);
+    h = Add(h, a);
+    g = Add(g, b);
+    q = g;
+    g = Shuffle0321(g);
+    f = Add(f, c);
+    __m128i be = Add(b, Mulc1(e));
+    h = Add(h, f);
+    f = Add(f, h);
+    h = Add(Murk(d, h), e);
+    k = Xor(k, _mm_shuffle_epi8(g, f));
+    g = Add(Xor(c, g), a);
+    f = Add(Xor(be, f), d);
+    k = Add(k, be);
+    k = Add(k, _mm_shuffle_epi8(f, h));
+    f = Add(f, g);
+    g = Add(g, f);
+    g = Add(_mm_set1_epi32(len), Mulc1(g));
+  } else {
+    // len >= 80
+    // The following is loosely modelled after farmhashmk::Hash32.
+    size_t iters = (len - 1) / 80;
+    len -= iters * 80;
+
+#undef Chunk
+#define Chunk() do {                            \
+  __m128i a = Fetch128(s);                      \
+  __m128i b = Fetch128(s + 16);                 \
+  __m128i c = Fetch128(s + 32);                 \
+  __m128i d = Fetch128(s + 48);                 \
+  __m128i e = Fetch128(s + 64);                 \
+  h = Add(h, a);                                \
+  g = Add(g, b);                                \
+  g = Shuffle0321(g);                           \
+  f = Add(f, c);                                \
+  __m128i be = Add(b, Mulc1(e));                \
+  h = Add(h, f);                                \
+  f = Add(f, h);                                \
+  h = Add(h, d);                                \
+  q = Add(q, e);                                \
+  h = Rol17(h);                                 \
+  h = Mulc1(h);                                 \
+  k = Xor(k, _mm_shuffle_epi8(g, f));           \
+  g = Add(Xor(c, g), a);                        \
+  f = Add(Xor(be, f), d);                       \
+  std::swap(f, q);                              \
+  q = _mm_aesimc_si128(q);                      \
+  k = Add(k, be);                               \
+  k = Add(k, _mm_shuffle_epi8(f, h));           \
+  f = Add(f, g);                                \
+  g = Add(g, f);                                \
+  f = Mulc1(f);                                 \
+} while (0)
+
+    q = g;
+    while (iters-- != 0) {
+      Chunk();
+      s += 80;
+    }
+
+    if (len != 0) {
+      h = Add(h, _mm_set1_epi32(len));
+      s = s + len - 80;
+      Chunk();
+    }
+  }
+
+  g = Shuffle0321(g);
+  k = Xor(k, g);
+  k = Xor(k, q);
+  h = Xor(h, q);
+  f = Mulc1(f);
+  k = Mulc2(k);
+  g = Mulc1(g);
+  h = Mulc2(h);
+  k = Add(k, _mm_shuffle_epi8(g, f));
+  h = Add(h, f);
+  f = Add(f, h);
+  g = Add(g, k);
+  k = Add(k, g);
+  k = Xor(k, _mm_shuffle_epi8(f, h));
+  __m128i buf[4];
+  buf[0] = f;
+  buf[1] = g;
+  buf[2] = k;
+  buf[3] = h;
+  s = reinterpret_cast<char*>(buf);
+  uint32_t x = Fetch(s);
+  uint32_t y = Fetch(s+4);
+  uint32_t z = Fetch(s+8);
+  x = _mm_crc32_u32(x, Fetch(s+12));
+  y = _mm_crc32_u32(y, Fetch(s+16));
+  z = _mm_crc32_u32(z * c1, Fetch(s+20));
+  x = _mm_crc32_u32(x, Fetch(s+24));
+  y = _mm_crc32_u32(y * c1, Fetch(s+28));
+  uint32_t o = y;
+  z = _mm_crc32_u32(z, Fetch(s+32));
+  x = _mm_crc32_u32(x * c1, Fetch(s+36));
+  y = _mm_crc32_u32(y, Fetch(s+40));
+  z = _mm_crc32_u32(z * c1, Fetch(s+44));
+  x = _mm_crc32_u32(x, Fetch(s+48));
+  y = _mm_crc32_u32(y * c1, Fetch(s+52));
+  z = _mm_crc32_u32(z, Fetch(s+56));
+  x = _mm_crc32_u32(x, Fetch(s+60));
+  return (o - x + y - z) * c1;
+}
+
+#undef Chunk
+#undef Murk
+#undef Mulc2
+#undef Mulc1
+
+uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
+  if (len <= 24) {
+    if (len >= 13) return farmhashmk::Hash32Len13to24(s, len, seed * c1);
+    else if (len >= 5) return farmhashmk::Hash32Len5to12(s, len, seed);
+    else return farmhashmk::Hash32Len0to4(s, len, seed);
+  }
+  uint32_t h = farmhashmk::Hash32Len13to24(s, 24, seed ^ len);
+  return _mm_crc32_u32(Hash32(s + 24, len - 24) + seed, h);
+}
+
+#endif
+}  // namespace farmhashsu
+namespace farmhashsa {
+#if !can_use_sse42
+
+uint32_t Hash32(const char *s, size_t len) {
+  FARMHASH_DIE_IF_MISCONFIGURED;
+  return s == NULL ? 0 : len;
+}
+
+uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
+  FARMHASH_DIE_IF_MISCONFIGURED;
+  return seed + Hash32(s, len);
+}
+
+#else
+
+#undef Fetch
+#define Fetch Fetch32
+
+#undef Rotate
+#define Rotate Rotate32
+
+#undef Bswap
+#define Bswap Bswap32
+
+// Helpers for data-parallel operations (4x 32-bits).
+STATIC_INLINE __m128i Add(__m128i x, __m128i y) { return _mm_add_epi32(x, y); }
+STATIC_INLINE __m128i Xor(__m128i x, __m128i y) { return _mm_xor_si128(x, y); }
+STATIC_INLINE __m128i Or(__m128i x, __m128i y) { return _mm_or_si128(x, y); }
+STATIC_INLINE __m128i Mul(__m128i x, __m128i y) { return _mm_mullo_epi32(x, y); }
+STATIC_INLINE __m128i Mul5(__m128i x) { return Add(x, _mm_slli_epi32(x, 2)); }
+STATIC_INLINE __m128i Rotate(__m128i x, int c) {
+  return Or(_mm_slli_epi32(x, c),
+            _mm_srli_epi32(x, 32 - c));
+}
+STATIC_INLINE __m128i Rot17(__m128i x) { return Rotate(x, 17); }
+STATIC_INLINE __m128i Rot19(__m128i x) { return Rotate(x, 19); }
+STATIC_INLINE __m128i Shuffle0321(__m128i x) {
+  return _mm_shuffle_epi32(x, (0 << 6) + (3 << 4) + (2 << 2) + (1 << 0));
+}
+
+uint32_t Hash32(const char *s, size_t len) {
+  const uint32_t seed = 81;
+  if (len <= 24) {
+    return len <= 12 ?
+        (len <= 4 ?
+         farmhashmk::Hash32Len0to4(s, len) :
+         farmhashmk::Hash32Len5to12(s, len)) :
+        farmhashmk::Hash32Len13to24(s, len);
+  }
+
+  if (len < 40) {
+    uint32_t a = len, b = seed * c2, c = a + b;
+    a += Fetch(s + len - 4);
+    b += Fetch(s + len - 20);
+    c += Fetch(s + len - 16);
+    uint32_t d = a;
+    a = NAMESPACE_FOR_HASH_FUNCTIONS::Rotate32(a, 21);
+    a = Mur(a, Mur(b, Mur(c, d)));
+    a += Fetch(s + len - 12);
+    b += Fetch(s + len - 8);
+    d += a;
+    a += d;
+    b = Mur(b, d) * c2;
+    a = _mm_crc32_u32(a, b + c);
+    return farmhashmk::Hash32Len13to24(s, (len + 1) / 2, a) + b;
+  }
+
+#undef Mulc1
+#define Mulc1(x) Mul((x), cc1)
+
+#undef Mulc2
+#define Mulc2(x) Mul((x), cc2)
+
+#undef Murk
+#define Murk(a, h)                              \
+  Add(k,                                        \
+      Mul5(                                     \
+          Rot19(                                \
+              Xor(                              \
+                  Mulc2(                        \
+                      Rot17(                    \
+                          Mulc1(a))),           \
+                  (h)))))
+
+  const __m128i cc1 = _mm_set1_epi32(c1);
+  const __m128i cc2 = _mm_set1_epi32(c2);
+  __m128i h = _mm_set1_epi32(seed);
+  __m128i g = _mm_set1_epi32(c1 * seed);
+  __m128i f = g;
+  __m128i k = _mm_set1_epi32(0xe6546b64);
+  if (len < 80) {
+    __m128i a = Fetch128(s);
+    __m128i b = Fetch128(s + 16);
+    __m128i c = Fetch128(s + (len - 15) / 2);
+    __m128i d = Fetch128(s + len - 32);
+    __m128i e = Fetch128(s + len - 16);
+    h = Add(h, a);
+    g = Add(g, b);
+    g = Shuffle0321(g);
+    f = Add(f, c);
+    __m128i be = Add(b, Mulc1(e));
+    h = Add(h, f);
+    f = Add(f, h);
+    h = Add(Murk(d, h), e);
+    k = Xor(k, _mm_shuffle_epi8(g, f));
+    g = Add(Xor(c, g), a);
+    f = Add(Xor(be, f), d);
+    k = Add(k, be);
+    k = Add(k, _mm_shuffle_epi8(f, h));
+    f = Add(f, g);
+    g = Add(g, f);
+    g = Add(_mm_set1_epi32(len), Mulc1(g));
+  } else {
+    // len >= 80
+    // The following is loosely modelled after farmhashmk::Hash32.
+    size_t iters = (len - 1) / 80;
+    len -= iters * 80;
+
+#undef Chunk
+#define Chunk() do {                            \
+  __m128i a = Fetch128(s);                       \
+  __m128i b = Fetch128(s + 16);                  \
+  __m128i c = Fetch128(s + 32);                  \
+  __m128i d = Fetch128(s + 48);                  \
+  __m128i e = Fetch128(s + 64);                  \
+  h = Add(h, a);                                \
+  g = Add(g, b);                                \
+  g = Shuffle0321(g);                           \
+  f = Add(f, c);                                \
+  __m128i be = Add(b, Mulc1(e));                \
+  h = Add(h, f);                                \
+  f = Add(f, h);                                \
+  h = Add(Murk(d, h), e);                       \
+  k = Xor(k, _mm_shuffle_epi8(g, f));           \
+  g = Add(Xor(c, g), a);                        \
+  f = Add(Xor(be, f), d);                       \
+  k = Add(k, be);                               \
+  k = Add(k, _mm_shuffle_epi8(f, h));           \
+  f = Add(f, g);                                \
+  g = Add(g, f);                                \
+  f = Mulc1(f);                                 \
+} while (0)
+
+    while (iters-- != 0) {
+      Chunk();
+      s += 80;
+    }
+
+    if (len != 0) {
+      h = Add(h, _mm_set1_epi32(len));
+      s = s + len - 80;
+      Chunk();
+    }
+  }
+
+  g = Shuffle0321(g);
+  k = Xor(k, g);
+  f = Mulc1(f);
+  k = Mulc2(k);
+  g = Mulc1(g);
+  h = Mulc2(h);
+  k = Add(k, _mm_shuffle_epi8(g, f));
+  h = Add(h, f);
+  f = Add(f, h);
+  g = Add(g, k);
+  k = Add(k, g);
+  k = Xor(k, _mm_shuffle_epi8(f, h));
+  __m128i buf[4];
+  buf[0] = f;
+  buf[1] = g;
+  buf[2] = k;
+  buf[3] = h;
+  s = reinterpret_cast<char*>(buf);
+  uint32_t x = Fetch(s);
+  uint32_t y = Fetch(s+4);
+  uint32_t z = Fetch(s+8);
+  x = _mm_crc32_u32(x, Fetch(s+12));
+  y = _mm_crc32_u32(y, Fetch(s+16));
+  z = _mm_crc32_u32(z * c1, Fetch(s+20));
+  x = _mm_crc32_u32(x, Fetch(s+24));
+  y = _mm_crc32_u32(y * c1, Fetch(s+28));
+  uint32_t o = y;
+  z = _mm_crc32_u32(z, Fetch(s+32));
+  x = _mm_crc32_u32(x * c1, Fetch(s+36));
+  y = _mm_crc32_u32(y, Fetch(s+40));
+  z = _mm_crc32_u32(z * c1, Fetch(s+44));
+  x = _mm_crc32_u32(x, Fetch(s+48));
+  y = _mm_crc32_u32(y * c1, Fetch(s+52));
+  z = _mm_crc32_u32(z, Fetch(s+56));
+  x = _mm_crc32_u32(x, Fetch(s+60));
+  return (o - x + y - z) * c1;
+}
+
+#undef Chunk
+#undef Murk
+#undef Mulc2
+#undef Mulc1
+
+uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
+  if (len <= 24) {
+    if (len >= 13) return farmhashmk::Hash32Len13to24(s, len, seed * c1);
+    else if (len >= 5) return farmhashmk::Hash32Len5to12(s, len, seed);
+    else return farmhashmk::Hash32Len0to4(s, len, seed);
+  }
+  uint32_t h = farmhashmk::Hash32Len13to24(s, 24, seed ^ len);
+  return _mm_crc32_u32(Hash32(s + 24, len - 24) + seed, h);
+}
+
+#endif
+}  // namespace farmhashsa
+namespace farmhashcc {
+// This file provides a 32-bit hash equivalent to CityHash32 (v1.1.1)
+// and a 128-bit hash equivalent to CityHash128 (v1.1.1).  It also provides
+// a seeded 32-bit hash function similar to CityHash32.
+
+#undef Fetch
+#define Fetch Fetch32
+
+#undef Rotate
+#define Rotate Rotate32
+
+#undef Bswap
+#define Bswap Bswap32
+
+STATIC_INLINE uint32_t Hash32Len13to24(const char *s, size_t len) {
+  uint32_t a = Fetch(s - 4 + (len >> 1));
+  uint32_t b = Fetch(s + 4);
+  uint32_t c = Fetch(s + len - 8);
+  uint32_t d = Fetch(s + (len >> 1));
+  uint32_t e = Fetch(s);
+  uint32_t f = Fetch(s + len - 4);
+  uint32_t h = len;
+
+  return fmix(Mur(f, Mur(e, Mur(d, Mur(c, Mur(b, Mur(a, h)))))));
+}
+
+STATIC_INLINE uint32_t Hash32Len0to4(const char *s, size_t len) {
+  uint32_t b = 0;
+  uint32_t c = 9;
+  for (size_t i = 0; i < len; i++) {
+    signed char v = s[i];
+    b = b * c1 + v;
+    c ^= b;
+  }
+  return fmix(Mur(b, Mur(len, c)));
+}
+
+STATIC_INLINE uint32_t Hash32Len5to12(const char *s, size_t len) {
+  uint32_t a = len, b = len * 5, c = 9, d = b;
+  a += Fetch(s);
+  b += Fetch(s + len - 4);
+  c += Fetch(s + ((len >> 1) & 4));
+  return fmix(Mur(c, Mur(b, Mur(a, d))));
+}
+
+uint32_t Hash32(const char *s, size_t len) {
+  if (len <= 24) {
+    return len <= 12 ?
+        (len <= 4 ? Hash32Len0to4(s, len) : Hash32Len5to12(s, len)) :
+        Hash32Len13to24(s, len);
+  }
+
+  // len > 24
+  uint32_t h = len, g = c1 * len, f = g;
+  uint32_t a0 = Rotate(Fetch(s + len - 4) * c1, 17) * c2;
+  uint32_t a1 = Rotate(Fetch(s + len - 8) * c1, 17) * c2;
+  uint32_t a2 = Rotate(Fetch(s + len - 16) * c1, 17) * c2;
+  uint32_t a3 = Rotate(Fetch(s + len - 12) * c1, 17) * c2;
+  uint32_t a4 = Rotate(Fetch(s + len - 20) * c1, 17) * c2;
+  h ^= a0;
+  h = Rotate(h, 19);
+  h = h * 5 + 0xe6546b64;
+  h ^= a2;
+  h = Rotate(h, 19);
+  h = h * 5 + 0xe6546b64;
+  g ^= a1;
+  g = Rotate(g, 19);
+  g = g * 5 + 0xe6546b64;
+  g ^= a3;
+  g = Rotate(g, 19);
+  g = g * 5 + 0xe6546b64;
+  f += a4;
+  f = Rotate(f, 19);
+  f = f * 5 + 0xe6546b64;
+  size_t iters = (len - 1) / 20;
+  do {
+    uint32_t a0 = Rotate(Fetch(s) * c1, 17) * c2;
+    uint32_t a1 = Fetch(s + 4);
+    uint32_t a2 = Rotate(Fetch(s + 8) * c1, 17) * c2;
+    uint32_t a3 = Rotate(Fetch(s + 12) * c1, 17) * c2;
+    uint32_t a4 = Fetch(s + 16);
+    h ^= a0;
+    h = Rotate(h, 18);
+    h = h * 5 + 0xe6546b64;
+    f += a1;
+    f = Rotate(f, 19);
+    f = f * c1;
+    g += a2;
+    g = Rotate(g, 18);
+    g = g * 5 + 0xe6546b64;
+    h ^= a3 + a1;
+    h = Rotate(h, 19);
+    h = h * 5 + 0xe6546b64;
+    g ^= a4;
+    g = Bswap(g) * 5;
+    h += a4 * 5;
+    h = Bswap(h);
+    f += a0;
+    PERMUTE3(f, h, g);
+    s += 20;
+  } while (--iters != 0);
+  g = Rotate(g, 11) * c1;
+  g = Rotate(g, 17) * c1;
+  f = Rotate(f, 11) * c1;
+  f = Rotate(f, 17) * c1;
+  h = Rotate(h + g, 19);
+  h = h * 5 + 0xe6546b64;
+  h = Rotate(h, 17) * c1;
+  h = Rotate(h + f, 19);
+  h = h * 5 + 0xe6546b64;
+  h = Rotate(h, 17) * c1;
+  return h;
+}
+
+uint32_t Hash32WithSeed(const char *s, size_t len, uint32_t seed) {
+  if (len <= 24) {
+    if (len >= 13) return farmhashmk::Hash32Len13to24(s, len, seed * c1);
+    else if (len >= 5) return farmhashmk::Hash32Len5to12(s, len, seed);
+    else return farmhashmk::Hash32Len0to4(s, len, seed);
+  }
+  uint32_t h = farmhashmk::Hash32Len13to24(s, 24, seed ^ len);
+  return Mur(Hash32(s + 24, len - 24) + seed, h);
+}
+
+#undef Fetch
+#define Fetch Fetch64
+
+#undef Rotate
+#define Rotate Rotate64
+
+#undef Bswap
+#define Bswap Bswap64
+
+STATIC_INLINE uint64_t ShiftMix(uint64_t val) {
+  return val ^ (val >> 47);
+}
+
+STATIC_INLINE uint64_t HashLen16(uint64_t u, uint64_t v) {
+  return Hash128to64(Uint128(u, v));
+}
+
+STATIC_INLINE uint64_t HashLen16(uint64_t u, uint64_t v, uint64_t mul) {
+  // Murmur-inspired hashing.
+  uint64_t a = (u ^ v) * mul;
+  a ^= (a >> 47);
+  uint64_t b = (v ^ a) * mul;
+  b ^= (b >> 47);
+  b *= mul;
+  return b;
+}
+
+STATIC_INLINE uint64_t HashLen0to16(const char *s, size_t len) {
+  if (len >= 8) {
+    uint64_t mul = k2 + len * 2;
+    uint64_t a = Fetch(s) + k2;
+    uint64_t b = Fetch(s + len - 8);
+    uint64_t c = Rotate(b, 37) * mul + a;
+    uint64_t d = (Rotate(a, 25) + b) * mul;
+    return HashLen16(c, d, mul);
+  }
+  if (len >= 4) {
+    uint64_t mul = k2 + len * 2;
+    uint64_t a = Fetch32(s);
+    return HashLen16(len + (a << 3), Fetch32(s + len - 4), mul);
+  }
+  if (len > 0) {
+    uint8_t a = s[0];
+    uint8_t b = s[len >> 1];
+    uint8_t c = s[len - 1];
+    uint32_t y = static_cast<uint32_t>(a) + (static_cast<uint32_t>(b) << 8);
+    uint32_t z = len + (static_cast<uint32_t>(c) << 2);
+    return ShiftMix(y * k2 ^ z * k0) * k2;
+  }
+  return k2;
+}
+
+// Return a 16-byte hash for 48 bytes.  Quick and dirty.
+// Callers do best to use "random-looking" values for a and b.
+STATIC_INLINE pair<uint64_t, uint64_t> WeakHashLen32WithSeeds(
+    uint64_t w, uint64_t x, uint64_t y, uint64_t z, uint64_t a, uint64_t b) {
+  a += w;
+  b = Rotate(b + a + z, 21);
+  uint64_t c = a;
+  a += x;
+  a += y;
+  b += Rotate(a, 44);
+  return make_pair(a + z, b + c);
+}
+
+// Return a 16-byte hash for s[0] ... s[31], a, and b.  Quick and dirty.
+STATIC_INLINE pair<uint64_t, uint64_t> WeakHashLen32WithSeeds(
+    const char* s, uint64_t a, uint64_t b) {
+  return WeakHashLen32WithSeeds(Fetch(s),
+                                Fetch(s + 8),
+                                Fetch(s + 16),
+                                Fetch(s + 24),
+                                a,
+                                b);
+}
+
+
+
+// A subroutine for CityHash128().  Returns a decent 128-bit hash for strings
+// of any length representable in signed long.  Based on City and Murmur.
+STATIC_INLINE uint128_t CityMurmur(const char *s, size_t len, uint128_t seed) {
+  uint64_t a = Uint128Low64(seed);
+  uint64_t b = Uint128High64(seed);
+  uint64_t c = 0;
+  uint64_t d = 0;
+  signed long l = len - 16;
+  if (l <= 0) {  // len <= 16
+    a = ShiftMix(a * k1) * k1;
+    c = b * k1 + HashLen0to16(s, len);
+    d = ShiftMix(a + (len >= 8 ? Fetch(s) : c));
+  } else {  // len > 16
+    c = HashLen16(Fetch(s + len - 8) + k1, a);
+    d = HashLen16(b + len, c + Fetch(s + len - 16));
+    a += d;
+    do {
+      a ^= ShiftMix(Fetch(s) * k1) * k1;
+      a *= k1;
+      b ^= a;
+      c ^= ShiftMix(Fetch(s + 8) * k1) * k1;
+      c *= k1;
+      d ^= c;
+      s += 16;
+      l -= 16;
+    } while (l > 0);
+  }
+  a = HashLen16(a, c);
+  b = HashLen16(d, b);
+  return uint128_t(a ^ b, HashLen16(b, a));
+}
+
+uint128_t CityHash128WithSeed(const char *s, size_t len, uint128_t seed) {
+  if (len < 128) {
+    return CityMurmur(s, len, seed);
+  }
+
+  // We expect len >= 128 to be the common case.  Keep 56 bytes of state:
+  // v, w, x, y, and z.
+  pair<uint64_t, uint64_t> v, w;
+  uint64_t x = Uint128Low64(seed);
+  uint64_t y = Uint128High64(seed);
+  uint64_t z = len * k1;
+  v.first = Rotate(y ^ k1, 49) * k1 + Fetch(s);
+  v.second = Rotate(v.first, 42) * k1 + Fetch(s + 8);
+  w.first = Rotate(y + z, 35) * k1 + x;
+  w.second = Rotate(x + Fetch(s + 88), 53) * k1;
+
+  // This is the same inner loop as CityHash64(), manually unrolled.
+  do {
+    x = Rotate(x + y + v.first + Fetch(s + 8), 37) * k1;
+    y = Rotate(y + v.second + Fetch(s + 48), 42) * k1;
+    x ^= w.second;
+    y += v.first + Fetch(s + 40);
+    z = Rotate(z + w.first, 33) * k1;
+    v = WeakHashLen32WithSeeds(s, v.second * k1, x + w.first);
+    w = WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch(s + 16));
+    std::swap(z, x);
+    s += 64;
+    x = Rotate(x + y + v.first + Fetch(s + 8), 37) * k1;
+    y = Rotate(y + v.second + Fetch(s + 48), 42) * k1;
+    x ^= w.second;
+    y += v.first + Fetch(s + 40);
+    z = Rotate(z + w.first, 33) * k1;
+    v = WeakHashLen32WithSeeds(s, v.second * k1, x + w.first);
+    w = WeakHashLen32WithSeeds(s + 32, z + w.second, y + Fetch(s + 16));
+    std::swap(z, x);
+    s += 64;
+    len -= 128;
+  } while (LIKELY(len >= 128));
+  x += Rotate(v.first + z, 49) * k0;
+  y = y * k0 + Rotate(w.second, 37);
+  z = z * k0 + Rotate(w.first, 27);
+  w.first *= 9;
+  v.first *= k0;
+  // If 0 < len < 128, hash up to 4 chunks of 32 bytes each from the end of s.
+  for (size_t tail_done = 0; tail_done < len; ) {
+    tail_done += 32;
+    y = Rotate(x + y, 42) * k0 + v.second;
+    w.first += Fetch(s + len - tail_done + 16);
+    x = x * k0 + w.first;
+    z += w.second + Fetch(s + len - tail_done);
+    w.second += v.first;
+    v = WeakHashLen32WithSeeds(s + len - tail_done, v.first + z, v.second);
+    v.first *= k0;
+  }
+  // At this point our 56 bytes of state should contain more than
+  // enough information for a strong 128-bit hash.  We use two
+  // different 56-byte-to-8-byte hashes to get a 16-byte final result.
+  x = HashLen16(x, v.first);
+  y = HashLen16(y + z, w.first);
+  return uint128_t(HashLen16(x + v.second, w.second) + y,
+                   HashLen16(x + w.second, y + v.second));
+}
+
+STATIC_INLINE uint128_t CityHash128(const char *s, size_t len) {
+  return len >= 16 ?
+      CityHash128WithSeed(s + 16, len - 16,
+                          uint128_t(Fetch(s), Fetch(s + 8) + k0)) :
+      CityHash128WithSeed(s, len, uint128_t(k0, k1));
+}
+
+uint128_t Fingerprint128(const char* s, size_t len) {
+  return CityHash128(s, len);
+}
+}  // namespace farmhashcc
+namespace NAMESPACE_FOR_HASH_FUNCTIONS {
+
+// BASIC STRING HASHING
+
+// Hash function for a byte array.  See also Hash(), below.
+// May change from time to time, may differ on different platforms, may differ
+// depending on NDEBUG.
+uint32_t Hash32(const char* s, size_t len) {
+  return DebugTweak(
+      (can_use_sse41 & x86_64) ? farmhashnt::Hash32(s, len) :
+      (can_use_sse42 & can_use_aesni) ? farmhashsu::Hash32(s, len) :
+      can_use_sse42 ? farmhashsa::Hash32(s, len) :
+      farmhashmk::Hash32(s, len));
+}
+
+// Hash function for a byte array.  For convenience, a 32-bit seed is also
+// hashed into the result.
+// May change from time to time, may differ on different platforms, may differ
+// depending on NDEBUG.
+uint32_t Hash32WithSeed(const char* s, size_t len, uint32_t seed) {
+  return DebugTweak(
+      (can_use_sse41 & x86_64) ? farmhashnt::Hash32WithSeed(s, len, seed) :
+      (can_use_sse42 & can_use_aesni) ? farmhashsu::Hash32WithSeed(s, len, seed) :
+      can_use_sse42 ? farmhashsa::Hash32WithSeed(s, len, seed) :
+      farmhashmk::Hash32WithSeed(s, len, seed));
+}
+
+// Hash function for a byte array.  For convenience, a 64-bit seed is also
+// hashed into the result.  See also Hash(), below.
+// May change from time to time, may differ on different platforms, may differ
+// depending on NDEBUG.
+uint64_t Hash64(const char* s, size_t len) {
+  return DebugTweak(
+      (can_use_sse42 & x86_64) ?
+      farmhashte::Hash64(s, len) :
+      farmhashxo::Hash64(s, len));
+}
+
+// Hash function for a byte array.
+// May change from time to time, may differ on different platforms, may differ
+// depending on NDEBUG.
+size_t Hash(const char* s, size_t len) {
+  return sizeof(size_t) == 8 ? Hash64(s, len) : Hash32(s, len);
+}
+
+// Hash function for a byte array.  For convenience, a 64-bit seed is also
+// hashed into the result.
+// May change from time to time, may differ on different platforms, may differ
+// depending on NDEBUG.
+uint64_t Hash64WithSeed(const char* s, size_t len, uint64_t seed) {
+  return DebugTweak(farmhashna::Hash64WithSeed(s, len, seed));
+}
+
+// Hash function for a byte array.  For convenience, two seeds are also
+// hashed into the result.
+// May change from time to time, may differ on different platforms, may differ
+// depending on NDEBUG.
+uint64_t Hash64WithSeeds(const char* s, size_t len, uint64_t seed0, uint64_t seed1) {
+  return DebugTweak(farmhashna::Hash64WithSeeds(s, len, seed0, seed1));
+}
+
+// Hash function for a byte array.
+// May change from time to time, may differ on different platforms, may differ
+// depending on NDEBUG.
+uint128_t Hash128(const char* s, size_t len) {
+  return DebugTweak(farmhashcc::Fingerprint128(s, len));
+}
+
+// Hash function for a byte array.  For convenience, a 128-bit seed is also
+// hashed into the result.
+// May change from time to time, may differ on different platforms, may differ
+// depending on NDEBUG.
+uint128_t Hash128WithSeed(const char* s, size_t len, uint128_t seed) {
+  return DebugTweak(farmhashcc::CityHash128WithSeed(s, len, seed));
+}
+
+// BASIC NON-STRING HASHING
+
+// FINGERPRINTING (i.e., good, portable, forever-fixed hash functions)
+
+// Fingerprint function for a byte array.  Most useful in 32-bit binaries.
+uint32_t Fingerprint32(const char* s, size_t len) {
+  return farmhashmk::Hash32(s, len);
+}
+
+// Fingerprint function for a byte array.
+uint64_t Fingerprint64(const char* s, size_t len) {
+  return farmhashna::Hash64(s, len);
+}
+
+// Fingerprint function for a byte array.
+uint128_t Fingerprint128(const char* s, size_t len) {
+  return farmhashcc::Fingerprint128(s, len);
+}
+
+// Older and still available but perhaps not as fast as the above:
+//   farmhashns::Hash32{,WithSeed}()
+
+}  // namespace NAMESPACE_FOR_HASH_FUNCTIONS
+
+#if FARMHASHSELFTEST
+
+#ifndef FARMHASH_SELF_TEST_GUARD
+#define FARMHASH_SELF_TEST_GUARD
+#include <cstdio>
+#include <iostream>
+#include <string.h>
+
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::hex;
+
+static const uint64_t kSeed0 = 1234567;
+static const uint64_t kSeed1 = k0;
+static const int kDataSize = 1 << 20;
+static const int kTestSize = 300;
+#define kSeed128 Uint128(kSeed0, kSeed1)
+
+static char data[kDataSize];
+
+static int completed_self_tests = 0;
+static int errors = 0;
+
+// Initialize data to pseudorandom values.
+void Setup() {
+  if (completed_self_tests == 0) {
+    uint64_t a = 9;
+    uint64_t b = 777;
+    for (int i = 0; i < kDataSize; i++) {
+      a += b;
+      b += a;
+      a = (a ^ (a >> 41)) * k0;
+      b = (b ^ (b >> 41)) * k0 + i;
+      uint8_t u = b >> 37;
+      memcpy(data + i, &u, 1);  // uint8_t -> char
+    }
+  }
+}
+
+int NoteErrors() {
+#define NUM_SELF_TESTS 9
+  if (++completed_self_tests == NUM_SELF_TESTS)
+    std::exit(errors > 0);
+  return errors;
+}
+
+template <typename T> inline bool IsNonZero(T x) {
+  return x != 0;
+}
+
+template <> inline bool IsNonZero<uint128_t>(uint128_t x) {
+  return x != Uint128(0, 0);
+}
+
+#endif  // FARMHASH_SELF_TEST_GUARD
+
+namespace farmhashccTest {
+
+uint32_t CreateSeed(int offset, int salt) {
+  uint32_t h = static_cast<uint32_t>(salt & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h += static_cast<uint32_t>(offset & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  return h;
+}
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+#define SEED CreateSeed(offset, -1)
+#define SEED0 CreateSeed(offset, 0)
+#define SEED1 CreateSeed(offset, 1)
+
+#undef TESTING
+#define TESTING 1
+#if TESTING
+uint32_t expected[] = {
+4223616069u,
+3696677242u,
+1039179260u, 1690343979u, 1018511555u, 2464489001u,
+20368522u, 2663783964u, 175201532u, 1619210592u,
+4081014168u,
+2576519988u,
+3285042206u, 502478099u, 739479538u, 1500332790u,
+13754768u, 3789353455u, 3473868058u, 1909255088u,
+2212771159u,
+1112731063u,
+826915357u, 2893489933u, 118369799u, 1848668220u,
+1308219822u, 249416982u, 64306364u, 4221800195u,
+1020067935u,
+3955445564u,
+563346294u, 550236731u, 2339016688u, 1826259714u,
+3872358639u, 2295981050u, 1870005390u, 4015628802u,
+1451961420u,
+653440099u,
+1292493871u, 164377749u, 1717712483u, 463414587u,
+3924343675u, 1050492084u, 3566618804u, 2046983362u,
+31917516u,
+2957164615u,
+230718965u, 999595115u, 3534822176u, 2175709186u,
+965707431u, 441796222u, 2481718051u, 1827777486u,
+2590087362u,
+3879448744u,
+3515079898u, 1601433082u, 982764532u, 254808716u,
+1293372530u, 4205605817u, 947001462u, 1138890052u,
+176305566u,
+2447367541u,
+2973802542u, 4123621138u, 3083865840u, 1706367795u,
+792114347u, 2880110657u, 440613768u, 195054868u,
+1359016305u,
+3363804638u,
+649488537u, 1624045597u, 1441938215u, 3147758996u,
+3199173578u, 2597283203u, 2191333609u, 3763129144u,
+1117290165u,
+1062549743u,
+2565615889u, 1046361554u, 1581968261u, 1058773671u,
+1123053168u, 3807622275u, 1486749916u, 3900816089u,
+2437877004u,
+1894455839u,
+1912520953u, 1914997013u, 561048608u, 1643267444u,
+3671572006u, 194811086u, 1468911468u, 2179206286u,
+673206794u,
+3486923651u,
+3741426466u, 3292160512u, 697001377u, 1900763774u,
+3726097344u, 629282039u, 3578723715u, 2868028489u,
+3269862919u,
+2303349487u,
+3643953525u, 2307255916u, 849996280u, 732080434u,
+909961480u, 3542445214u, 2628347095u, 4236856917u,
+1380660650u,
+2631821908u,
+2007289004u, 3509705198u, 3788541675u, 789457322u,
+3090670546u, 638977894u, 3503881773u, 947102987u,
+1525325287u,
+1816697045u,
+2706647405u, 288763142u, 3505438495u, 481308609u,
+2882636782u, 3745162621u, 3503467033u, 428247823u,
+176408838u,
+333551502u,
+1001068721u, 1681483651u, 75380831u, 4191469679u,
+3627361839u, 2736617386u, 3120737438u, 1297502456u,
+864896482u,
+85674920u,
+2886047255u, 4119881331u, 2496990525u, 3442502055u,
+1806582817u, 3186345024u, 4099591287u, 2560171465u,
+3489229104u,
+3065015872u,
+2755089808u, 3098442882u, 378524719u, 2664097023u,
+1771960725u, 2901182183u, 55258521u, 1266621443u,
+581644891u,
+37790450u,
+1800731704u, 3601350920u, 53428754u, 2759476837u,
+3391093099u, 1496510311u, 2511119507u, 2636877410u,
+631613207u,
+1573846064u,
+260484875u, 1088212603u, 2369525206u, 322522428u,
+3191396600u, 2076543340u, 1552496658u, 2739811558u,
+3867875546u,
+2051584261u,
+2126250818u, 901517871u, 3651631165u, 1323139145u,
+1521111765u, 477802997u, 3508559783u, 383954241u,
+3804516756u,
+4250206331u,
+2655954340u, 2484996477u, 1417544845u, 1520282298u,
+2745204366u, 2869345147u, 1872738335u, 2592877343u,
+1619744564u,
+1804962124u,
+3458679890u, 423948620u, 273645618u, 4187865426u,
+376057175u, 2943431463u, 3581950599u, 1035398331u,
+1088213445u,
+861988903u,
+1323370244u, 777069428u, 506235917u, 369720851u,
+2789995854u, 230915180u, 1505086948u, 940361236u,
+3727873235u,
+1159167499u,
+1860302871u, 3456858862u, 3923555152u, 2131072714u,
+2910461068u, 3671950363u, 2010742682u, 4088068851u,
+3616470388u,
+2087714788u,
+221675509u, 1230154072u, 3450704646u, 1463226695u,
+1998357699u, 266026801u, 619568740u, 3560427266u,
+4148162586u,
+3150417316u,
+1356375822u, 2056097622u, 627905802u, 3881675638u,
+2309738053u, 971916703u, 3447805361u, 1673575328u,
+673084328u,
+3317849401u,
+2836362782u, 2377208890u, 3275350588u, 158350552u,
+2553241779u, 2497264995u, 3262882649u, 3897937187u,
+1598963653u,
+3068514414u,
+601541505u, 374517071u, 3380795976u, 235752573u,
+284670003u, 2990192160u, 904937105u, 2306579150u,
+2117362589u,
+1635274830u,
+3355572906u, 170799903u, 1226685528u, 664567688u,
+413219134u, 878324258u, 4026159448u, 3620649295u,
+1823625377u,
+3175888439u,
+1759344347u, 2640637095u, 3549558u, 2192984935u,
+978623493u, 804017880u, 3877562323u, 3843116489u,
+1641748342u,
+1853539444u,
+3001178468u, 3443560727u, 2685426077u, 1653064722u,
+349231508u, 2726789654u, 3136215581u, 768402830u,
+269384321u,
+531936536u,
+2592883487u, 1343156334u, 3628619802u, 1477143570u,
+4269458419u, 3285611028u, 959104925u, 2712290710u,
+3480237248u,
+835796333u,
+2020636251u, 1191914589u, 126521603u, 4288023938u,
+3731699932u, 2136758855u, 985780142u, 193807575u,
+1850544433u,
+653947619u,
+3929316796u, 381871169u, 950486363u, 1787262279u,
+360480382u, 1800636585u, 1039258631u, 3682073259u,
+1262819303u,
+1786000319u,
+1570627191u, 893065837u, 301304916u, 1478469809u,
+623018819u, 2742232545u, 2058913014u, 1706060059u,
+2421125401u,
+1315829592u,
+3208766775u, 1805586156u, 575853086u, 3085025513u,
+4010908260u, 2344058256u, 3814407434u, 1458485673u,
+2474514786u,
+3581895658u,
+2710719679u, 190812706u, 2135454262u, 2620080728u,
+3400757986u, 1669914857u, 1559978393u, 1629811331u,
+3096616493u,
+1391424435u,
+4158376003u, 1015657076u, 794783832u, 479952178u,
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+};
+
+// Return false only if offset is -1 and a spot check of 3 hashes all yield 0.
+bool Test(int offset, int len = 0) {
+#undef Check
+#undef IsAlive
+
+#define Check(x) do {                                                   \
+  const uint32_t actual = (x), e = expected[index++];                   \
+  bool ok = actual == e;                                                \
+  if (!ok) {                                                            \
+    cerr << "expected " << hex << e << " but got " << actual << endl;   \
+    ++errors;                                                           \
+  }                                                                     \
+  assert(ok);                                                           \
+} while (0)
+
+#define IsAlive(x) do { alive += IsNonZero(x); } while (0)
+
+  // After the following line is where the uses of "Check" and such will go.
+  static int index = 0;
+if (offset == -1) { int alive = 0; IsAlive(farmhashcc::Hash32WithSeed(data, len++, SEED)); IsAlive(farmhashcc::Hash32(data, len++)); { uint128_t u = farmhashcc::Fingerprint128(data, len++); uint64_t h = Uint128Low64(u); IsAlive(h >> 32); IsAlive((h << 32) >> 32); h = Uint128High64(u); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } len -= 3; return alive > 0; }
+Check(farmhashcc::Hash32WithSeed(data + offset, len, SEED));
+Check(farmhashcc::Hash32(data + offset, len));
+{ uint128_t u = farmhashcc::Fingerprint128(data + offset, len); uint64_t h = Uint128Low64(u); Check(h >> 32); Check((h << 32) >> 32); h = Uint128High64(u); Check(h >> 32); Check((h << 32) >> 32); }
+{ uint128_t u = farmhashcc::CityHash128WithSeed(data + offset, len, Uint128(SEED0, SEED1)); uint64_t h = Uint128Low64(u); Check(h >> 32); Check((h << 32) >> 32); h = Uint128High64(u); Check(h >> 32); Check((h << 32) >> 32); }
+
+  return true;
+#undef Check
+#undef IsAlive
+}
+
+int RunTest() {
+  Setup();
+  int i = 0;
+  cout << "Running farmhashccTest";
+  if (!Test(-1)) {
+    cout << "... Unavailable\n";
+    return NoteErrors();
+  }
+  // Good.  The function is attempting to hash, so run the full test.
+  int errors_prior_to_test = errors;
+  for ( ; i < kTestSize - 1; i++) {
+    Test(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    Test(0, i);
+  }
+  Test(0, kDataSize);
+  cout << (errors == errors_prior_to_test ? "... OK\n" : "... Failed\n");
+  return NoteErrors();
+}
+
+#else
+
+// After the following line is where the code to print hash codes will go.
+void Dump(int offset, int len) {
+cout << farmhashcc::Hash32WithSeed(data + offset, len, SEED) << "u," << endl;
+cout << farmhashcc::Hash32(data + offset, len) << "u," << endl;
+{ uint128_t u = farmhashcc::Fingerprint128(data + offset, len); uint64_t h = Uint128Low64(u); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u, "; h = Uint128High64(u); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+{ uint128_t u = farmhashcc::CityHash128WithSeed(data + offset, len, Uint128(SEED0, SEED1)); uint64_t h = Uint128Low64(u); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u, "; h = Uint128High64(u); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+}
+
+#endif
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+
+}  // namespace farmhashccTest
+
+#if TESTING
+
+static int farmhashccTestResult = farmhashccTest::RunTest();
+
+#else
+int main(int argc, char** argv) {
+  Setup();
+  cout << "uint32_t expected[] = {\n";
+  int i = 0;
+  for ( ; i < kTestSize - 1; i++) {
+    farmhashccTest::Dump(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    farmhashccTest::Dump(0, i);
+  }
+  farmhashccTest::Dump(0, kDataSize);
+  cout << "};\n";
+}
+#endif
+#ifndef FARMHASH_SELF_TEST_GUARD
+#define FARMHASH_SELF_TEST_GUARD
+#include <cstdio>
+#include <iostream>
+#include <string.h>
+
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::hex;
+
+static const uint64_t kSeed0 = 1234567;
+static const uint64_t kSeed1 = k0;
+static const int kDataSize = 1 << 20;
+static const int kTestSize = 300;
+#define kSeed128 Uint128(kSeed0, kSeed1)
+
+static char data[kDataSize];
+
+static int completed_self_tests = 0;
+static int errors = 0;
+
+// Initialize data to pseudorandom values.
+void Setup() {
+  if (completed_self_tests == 0) {
+    uint64_t a = 9;
+    uint64_t b = 777;
+    for (int i = 0; i < kDataSize; i++) {
+      a += b;
+      b += a;
+      a = (a ^ (a >> 41)) * k0;
+      b = (b ^ (b >> 41)) * k0 + i;
+      uint8_t u = b >> 37;
+      memcpy(data + i, &u, 1);  // uint8_t -> char
+    }
+  }
+}
+
+int NoteErrors() {
+#define NUM_SELF_TESTS 9
+  if (++completed_self_tests == NUM_SELF_TESTS)
+    std::exit(errors > 0);
+  return errors;
+}
+
+template <typename T> inline bool IsNonZero(T x) {
+  return x != 0;
+}
+
+template <> inline bool IsNonZero<uint128_t>(uint128_t x) {
+  return x != Uint128(0, 0);
+}
+
+#endif  // FARMHASH_SELF_TEST_GUARD
+
+namespace farmhashmkTest {
+
+uint32_t CreateSeed(int offset, int salt) {
+  uint32_t h = static_cast<uint32_t>(salt & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h += static_cast<uint32_t>(offset & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  return h;
+}
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+#define SEED CreateSeed(offset, -1)
+#define SEED0 CreateSeed(offset, 0)
+#define SEED1 CreateSeed(offset, 1)
+
+#undef TESTING
+#define TESTING 1
+#if TESTING
+uint32_t expected[] = {
+4223616069u,
+3696677242u,
+4081014168u,
+2576519988u,
+2212771159u,
+1112731063u,
+1020067935u,
+3955445564u,
+1451961420u,
+653440099u,
+31917516u,
+2957164615u,
+2590087362u,
+3879448744u,
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+2447367541u,
+1359016305u,
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+1062549743u,
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+1592885012u,
+864896482u,
+2101378090u,
+3489229104u,
+2118965695u,
+581644891u,
+2718789079u,
+631613207u,
+4228658372u,
+3867875546u,
+3531368319u,
+3804516756u,
+3317755099u,
+1619744564u,
+2884717286u,
+1088213445u,
+2667691076u,
+3727873235u,
+2330406762u,
+3616470388u,
+967660719u,
+4148162586u,
+315219121u,
+673084328u,
+3047602355u,
+1598963653u,
+1267826661u,
+2117362589u,
+2861192253u,
+1823625377u,
+1380350078u,
+1641748342u,
+1176094482u,
+269384321u,
+2178982315u,
+3480237248u,
+2660755208u,
+1850544433u,
+3429699438u,
+1262819303u,
+640556464u,
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+2188368608u,
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+3636652160u,
+2167020081u,
+1207897204u,
+28752417u,
+2895834146u,
+3640845375u,
+3750293073u,
+548997850u,
+4207814196u,
+4183030708u,
+2462810989u,
+3929965401u,
+};
+
+// Return false only if offset is -1 and a spot check of 3 hashes all yield 0.
+bool Test(int offset, int len = 0) {
+#undef Check
+#undef IsAlive
+
+#define Check(x) do {                                                   \
+  const uint32_t actual = (x), e = expected[index++];                   \
+  bool ok = actual == e;                                                \
+  if (!ok) {                                                            \
+    cerr << "expected " << hex << e << " but got " << actual << endl;   \
+    ++errors;                                                           \
+  }                                                                     \
+  assert(ok);                                                           \
+} while (0)
+
+#define IsAlive(x) do { alive += IsNonZero(x); } while (0)
+
+  // After the following line is where the uses of "Check" and such will go.
+  static int index = 0;
+if (offset == -1) { int alive = 0; IsAlive(farmhashmk::Hash32WithSeed(data, len++, SEED)); IsAlive(farmhashmk::Hash32(data, len++)); IsAlive(farmhashmk::Hash32(data, len++)); len -= 3; return alive > 0; }
+Check(farmhashmk::Hash32WithSeed(data + offset, len, SEED));
+Check(farmhashmk::Hash32(data + offset, len));
+
+  return true;
+#undef Check
+#undef IsAlive
+}
+
+int RunTest() {
+  Setup();
+  int i = 0;
+  cout << "Running farmhashmkTest";
+  if (!Test(-1)) {
+    cout << "... Unavailable\n";
+    return NoteErrors();
+  }
+  // Good.  The function is attempting to hash, so run the full test.
+  int errors_prior_to_test = errors;
+  for ( ; i < kTestSize - 1; i++) {
+    Test(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    Test(0, i);
+  }
+  Test(0, kDataSize);
+  cout << (errors == errors_prior_to_test ? "... OK\n" : "... Failed\n");
+  return NoteErrors();
+}
+
+#else
+
+// After the following line is where the code to print hash codes will go.
+void Dump(int offset, int len) {
+cout << farmhashmk::Hash32WithSeed(data + offset, len, SEED) << "u," << endl;
+cout << farmhashmk::Hash32(data + offset, len) << "u," << endl;
+}
+
+#endif
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+
+}  // namespace farmhashmkTest
+
+#if TESTING
+
+static int farmhashmkTestResult = farmhashmkTest::RunTest();
+
+#else
+int main(int argc, char** argv) {
+  Setup();
+  cout << "uint32_t expected[] = {\n";
+  int i = 0;
+  for ( ; i < kTestSize - 1; i++) {
+    farmhashmkTest::Dump(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    farmhashmkTest::Dump(0, i);
+  }
+  farmhashmkTest::Dump(0, kDataSize);
+  cout << "};\n";
+}
+#endif
+#ifndef FARMHASH_SELF_TEST_GUARD
+#define FARMHASH_SELF_TEST_GUARD
+#include <cstdio>
+#include <iostream>
+#include <string.h>
+
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::hex;
+
+static const uint64_t kSeed0 = 1234567;
+static const uint64_t kSeed1 = k0;
+static const int kDataSize = 1 << 20;
+static const int kTestSize = 300;
+#define kSeed128 Uint128(kSeed0, kSeed1)
+
+static char data[kDataSize];
+
+static int completed_self_tests = 0;
+static int errors = 0;
+
+// Initialize data to pseudorandom values.
+void Setup() {
+  if (completed_self_tests == 0) {
+    uint64_t a = 9;
+    uint64_t b = 777;
+    for (int i = 0; i < kDataSize; i++) {
+      a += b;
+      b += a;
+      a = (a ^ (a >> 41)) * k0;
+      b = (b ^ (b >> 41)) * k0 + i;
+      uint8_t u = b >> 37;
+      memcpy(data + i, &u, 1);  // uint8_t -> char
+    }
+  }
+}
+
+int NoteErrors() {
+#define NUM_SELF_TESTS 9
+  if (++completed_self_tests == NUM_SELF_TESTS)
+    std::exit(errors > 0);
+  return errors;
+}
+
+template <typename T> inline bool IsNonZero(T x) {
+  return x != 0;
+}
+
+template <> inline bool IsNonZero<uint128_t>(uint128_t x) {
+  return x != Uint128(0, 0);
+}
+
+#endif  // FARMHASH_SELF_TEST_GUARD
+
+namespace farmhashnaTest {
+
+uint32_t CreateSeed(int offset, int salt) {
+  uint32_t h = static_cast<uint32_t>(salt & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h += static_cast<uint32_t>(offset & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  return h;
+}
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+#define SEED CreateSeed(offset, -1)
+#define SEED0 CreateSeed(offset, 0)
+#define SEED1 CreateSeed(offset, 1)
+
+#undef TESTING
+#define TESTING 1
+#if TESTING
+uint32_t expected[] = {
+1140953930u, 861465670u,
+3277735313u, 2681724312u,
+2598464059u, 797982799u,
+890626835u, 800175912u,
+2603993599u, 921001710u,
+1410420968u, 2134990486u,
+3283896453u, 1867689945u,
+2914424215u, 2244477846u,
+255297188u, 2992121793u,
+1110588164u, 4186314283u,
+161451183u, 3943596029u,
+4019337850u, 452431531u,
+283198166u, 2741341286u,
+3379021470u, 2557197665u,
+299850021u, 2532580744u,
+452473466u, 1706958772u,
+1298374911u, 3099673830u,
+2199864459u, 3696623795u,
+236935126u, 2976578695u,
+4055299123u, 3281581178u,
+1053458494u, 1882212500u,
+2305012065u, 2169731866u,
+3456121707u, 275903667u,
+458884671u, 3033004529u,
+3058973506u, 2379411653u,
+1898235244u, 1402319660u,
+2700149065u, 2699376854u,
+147814787u, 720739346u,
+2433714046u, 4222949502u,
+4220361840u, 1712034059u,
+3425469811u, 3690733394u,
+4148372108u, 1330324210u,
+594028478u, 2921867846u,
+1635026870u, 192883107u,
+780716741u, 1728752234u,
+3280331829u, 326029180u,
+3969463346u, 1436364519u,
+393215742u, 3349570000u,
+3824583307u, 1612122221u,
+2859809759u, 3808705738u,
+1379537552u, 1646032583u,
+2233466664u, 1432476832u,
+4023053163u, 2650381482u,
+2052294713u, 3552092450u,
+1628777059u, 1499109081u,
+3476440786u, 3829307897u,
+2960536756u, 1554038301u,
+1145519619u, 3190844552u,
+2902102606u, 3600725550u,
+237495366u, 540224401u,
+65721842u, 489963606u,
+1448662590u, 397635823u,
+1596489240u, 1562872448u,
+1790705123u, 2128624475u,
+180854224u, 2604346966u,
+1435705557u, 1262831810u,
+155445229u, 1672724608u,
+1669465176u, 1341975128u,
+663607706u, 2077310004u,
+3610042449u, 1911523866u,
+1043692997u, 1454396064u,
+2563776023u, 294527927u,
+1099072299u, 1389770549u,
+703505868u, 678706990u,
+2952353448u, 2026137563u,
+3603803785u, 629449419u,
+1933894405u, 3043213226u,
+226132789u, 2489287368u,
+1552847036u, 645684964u,
+3828089804u, 3632594520u,
+187883449u, 230403464u,
+3151491850u, 3272648435u,
+3729087873u, 1303930448u,
+2002861219u, 165370827u,
+916494250u, 1230085527u,
+3103338579u, 3064290191u,
+3807265751u, 3628174014u,
+231181488u, 851743255u,
+2295806711u, 1781190011u,
+2988893883u, 1554380634u,
+1142264800u, 3667013118u,
+1968445277u, 315203929u,
+2638023604u, 2290487377u,
+732137533u, 1909203251u,
+440398219u, 1891630171u,
+1380301172u, 1498556724u,
+4072067757u, 4165088768u,
+4204318635u, 441430649u,
+3931792696u, 197618179u,
+956300927u, 914413116u,
+3010839769u, 2837339569u,
+2148126371u, 1913303225u,
+3074915312u, 3117299654u,
+4139181436u, 2993479124u,
+3178848746u, 1357272220u,
+1438494951u, 507436733u,
+667183474u, 2084369203u,
+3854939912u, 1413396341u,
+126024219u, 146044391u,
+1016656857u, 3022024459u,
+3254014218u, 429095991u,
+165589978u, 1578546616u,
+985653208u, 1718653828u,
+623071693u, 366414107u,
+249776086u, 1207522198u,
+3047342438u, 2991127487u,
+3120876698u, 1684583131u,
+46987739u, 1157614300u,
+863214540u, 1087193030u,
+199124911u, 520792961u,
+3614377032u, 586863115u,
+3331828431u, 1013201099u,
+1716848157u, 4033596884u,
+1164298657u, 4140791139u,
+1146169032u, 1434258493u,
+3824360466u, 3242407770u,
+3725511003u, 232064808u,
+872586426u, 762243036u,
+2736953692u, 816692935u,
+512845449u, 3748861010u,
+2266795890u, 3781899767u,
+4290630595u, 517646945u,
+22638523u, 648000590u,
+959214578u, 558910384u,
+1283799121u, 3047062993u,
+1024246061u, 4027776454u,
+3544509313u, 622325861u,
+834785312u, 382936554u,
+411505255u, 1973395102u,
+1825135056u, 2725923798u,
+580988377u, 2826990641u,
+3474970689u, 1029055034u,
+812546227u, 2506885666u,
+2584372201u, 1758123094u,
+589567754u, 325737734u,
+345313518u, 2022370576u,
+3886113119u, 3338548567u,
+257578986u, 3698087965u,
+1776047957u, 1771384107u,
+3604937815u, 3198590202u,
+2305332220u, 191910725u,
+4232136669u, 427759438u,
+4244322689u, 542201663u,
+3315355162u, 2135941665u,
+556609672u, 45845311u,
+1175961330u, 3948351189u,
+23075771u, 3252374102u,
+1634635545u, 4151937410u,
+713127376u, 1467786451u,
+663013031u, 3444053918u,
+2638154051u, 810082938u,
+3077742128u, 1062268187u,
+2115441882u, 4081398201u,
+3735739145u, 2794294783u,
+2335576331u, 2560479831u,
+1379288194u, 4225182569u,
+2442302747u, 3948961926u,
+3958366652u, 3067277639u,
+3667516477u, 1709989541u,
+1516711748u, 2339636583u,
+4188504038u, 59581167u,
+2725013602u, 3639843023u,
+2658147000u, 2643979752u,
+3758739543u, 4189944477u,
+2470483982u, 877580602u,
+2995362413u, 118817200u,
+3252925478u, 2062343506u,
+3981838403u, 3762572073u,
+1231633714u, 4168280671u,
+2931588131u, 3284356565u,
+1129162571u, 732225574u,
+4173605289u, 1407328702u,
+1677744031u, 3532596884u,
+3232041815u, 1652884780u,
+2256541290u, 3459463480u,
+3740979556u, 259034107u,
+2227121257u, 1426140634u,
+3606709555u, 3424793077u,
+315836068u, 3200749877u,
+1386256573u, 24035717u,
+2982018998u, 1811050648u,
+234531934u, 1115203611u,
+1598686658u, 3146815575u,
+1603559457u, 323296368u,
+2632963283u, 1778459926u,
+739944537u, 579625482u,
+3486330348u, 492621815u,
+1231665285u, 2457048126u,
+3903349120u, 389846205u,
+3355404249u, 3275550588u,
+1052645068u, 862072556u,
+2834153464u, 1481069623u,
+2657392572u, 4279236653u,
+1688445808u, 701920051u,
+3740748788u, 3388062747u,
+1873358321u, 2152785640u,
+883382081u, 1005815394u,
+1020177209u, 734239551u,
+2371453141u, 100326520u,
+3488500412u, 1279682138u,
+2610427744u, 49703572u,
+3026361211u, 605900428u,
+302392721u, 2509302188u,
+1416453607u, 2815915291u,
+1862819968u, 519710058u,
+2450888314u, 4017598378u,
+937074653u, 3035635454u,
+1590230729u, 3268013438u,
+2710029305u, 12886044u,
+3711259084u, 2627383582u,
+3895772404u, 648534979u,
+260307902u, 855990313u,
+3669691805u, 263366740u,
+2938543471u, 414331688u,
+3080542944u, 3405007814u,
+3565059103u, 1190977418u,
+390836981u, 1606450012u,
+2649808239u, 2514169310u,
+2747519432u, 4129538640u,
+1721522849u, 492099164u,
+792990594u, 3625507637u,
+2271095827u, 2993032712u,
+2302363854u, 4013112951u,
+1111617969u, 2183845740u,
+795918276u, 1116991810u,
+3110898804u, 3963062126u,
+2737064702u, 462795667u,
+937372240u, 1343017609u,
+1091041189u, 2790555455u,
+277024217u, 25485284u,
+1166522068u, 1623631848u,
+241727183u, 2836158787u,
+3112996740u, 573836428u,
+2721658101u, 1937681565u,
+4175169209u, 3190765433u,
+1970000788u, 1668258120u,
+114616703u, 954762543u,
+199237753u, 4094644498u,
+2522281978u, 732086117u,
+1756889687u, 2936126607u,
+2437031370u, 4103143808u,
+3883389541u, 3171090854u,
+2483004780u, 1927385370u,
+2360538162u, 2740855009u,
+4241185118u, 1492209542u,
+1672737098u, 2148675559u,
+1789864670u, 2434313103u,
+2319172611u, 2760941207u,
+2636210123u, 1338083267u,
+1128080590u, 822806371u,
+1199583556u, 314727461u,
+1335160250u, 2084630531u,
+1156261526u, 316766066u,
+112090465u, 3129033323u,
+2746885618u, 636616055u,
+2582210744u, 1721064910u,
+3468394263u, 470463518u,
+2076016059u, 408721884u,
+2121041886u, 378460278u,
+1915948002u, 357324860u,
+2301682622u, 2691859523u,
+1869756364u, 2429314418u,
+2193146527u, 1185564327u,
+2614088922u, 1975527044u,
+919067651u, 2855948894u,
+3662539576u, 1943802836u,
+3529473373u, 1490330107u,
+366036094u, 3384241033u,
+4276268604u, 448403661u,
+4271796078u, 1910401882u,
+3077107698u, 299427366u,
+2035665349u, 3201262636u,
+3738454258u, 2554452696u,
+3588997135u, 3363895827u,
+1267505995u, 1852004679u,
+2237827073u, 2803250686u,
+3468044908u, 2143572850u,
+1728158656u, 1022551180u,
+1996680960u, 839529273u,
+2400647871u, 2201096054u,
+3606433628u, 2597259793u,
+3544595875u, 3909443124u,
+819278607u, 3447346709u,
+806136613u, 2711436388u,
+3656063205u, 837475154u,
+694525336u, 4070212073u,
+4011303412u, 1068395209u,
+438095290u, 484603494u,
+2673730227u, 737767009u,
+642310823u, 3914002299u,
+308425103u, 268427550u,
+1334387085u, 4069797497u,
+4280783219u, 2914011058u,
+4243643405u, 2849988118u,
+2504230175u, 1817156623u,
+2804200483u, 3406991497u,
+2948254999u, 2102063419u,
+1071272117u, 514889942u,
+571972433u, 1246595599u,
+1735616066u, 1539151988u,
+1230831543u, 277987182u,
+4269526481u, 991511607u,
+95237878u, 2005032160u,
+1291113144u, 626619670u,
+3560835907u, 164940926u,
+1433635018u, 116647396u,
+3039097112u, 2868163232u,
+1141645918u, 1764165478u,
+881378302u, 2159170082u,
+2953647681u, 1011320066u,
+184856151u, 1723308975u,
+336034862u, 2017579106u,
+1476681709u, 147523618u,
+3896252223u, 2264728166u,
+944743644u, 1694443528u,
+2690700128u, 1947321519u,
+735478508u, 4058183171u,
+260177668u, 505662155u,
+2391691262u, 1920739747u,
+3216960415u, 1898176786u,
+3722741628u, 1511077569u,
+449636564u, 983350414u,
+2580237367u, 2055059789u,
+1103819072u, 2089123665u,
+3873755579u, 2718467458u,
+3124338704u, 3204250304u,
+2475035432u, 1120017626u,
+3873758287u, 1982999824u,
+2950794582u, 780634378u,
+2842141483u, 4029205195u,
+1656892865u, 3330993377u,
+80890710u, 1953796601u,
+3873078673u, 136118734u,
+2317676604u, 4199091610u,
+1864448181u, 3063437608u,
+1699452298u, 1403506686u,
+1513069466u, 2348491299u,
+4273657745u, 4055855649u,
+1805475756u, 2562064338u,
+973124563u, 4197091358u,
+172861513u, 2858726767u,
+4271866024u, 3071338162u,
+3590386266u, 2328277259u,
+1096050703u, 1189614342u,
+459509140u, 771592405u,
+817999971u, 3740825152u,
+520400189u, 1941874618u,
+185232757u, 4032960199u,
+3928245258u, 3527721294u,
+1301118856u, 752188080u,
+3512945009u, 308584855u,
+2105373972u, 752872278u,
+3823368815u, 3760952096u,
+4250142168u, 2565680167u,
+3646354146u, 1259957455u,
+1085857127u, 3471066607u,
+38924274u, 3770488806u,
+1083869477u, 3312508103u,
+71956383u, 3738784936u,
+3099963860u, 1255084262u,
+4286969992u, 3621849251u,
+1190908967u, 1831557743u,
+2363435042u, 54945052u,
+4059585566u, 4023974274u,
+1788578453u, 3442180039u,
+2534883189u, 2432427547u,
+3909757989u, 731996369u,
+4168347425u, 1356028512u,
+2741583197u, 1280920000u,
+312887059u, 3259015297u,
+3946278527u, 4135481831u,
+1281043691u, 1121403845u,
+3312292477u, 1819941269u,
+1741932545u, 3293015483u,
+2127558730u, 713121337u,
+2635469238u, 486003418u,
+4015067527u, 2976737859u,
+2108187161u, 927011680u,
+1970188338u, 4177613234u,
+1799789551u, 2118505126u,
+4134691985u, 1958963937u,
+1929210029u, 2555835851u,
+2768832862u, 910892050u,
+2567532373u, 4075249328u,
+86689814u, 3726640307u,
+1392137718u, 1240000030u,
+4104757832u, 3026358429u,
+313797689u, 1435798509u,
+3101500919u, 1241665335u,
+3573008472u, 3615577014u,
+3767659003u, 3134294021u,
+4063565523u, 2296824134u,
+1541946015u, 3087190425u,
+2693152531u, 2199672572u,
+2123763822u, 1034244398u,
+857839960u, 2515339233u,
+2228007483u, 1628096047u,
+2116502287u, 2502657424u,
+2809830736u, 460237542u,
+450205998u, 3646921704u,
+3818199357u, 1808504491u,
+1950698961u, 2069753399u,
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+4166253320u, 2747410691u,
+};
+
+// Return false only if offset is -1 and a spot check of 3 hashes all yield 0.
+bool Test(int offset, int len = 0) {
+#undef Check
+#undef IsAlive
+
+#define Check(x) do {                                                   \
+  const uint32_t actual = (x), e = expected[index++];                   \
+  bool ok = actual == e;                                                \
+  if (!ok) {                                                            \
+    cerr << "expected " << hex << e << " but got " << actual << endl;   \
+    ++errors;                                                           \
+  }                                                                     \
+  assert(ok);                                                           \
+} while (0)
+
+#define IsAlive(x) do { alive += IsNonZero(x); } while (0)
+
+  // After the following line is where the uses of "Check" and such will go.
+  static int index = 0;
+if (offset == -1) { int alive = 0; { uint64_t h = farmhashna::Hash64WithSeeds(data, len++, SEED0, SEED1); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } { uint64_t h = farmhashna::Hash64WithSeed(data, len++, SEED); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } { uint64_t h = farmhashna::Hash64(data, len++); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } len -= 3; return alive > 0; }
+{ uint64_t h = farmhashna::Hash64WithSeeds(data + offset, len, SEED0, SEED1); Check(h >> 32); Check((h << 32) >> 32); }
+{ uint64_t h = farmhashna::Hash64WithSeed(data + offset, len, SEED); Check(h >> 32); Check((h << 32) >> 32); }
+{ uint64_t h = farmhashna::Hash64(data + offset, len); Check(h >> 32); Check((h << 32) >> 32); }
+
+  return true;
+#undef Check
+#undef IsAlive
+}
+
+int RunTest() {
+  Setup();
+  int i = 0;
+  cout << "Running farmhashnaTest";
+  if (!Test(-1)) {
+    cout << "... Unavailable\n";
+    return NoteErrors();
+  }
+  // Good.  The function is attempting to hash, so run the full test.
+  int errors_prior_to_test = errors;
+  for ( ; i < kTestSize - 1; i++) {
+    Test(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    Test(0, i);
+  }
+  Test(0, kDataSize);
+  cout << (errors == errors_prior_to_test ? "... OK\n" : "... Failed\n");
+  return NoteErrors();
+}
+
+#else
+
+// After the following line is where the code to print hash codes will go.
+void Dump(int offset, int len) {
+{ uint64_t h = farmhashna::Hash64WithSeeds(data + offset, len, SEED0, SEED1); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+{ uint64_t h = farmhashna::Hash64WithSeed(data + offset, len, SEED); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+{ uint64_t h = farmhashna::Hash64(data + offset, len); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+}
+
+#endif
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+
+}  // namespace farmhashnaTest
+
+#if TESTING
+
+static int farmhashnaTestResult = farmhashnaTest::RunTest();
+
+#else
+int main(int argc, char** argv) {
+  Setup();
+  cout << "uint32_t expected[] = {\n";
+  int i = 0;
+  for ( ; i < kTestSize - 1; i++) {
+    farmhashnaTest::Dump(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    farmhashnaTest::Dump(0, i);
+  }
+  farmhashnaTest::Dump(0, kDataSize);
+  cout << "};\n";
+}
+#endif
+#ifndef FARMHASH_SELF_TEST_GUARD
+#define FARMHASH_SELF_TEST_GUARD
+#include <cstdio>
+#include <iostream>
+#include <string.h>
+
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::hex;
+
+static const uint64_t kSeed0 = 1234567;
+static const uint64_t kSeed1 = k0;
+static const int kDataSize = 1 << 20;
+static const int kTestSize = 300;
+#define kSeed128 Uint128(kSeed0, kSeed1)
+
+static char data[kDataSize];
+
+static int completed_self_tests = 0;
+static int errors = 0;
+
+// Initialize data to pseudorandom values.
+void Setup() {
+  if (completed_self_tests == 0) {
+    uint64_t a = 9;
+    uint64_t b = 777;
+    for (int i = 0; i < kDataSize; i++) {
+      a += b;
+      b += a;
+      a = (a ^ (a >> 41)) * k0;
+      b = (b ^ (b >> 41)) * k0 + i;
+      uint8_t u = b >> 37;
+      memcpy(data + i, &u, 1);  // uint8_t -> char
+    }
+  }
+}
+
+int NoteErrors() {
+#define NUM_SELF_TESTS 9
+  if (++completed_self_tests == NUM_SELF_TESTS)
+    std::exit(errors > 0);
+  return errors;
+}
+
+template <typename T> inline bool IsNonZero(T x) {
+  return x != 0;
+}
+
+template <> inline bool IsNonZero<uint128_t>(uint128_t x) {
+  return x != Uint128(0, 0);
+}
+
+#endif  // FARMHASH_SELF_TEST_GUARD
+
+namespace farmhashntTest {
+
+uint32_t CreateSeed(int offset, int salt) {
+  uint32_t h = static_cast<uint32_t>(salt & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h += static_cast<uint32_t>(offset & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  return h;
+}
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+#define SEED CreateSeed(offset, -1)
+#define SEED0 CreateSeed(offset, 0)
+#define SEED1 CreateSeed(offset, 1)
+
+#undef TESTING
+#define TESTING 1
+#if TESTING
+uint32_t expected[] = {
+2681724312u,
+797982799u,
+921001710u,
+2134990486u,
+2244477846u,
+2992121793u,
+3943596029u,
+452431531u,
+2557197665u,
+2532580744u,
+3099673830u,
+3696623795u,
+3281581178u,
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+3033004529u,
+1402319660u,
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+1712034059u,
+1330324210u,
+2921867846u,
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+489963606u,
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+1262831810u,
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+2077310004u,
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+294527927u,
+1389770549u,
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+629449419u,
+2489287368u,
+645684964u,
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+3272648435u,
+165370827u,
+1230085527u,
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+851743255u,
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+197618179u,
+914413116u,
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+3117299654u,
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+1413396341u,
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+};
+
+// Return false only if offset is -1 and a spot check of 3 hashes all yield 0.
+bool Test(int offset, int len = 0) {
+#undef Check
+#undef IsAlive
+
+#define Check(x) do {                                                   \
+  const uint32_t actual = (x), e = expected[index++];                   \
+  bool ok = actual == e;                                                \
+  if (!ok) {                                                            \
+    cerr << "expected " << hex << e << " but got " << actual << endl;   \
+    ++errors;                                                           \
+  }                                                                     \
+  assert(ok);                                                           \
+} while (0)
+
+#define IsAlive(x) do { alive += IsNonZero(x); } while (0)
+
+  // After the following line is where the uses of "Check" and such will go.
+  static int index = 0;
+if (offset == -1) { int alive = 0; IsAlive(farmhashnt::Hash32WithSeed(data, len++, SEED)); IsAlive(farmhashnt::Hash32(data, len++)); IsAlive(farmhashnt::Hash32(data, len++)); len -= 3; return alive > 0; }
+Check(farmhashnt::Hash32WithSeed(data + offset, len, SEED));
+Check(farmhashnt::Hash32(data + offset, len));
+
+  return true;
+#undef Check
+#undef IsAlive
+}
+
+int RunTest() {
+  Setup();
+  int i = 0;
+  cout << "Running farmhashntTest";
+  if (!Test(-1)) {
+    cout << "... Unavailable\n";
+    return NoteErrors();
+  }
+  // Good.  The function is attempting to hash, so run the full test.
+  int errors_prior_to_test = errors;
+  for ( ; i < kTestSize - 1; i++) {
+    Test(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    Test(0, i);
+  }
+  Test(0, kDataSize);
+  cout << (errors == errors_prior_to_test ? "... OK\n" : "... Failed\n");
+  return NoteErrors();
+}
+
+#else
+
+// After the following line is where the code to print hash codes will go.
+void Dump(int offset, int len) {
+cout << farmhashnt::Hash32WithSeed(data + offset, len, SEED) << "u," << endl;
+cout << farmhashnt::Hash32(data + offset, len) << "u," << endl;
+}
+
+#endif
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+
+}  // namespace farmhashntTest
+
+#if TESTING
+
+static int farmhashntTestResult = farmhashntTest::RunTest();
+
+#else
+int main(int argc, char** argv) {
+  Setup();
+  cout << "uint32_t expected[] = {\n";
+  int i = 0;
+  for ( ; i < kTestSize - 1; i++) {
+    farmhashntTest::Dump(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    farmhashntTest::Dump(0, i);
+  }
+  farmhashntTest::Dump(0, kDataSize);
+  cout << "};\n";
+}
+#endif
+#ifndef FARMHASH_SELF_TEST_GUARD
+#define FARMHASH_SELF_TEST_GUARD
+#include <cstdio>
+#include <iostream>
+#include <string.h>
+
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::hex;
+
+static const uint64_t kSeed0 = 1234567;
+static const uint64_t kSeed1 = k0;
+static const int kDataSize = 1 << 20;
+static const int kTestSize = 300;
+#define kSeed128 Uint128(kSeed0, kSeed1)
+
+static char data[kDataSize];
+
+static int completed_self_tests = 0;
+static int errors = 0;
+
+// Initialize data to pseudorandom values.
+void Setup() {
+  if (completed_self_tests == 0) {
+    uint64_t a = 9;
+    uint64_t b = 777;
+    for (int i = 0; i < kDataSize; i++) {
+      a += b;
+      b += a;
+      a = (a ^ (a >> 41)) * k0;
+      b = (b ^ (b >> 41)) * k0 + i;
+      uint8_t u = b >> 37;
+      memcpy(data + i, &u, 1);  // uint8_t -> char
+    }
+  }
+}
+
+int NoteErrors() {
+#define NUM_SELF_TESTS 9
+  if (++completed_self_tests == NUM_SELF_TESTS)
+    std::exit(errors > 0);
+  return errors;
+}
+
+template <typename T> inline bool IsNonZero(T x) {
+  return x != 0;
+}
+
+template <> inline bool IsNonZero<uint128_t>(uint128_t x) {
+  return x != Uint128(0, 0);
+}
+
+#endif  // FARMHASH_SELF_TEST_GUARD
+
+namespace farmhashsaTest {
+
+uint32_t CreateSeed(int offset, int salt) {
+  uint32_t h = static_cast<uint32_t>(salt & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h += static_cast<uint32_t>(offset & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  return h;
+}
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+#define SEED CreateSeed(offset, -1)
+#define SEED0 CreateSeed(offset, 0)
+#define SEED1 CreateSeed(offset, 1)
+
+#undef TESTING
+#define TESTING 1
+#if TESTING
+uint32_t expected[] = {
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+3696677242u,
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+};
+
+// Return false only if offset is -1 and a spot check of 3 hashes all yield 0.
+bool Test(int offset, int len = 0) {
+#undef Check
+#undef IsAlive
+
+#define Check(x) do {                                                   \
+  const uint32_t actual = (x), e = expected[index++];                   \
+  bool ok = actual == e;                                                \
+  if (!ok) {                                                            \
+    cerr << "expected " << hex << e << " but got " << actual << endl;   \
+    ++errors;                                                           \
+  }                                                                     \
+  assert(ok);                                                           \
+} while (0)
+
+#define IsAlive(x) do { alive += IsNonZero(x); } while (0)
+
+  // After the following line is where the uses of "Check" and such will go.
+  static int index = 0;
+if (offset == -1) { int alive = 0; IsAlive(farmhashsa::Hash32WithSeed(data, len++, SEED)); IsAlive(farmhashsa::Hash32(data, len++)); IsAlive(farmhashsa::Hash32(data, len++)); len -= 3; return alive > 0; }
+Check(farmhashsa::Hash32WithSeed(data + offset, len, SEED));
+Check(farmhashsa::Hash32(data + offset, len));
+
+  return true;
+#undef Check
+#undef IsAlive
+}
+
+int RunTest() {
+  Setup();
+  int i = 0;
+  cout << "Running farmhashsaTest";
+  if (!Test(-1)) {
+    cout << "... Unavailable\n";
+    return NoteErrors();
+  }
+  // Good.  The function is attempting to hash, so run the full test.
+  int errors_prior_to_test = errors;
+  for ( ; i < kTestSize - 1; i++) {
+    Test(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    Test(0, i);
+  }
+  Test(0, kDataSize);
+  cout << (errors == errors_prior_to_test ? "... OK\n" : "... Failed\n");
+  return NoteErrors();
+}
+
+#else
+
+// After the following line is where the code to print hash codes will go.
+void Dump(int offset, int len) {
+cout << farmhashsa::Hash32WithSeed(data + offset, len, SEED) << "u," << endl;
+cout << farmhashsa::Hash32(data + offset, len) << "u," << endl;
+}
+
+#endif
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+
+}  // namespace farmhashsaTest
+
+#if TESTING
+
+static int farmhashsaTestResult = farmhashsaTest::RunTest();
+
+#else
+int main(int argc, char** argv) {
+  Setup();
+  cout << "uint32_t expected[] = {\n";
+  int i = 0;
+  for ( ; i < kTestSize - 1; i++) {
+    farmhashsaTest::Dump(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    farmhashsaTest::Dump(0, i);
+  }
+  farmhashsaTest::Dump(0, kDataSize);
+  cout << "};\n";
+}
+#endif
+#ifndef FARMHASH_SELF_TEST_GUARD
+#define FARMHASH_SELF_TEST_GUARD
+#include <cstdio>
+#include <iostream>
+#include <string.h>
+
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::hex;
+
+static const uint64_t kSeed0 = 1234567;
+static const uint64_t kSeed1 = k0;
+static const int kDataSize = 1 << 20;
+static const int kTestSize = 300;
+#define kSeed128 Uint128(kSeed0, kSeed1)
+
+static char data[kDataSize];
+
+static int completed_self_tests = 0;
+static int errors = 0;
+
+// Initialize data to pseudorandom values.
+void Setup() {
+  if (completed_self_tests == 0) {
+    uint64_t a = 9;
+    uint64_t b = 777;
+    for (int i = 0; i < kDataSize; i++) {
+      a += b;
+      b += a;
+      a = (a ^ (a >> 41)) * k0;
+      b = (b ^ (b >> 41)) * k0 + i;
+      uint8_t u = b >> 37;
+      memcpy(data + i, &u, 1);  // uint8_t -> char
+    }
+  }
+}
+
+int NoteErrors() {
+#define NUM_SELF_TESTS 9
+  if (++completed_self_tests == NUM_SELF_TESTS)
+    std::exit(errors > 0);
+  return errors;
+}
+
+template <typename T> inline bool IsNonZero(T x) {
+  return x != 0;
+}
+
+template <> inline bool IsNonZero<uint128_t>(uint128_t x) {
+  return x != Uint128(0, 0);
+}
+
+#endif  // FARMHASH_SELF_TEST_GUARD
+
+namespace farmhashsuTest {
+
+uint32_t CreateSeed(int offset, int salt) {
+  uint32_t h = static_cast<uint32_t>(salt & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h += static_cast<uint32_t>(offset & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  return h;
+}
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+#define SEED CreateSeed(offset, -1)
+#define SEED0 CreateSeed(offset, 0)
+#define SEED1 CreateSeed(offset, 1)
+
+#undef TESTING
+#define TESTING 1
+#if TESTING
+uint32_t expected[] = {
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+3696677242u,
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+};
+
+// Return false only if offset is -1 and a spot check of 3 hashes all yield 0.
+bool Test(int offset, int len = 0) {
+#undef Check
+#undef IsAlive
+
+#define Check(x) do {                                                   \
+  const uint32_t actual = (x), e = expected[index++];                   \
+  bool ok = actual == e;                                                \
+  if (!ok) {                                                            \
+    cerr << "expected " << hex << e << " but got " << actual << endl;   \
+    ++errors;                                                           \
+  }                                                                     \
+  assert(ok);                                                           \
+} while (0)
+
+#define IsAlive(x) do { alive += IsNonZero(x); } while (0)
+
+  // After the following line is where the uses of "Check" and such will go.
+  static int index = 0;
+if (offset == -1) { int alive = 0; IsAlive(farmhashsu::Hash32WithSeed(data, len++, SEED)); IsAlive(farmhashsu::Hash32(data, len++)); IsAlive(farmhashsu::Hash32(data, len++)); len -= 3; return alive > 0; }
+Check(farmhashsu::Hash32WithSeed(data + offset, len, SEED));
+Check(farmhashsu::Hash32(data + offset, len));
+
+  return true;
+#undef Check
+#undef IsAlive
+}
+
+int RunTest() {
+  Setup();
+  int i = 0;
+  cout << "Running farmhashsuTest";
+  if (!Test(-1)) {
+    cout << "... Unavailable\n";
+    return NoteErrors();
+  }
+  // Good.  The function is attempting to hash, so run the full test.
+  int errors_prior_to_test = errors;
+  for ( ; i < kTestSize - 1; i++) {
+    Test(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    Test(0, i);
+  }
+  Test(0, kDataSize);
+  cout << (errors == errors_prior_to_test ? "... OK\n" : "... Failed\n");
+  return NoteErrors();
+}
+
+#else
+
+// After the following line is where the code to print hash codes will go.
+void Dump(int offset, int len) {
+cout << farmhashsu::Hash32WithSeed(data + offset, len, SEED) << "u," << endl;
+cout << farmhashsu::Hash32(data + offset, len) << "u," << endl;
+}
+
+#endif
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+
+}  // namespace farmhashsuTest
+
+#if TESTING
+
+static int farmhashsuTestResult = farmhashsuTest::RunTest();
+
+#else
+int main(int argc, char** argv) {
+  Setup();
+  cout << "uint32_t expected[] = {\n";
+  int i = 0;
+  for ( ; i < kTestSize - 1; i++) {
+    farmhashsuTest::Dump(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    farmhashsuTest::Dump(0, i);
+  }
+  farmhashsuTest::Dump(0, kDataSize);
+  cout << "};\n";
+}
+#endif
+#ifndef FARMHASH_SELF_TEST_GUARD
+#define FARMHASH_SELF_TEST_GUARD
+#include <cstdio>
+#include <iostream>
+#include <string.h>
+
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::hex;
+
+static const uint64_t kSeed0 = 1234567;
+static const uint64_t kSeed1 = k0;
+static const int kDataSize = 1 << 20;
+static const int kTestSize = 300;
+#define kSeed128 Uint128(kSeed0, kSeed1)
+
+static char data[kDataSize];
+
+static int completed_self_tests = 0;
+static int errors = 0;
+
+// Initialize data to pseudorandom values.
+void Setup() {
+  if (completed_self_tests == 0) {
+    uint64_t a = 9;
+    uint64_t b = 777;
+    for (int i = 0; i < kDataSize; i++) {
+      a += b;
+      b += a;
+      a = (a ^ (a >> 41)) * k0;
+      b = (b ^ (b >> 41)) * k0 + i;
+      uint8_t u = b >> 37;
+      memcpy(data + i, &u, 1);  // uint8_t -> char
+    }
+  }
+}
+
+int NoteErrors() {
+#define NUM_SELF_TESTS 9
+  if (++completed_self_tests == NUM_SELF_TESTS)
+    std::exit(errors > 0);
+  return errors;
+}
+
+template <typename T> inline bool IsNonZero(T x) {
+  return x != 0;
+}
+
+template <> inline bool IsNonZero<uint128_t>(uint128_t x) {
+  return x != Uint128(0, 0);
+}
+
+#endif  // FARMHASH_SELF_TEST_GUARD
+
+namespace farmhashteTest {
+
+uint32_t CreateSeed(int offset, int salt) {
+  uint32_t h = static_cast<uint32_t>(salt & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h += static_cast<uint32_t>(offset & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  return h;
+}
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+#define SEED CreateSeed(offset, -1)
+#define SEED0 CreateSeed(offset, 0)
+#define SEED1 CreateSeed(offset, 1)
+
+#undef TESTING
+#define TESTING 1
+#if TESTING
+uint32_t expected[] = {
+1140953930u, 861465670u,
+3277735313u, 2681724312u,
+2598464059u, 797982799u,
+890626835u, 800175912u,
+2603993599u, 921001710u,
+1410420968u, 2134990486u,
+3283896453u, 1867689945u,
+2914424215u, 2244477846u,
+255297188u, 2992121793u,
+1110588164u, 4186314283u,
+161451183u, 3943596029u,
+4019337850u, 452431531u,
+283198166u, 2741341286u,
+3379021470u, 2557197665u,
+299850021u, 2532580744u,
+452473466u, 1706958772u,
+1298374911u, 3099673830u,
+2199864459u, 3696623795u,
+236935126u, 2976578695u,
+4055299123u, 3281581178u,
+1053458494u, 1882212500u,
+2305012065u, 2169731866u,
+3456121707u, 275903667u,
+458884671u, 3033004529u,
+3058973506u, 2379411653u,
+1898235244u, 1402319660u,
+2700149065u, 2699376854u,
+147814787u, 720739346u,
+2433714046u, 4222949502u,
+4220361840u, 1712034059u,
+3425469811u, 3690733394u,
+4148372108u, 1330324210u,
+594028478u, 2921867846u,
+1635026870u, 192883107u,
+780716741u, 1728752234u,
+3280331829u, 326029180u,
+3969463346u, 1436364519u,
+393215742u, 3349570000u,
+3824583307u, 1612122221u,
+2859809759u, 3808705738u,
+1379537552u, 1646032583u,
+2233466664u, 1432476832u,
+4023053163u, 2650381482u,
+2052294713u, 3552092450u,
+1628777059u, 1499109081u,
+3476440786u, 3829307897u,
+2960536756u, 1554038301u,
+1145519619u, 3190844552u,
+2902102606u, 3600725550u,
+237495366u, 540224401u,
+65721842u, 489963606u,
+1448662590u, 397635823u,
+1596489240u, 1562872448u,
+1790705123u, 2128624475u,
+180854224u, 2604346966u,
+1435705557u, 1262831810u,
+155445229u, 1672724608u,
+1669465176u, 1341975128u,
+663607706u, 2077310004u,
+3610042449u, 1911523866u,
+1043692997u, 1454396064u,
+2563776023u, 294527927u,
+1099072299u, 1389770549u,
+703505868u, 678706990u,
+2952353448u, 2026137563u,
+3603803785u, 629449419u,
+1933894405u, 3043213226u,
+226132789u, 2489287368u,
+1552847036u, 645684964u,
+3828089804u, 3632594520u,
+187883449u, 230403464u,
+3151491850u, 3272648435u,
+3729087873u, 1303930448u,
+2002861219u, 165370827u,
+916494250u, 1230085527u,
+3103338579u, 3064290191u,
+3807265751u, 3628174014u,
+231181488u, 851743255u,
+2295806711u, 1781190011u,
+2988893883u, 1554380634u,
+1142264800u, 3667013118u,
+1968445277u, 315203929u,
+2638023604u, 2290487377u,
+732137533u, 1909203251u,
+440398219u, 1891630171u,
+1380301172u, 1498556724u,
+4072067757u, 4165088768u,
+4204318635u, 441430649u,
+3931792696u, 197618179u,
+956300927u, 914413116u,
+3010839769u, 2837339569u,
+2148126371u, 1913303225u,
+3074915312u, 3117299654u,
+4139181436u, 2993479124u,
+3178848746u, 1357272220u,
+1438494951u, 507436733u,
+667183474u, 2084369203u,
+3854939912u, 1413396341u,
+126024219u, 146044391u,
+1016656857u, 3022024459u,
+3254014218u, 429095991u,
+990500595u, 3056862311u,
+985653208u, 1718653828u,
+623071693u, 366414107u,
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+3047342438u, 2991127487u,
+3120876698u, 1684583131u,
+3638043310u, 1170404994u,
+863214540u, 1087193030u,
+199124911u, 520792961u,
+3169775996u, 1577421232u,
+3331828431u, 1013201099u,
+1716848157u, 4033596884u,
+1770708857u, 4229339322u,
+1146169032u, 1434258493u,
+3824360466u, 3242407770u,
+1926419493u, 2649785113u,
+872586426u, 762243036u,
+2736953692u, 816692935u,
+1571283333u, 3555213933u,
+2266795890u, 3781899767u,
+4290630595u, 517646945u,
+3006163611u, 2180594090u,
+959214578u, 558910384u,
+1283799121u, 3047062993u,
+3830962609u, 2391606125u,
+3544509313u, 622325861u,
+834785312u, 382936554u,
+1421463872u, 788479970u,
+1825135056u, 2725923798u,
+580988377u, 2826990641u,
+247825043u, 3167748333u,
+812546227u, 2506885666u,
+2584372201u, 1758123094u,
+1891789696u, 389974094u,
+345313518u, 2022370576u,
+3886113119u, 3338548567u,
+1083486947u, 2583576230u,
+1776047957u, 1771384107u,
+3604937815u, 3198590202u,
+3027522813u, 4155628142u,
+4232136669u, 427759438u,
+4244322689u, 542201663u,
+1549591985u, 2856634168u,
+556609672u, 45845311u,
+1175961330u, 3948351189u,
+4165739882u, 4194218315u,
+1634635545u, 4151937410u,
+713127376u, 1467786451u,
+1327394015u, 2743592929u,
+2638154051u, 810082938u,
+3077742128u, 1062268187u,
+4084325664u, 3810665822u,
+3735739145u, 2794294783u,
+2335576331u, 2560479831u,
+690240711u, 997658837u,
+2442302747u, 3948961926u,
+3958366652u, 3067277639u,
+2059157774u, 1211737169u,
+1516711748u, 2339636583u,
+4188504038u, 59581167u,
+2767897792u, 1389679610u,
+2658147000u, 2643979752u,
+3758739543u, 4189944477u,
+1454470782u, 100876854u,
+2995362413u, 118817200u,
+3252925478u, 2062343506u,
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+};
+
+// Return false only if offset is -1 and a spot check of 3 hashes all yield 0.
+bool Test(int offset, int len = 0) {
+#undef Check
+#undef IsAlive
+
+#define Check(x) do {                                                   \
+  const uint32_t actual = (x), e = expected[index++];                   \
+  bool ok = actual == e;                                                \
+  if (!ok) {                                                            \
+    cerr << "expected " << hex << e << " but got " << actual << endl;   \
+    ++errors;                                                           \
+  }                                                                     \
+  assert(ok);                                                           \
+} while (0)
+
+#define IsAlive(x) do { alive += IsNonZero(x); } while (0)
+
+  // After the following line is where the uses of "Check" and such will go.
+  static int index = 0;
+if (offset == -1) { int alive = 0; { uint64_t h = farmhashte::Hash64WithSeeds(data, len++, SEED0, SEED1); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } { uint64_t h = farmhashte::Hash64WithSeed(data, len++, SEED); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } { uint64_t h = farmhashte::Hash64(data, len++); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } len -= 3; return alive > 0; }
+{ uint64_t h = farmhashte::Hash64WithSeeds(data + offset, len, SEED0, SEED1); Check(h >> 32); Check((h << 32) >> 32); }
+{ uint64_t h = farmhashte::Hash64WithSeed(data + offset, len, SEED); Check(h >> 32); Check((h << 32) >> 32); }
+{ uint64_t h = farmhashte::Hash64(data + offset, len); Check(h >> 32); Check((h << 32) >> 32); }
+
+  return true;
+#undef Check
+#undef IsAlive
+}
+
+int RunTest() {
+  Setup();
+  int i = 0;
+  cout << "Running farmhashteTest";
+  if (!Test(-1)) {
+    cout << "... Unavailable\n";
+    return NoteErrors();
+  }
+  // Good.  The function is attempting to hash, so run the full test.
+  int errors_prior_to_test = errors;
+  for ( ; i < kTestSize - 1; i++) {
+    Test(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    Test(0, i);
+  }
+  Test(0, kDataSize);
+  cout << (errors == errors_prior_to_test ? "... OK\n" : "... Failed\n");
+  return NoteErrors();
+}
+
+#else
+
+// After the following line is where the code to print hash codes will go.
+void Dump(int offset, int len) {
+{ uint64_t h = farmhashte::Hash64WithSeeds(data + offset, len, SEED0, SEED1); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+{ uint64_t h = farmhashte::Hash64WithSeed(data + offset, len, SEED); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+{ uint64_t h = farmhashte::Hash64(data + offset, len); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+}
+
+#endif
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+
+}  // namespace farmhashteTest
+
+#if TESTING
+
+static int farmhashteTestResult = farmhashteTest::RunTest();
+
+#else
+int main(int argc, char** argv) {
+  Setup();
+  cout << "uint32_t expected[] = {\n";
+  int i = 0;
+  for ( ; i < kTestSize - 1; i++) {
+    farmhashteTest::Dump(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    farmhashteTest::Dump(0, i);
+  }
+  farmhashteTest::Dump(0, kDataSize);
+  cout << "};\n";
+}
+#endif
+#ifndef FARMHASH_SELF_TEST_GUARD
+#define FARMHASH_SELF_TEST_GUARD
+#include <cstdio>
+#include <iostream>
+#include <string.h>
+
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::hex;
+
+static const uint64_t kSeed0 = 1234567;
+static const uint64_t kSeed1 = k0;
+static const int kDataSize = 1 << 20;
+static const int kTestSize = 300;
+#define kSeed128 Uint128(kSeed0, kSeed1)
+
+static char data[kDataSize];
+
+static int completed_self_tests = 0;
+static int errors = 0;
+
+// Initialize data to pseudorandom values.
+void Setup() {
+  if (completed_self_tests == 0) {
+    uint64_t a = 9;
+    uint64_t b = 777;
+    for (int i = 0; i < kDataSize; i++) {
+      a += b;
+      b += a;
+      a = (a ^ (a >> 41)) * k0;
+      b = (b ^ (b >> 41)) * k0 + i;
+      uint8_t u = b >> 37;
+      memcpy(data + i, &u, 1);  // uint8_t -> char
+    }
+  }
+}
+
+int NoteErrors() {
+#define NUM_SELF_TESTS 9
+  if (++completed_self_tests == NUM_SELF_TESTS)
+    std::exit(errors > 0);
+  return errors;
+}
+
+template <typename T> inline bool IsNonZero(T x) {
+  return x != 0;
+}
+
+template <> inline bool IsNonZero<uint128_t>(uint128_t x) {
+  return x != Uint128(0, 0);
+}
+
+#endif  // FARMHASH_SELF_TEST_GUARD
+
+namespace farmhashuoTest {
+
+uint32_t CreateSeed(int offset, int salt) {
+  uint32_t h = static_cast<uint32_t>(salt & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h += static_cast<uint32_t>(offset & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  return h;
+}
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+#define SEED CreateSeed(offset, -1)
+#define SEED0 CreateSeed(offset, 0)
+#define SEED1 CreateSeed(offset, 1)
+
+#undef TESTING
+#define TESTING 1
+#if TESTING
+uint32_t expected[] = {
+3277735313u, 2681724312u,
+2598464059u, 797982799u,
+2603993599u, 921001710u,
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+3674375989u, 1387729170u,
+568650985u, 951677556u,
+4213877384u, 2721005055u,
+1678669911u, 66786703u,
+2273631661u, 1149351924u,
+246723096u, 1895026827u,
+3810605772u, 3711056516u,
+2080120290u, 3638638708u,
+2915672708u, 2263003308u,
+1976115991u, 3448840877u,
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+3932046135u, 542648229u,
+162888005u, 1669710469u,
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+3817492747u, 584127807u,
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+1215981925u, 3227517889u,
+3269061963u, 4037515364u,
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+3691719535u, 2958853053u,
+466635014u, 2277292580u,
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+2154809766u, 3672399742u,
+76727603u, 4198182186u,
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+2908490783u, 251085588u,
+830410677u, 3172220325u,
+3897208579u, 1940535730u,
+151909546u, 2384458112u,
+};
+
+// Return false only if offset is -1 and a spot check of 3 hashes all yield 0.
+bool Test(int offset, int len = 0) {
+#undef Check
+#undef IsAlive
+
+#define Check(x) do {                                                   \
+  const uint32_t actual = (x), e = expected[index++];                   \
+  bool ok = actual == e;                                                \
+  if (!ok) {                                                            \
+    cerr << "expected " << hex << e << " but got " << actual << endl;   \
+    ++errors;                                                           \
+  }                                                                     \
+  assert(ok);                                                           \
+} while (0)
+
+#define IsAlive(x) do { alive += IsNonZero(x); } while (0)
+
+  // After the following line is where the uses of "Check" and such will go.
+  static int index = 0;
+if (offset == -1) { int alive = 0; { uint64_t h = farmhashuo::Hash64WithSeed(data, len++, SEED); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } { uint64_t h = farmhashuo::Hash64(data, len++); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } { uint64_t h = farmhashuo::Hash64(data, len++); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } len -= 3; return alive > 0; }
+{ uint64_t h = farmhashuo::Hash64WithSeed(data + offset, len, SEED); Check(h >> 32); Check((h << 32) >> 32); }
+{ uint64_t h = farmhashuo::Hash64(data + offset, len); Check(h >> 32); Check((h << 32) >> 32); }
+
+  return true;
+#undef Check
+#undef IsAlive
+}
+
+int RunTest() {
+  Setup();
+  int i = 0;
+  cout << "Running farmhashuoTest";
+  if (!Test(-1)) {
+    cout << "... Unavailable\n";
+    return NoteErrors();
+  }
+  // Good.  The function is attempting to hash, so run the full test.
+  int errors_prior_to_test = errors;
+  for ( ; i < kTestSize - 1; i++) {
+    Test(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    Test(0, i);
+  }
+  Test(0, kDataSize);
+  cout << (errors == errors_prior_to_test ? "... OK\n" : "... Failed\n");
+  return NoteErrors();
+}
+
+#else
+
+// After the following line is where the code to print hash codes will go.
+void Dump(int offset, int len) {
+{ uint64_t h = farmhashuo::Hash64WithSeed(data + offset, len, SEED); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+{ uint64_t h = farmhashuo::Hash64(data + offset, len); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+}
+
+#endif
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+
+}  // namespace farmhashuoTest
+
+#if TESTING
+
+static int farmhashuoTestResult = farmhashuoTest::RunTest();
+
+#else
+int main(int argc, char** argv) {
+  Setup();
+  cout << "uint32_t expected[] = {\n";
+  int i = 0;
+  for ( ; i < kTestSize - 1; i++) {
+    farmhashuoTest::Dump(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    farmhashuoTest::Dump(0, i);
+  }
+  farmhashuoTest::Dump(0, kDataSize);
+  cout << "};\n";
+}
+#endif
+#ifndef FARMHASH_SELF_TEST_GUARD
+#define FARMHASH_SELF_TEST_GUARD
+#include <cstdio>
+#include <iostream>
+#include <string.h>
+
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::hex;
+
+static const uint64_t kSeed0 = 1234567;
+static const uint64_t kSeed1 = k0;
+static const int kDataSize = 1 << 20;
+static const int kTestSize = 300;
+#define kSeed128 Uint128(kSeed0, kSeed1)
+
+static char data[kDataSize];
+
+static int completed_self_tests = 0;
+static int errors = 0;
+
+// Initialize data to pseudorandom values.
+void Setup() {
+  if (completed_self_tests == 0) {
+    uint64_t a = 9;
+    uint64_t b = 777;
+    for (int i = 0; i < kDataSize; i++) {
+      a += b;
+      b += a;
+      a = (a ^ (a >> 41)) * k0;
+      b = (b ^ (b >> 41)) * k0 + i;
+      uint8_t u = b >> 37;
+      memcpy(data + i, &u, 1);  // uint8_t -> char
+    }
+  }
+}
+
+int NoteErrors() {
+#define NUM_SELF_TESTS 9
+  if (++completed_self_tests == NUM_SELF_TESTS)
+    std::exit(errors > 0);
+  return errors;
+}
+
+template <typename T> inline bool IsNonZero(T x) {
+  return x != 0;
+}
+
+template <> inline bool IsNonZero<uint128_t>(uint128_t x) {
+  return x != Uint128(0, 0);
+}
+
+#endif  // FARMHASH_SELF_TEST_GUARD
+
+namespace farmhashxoTest {
+
+uint32_t CreateSeed(int offset, int salt) {
+  uint32_t h = static_cast<uint32_t>(salt & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h += static_cast<uint32_t>(offset & 0xffffffff);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  h = h * c1;
+  h ^= (h >> 17);
+  return h;
+}
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+#define SEED CreateSeed(offset, -1)
+#define SEED0 CreateSeed(offset, 0)
+#define SEED1 CreateSeed(offset, 1)
+
+#undef TESTING
+#define TESTING 1
+#if TESTING
+uint32_t expected[] = {
+1140953930u, 861465670u,
+3277735313u, 2681724312u,
+2598464059u, 797982799u,
+890626835u, 800175912u,
+2603993599u, 921001710u,
+1410420968u, 2134990486u,
+3283896453u, 1867689945u,
+2914424215u, 2244477846u,
+255297188u, 2992121793u,
+1110588164u, 4186314283u,
+161451183u, 3943596029u,
+4019337850u, 452431531u,
+283198166u, 2741341286u,
+3379021470u, 2557197665u,
+299850021u, 2532580744u,
+452473466u, 1706958772u,
+1298374911u, 3099673830u,
+2199864459u, 3696623795u,
+236935126u, 2976578695u,
+4055299123u, 3281581178u,
+1053458494u, 1882212500u,
+2305012065u, 2169731866u,
+3456121707u, 275903667u,
+458884671u, 3033004529u,
+3058973506u, 2379411653u,
+1898235244u, 1402319660u,
+2700149065u, 2699376854u,
+147814787u, 720739346u,
+2433714046u, 4222949502u,
+4220361840u, 1712034059u,
+3425469811u, 3690733394u,
+4148372108u, 1330324210u,
+594028478u, 2921867846u,
+1635026870u, 192883107u,
+780716741u, 1728752234u,
+3280331829u, 326029180u,
+3969463346u, 1436364519u,
+393215742u, 3349570000u,
+3824583307u, 1612122221u,
+2859809759u, 3808705738u,
+1379537552u, 1646032583u,
+2233466664u, 1432476832u,
+4023053163u, 2650381482u,
+2052294713u, 3552092450u,
+1628777059u, 1499109081u,
+3476440786u, 3829307897u,
+2960536756u, 1554038301u,
+1145519619u, 3190844552u,
+2902102606u, 3600725550u,
+237495366u, 540224401u,
+65721842u, 489963606u,
+1448662590u, 397635823u,
+1596489240u, 1562872448u,
+1790705123u, 2128624475u,
+180854224u, 2604346966u,
+1435705557u, 1262831810u,
+155445229u, 1672724608u,
+1669465176u, 1341975128u,
+663607706u, 2077310004u,
+3610042449u, 1911523866u,
+1043692997u, 1454396064u,
+2563776023u, 294527927u,
+1099072299u, 1389770549u,
+703505868u, 678706990u,
+2952353448u, 2026137563u,
+3603803785u, 629449419u,
+1933894405u, 3043213226u,
+226132789u, 2489287368u,
+1552847036u, 645684964u,
+3828089804u, 3632594520u,
+187883449u, 230403464u,
+3151491850u, 3272648435u,
+3729087873u, 1303930448u,
+2002861219u, 165370827u,
+916494250u, 1230085527u,
+3103338579u, 3064290191u,
+3807265751u, 3628174014u,
+231181488u, 851743255u,
+2295806711u, 1781190011u,
+2988893883u, 1554380634u,
+1142264800u, 3667013118u,
+1968445277u, 315203929u,
+2638023604u, 2290487377u,
+732137533u, 1909203251u,
+440398219u, 1891630171u,
+1380301172u, 1498556724u,
+4072067757u, 4165088768u,
+4204318635u, 441430649u,
+3931792696u, 197618179u,
+956300927u, 914413116u,
+3010839769u, 2837339569u,
+2148126371u, 1913303225u,
+3074915312u, 3117299654u,
+4139181436u, 2993479124u,
+3178848746u, 1357272220u,
+1438494951u, 507436733u,
+667183474u, 2084369203u,
+3854939912u, 1413396341u,
+126024219u, 146044391u,
+1016656857u, 3022024459u,
+3254014218u, 429095991u,
+990500595u, 3056862311u,
+985653208u, 1718653828u,
+623071693u, 366414107u,
+1771289760u, 2293458109u,
+3047342438u, 2991127487u,
+3120876698u, 1684583131u,
+3638043310u, 1170404994u,
+863214540u, 1087193030u,
+199124911u, 520792961u,
+3169775996u, 1577421232u,
+3331828431u, 1013201099u,
+1716848157u, 4033596884u,
+1770708857u, 4229339322u,
+1146169032u, 1434258493u,
+3824360466u, 3242407770u,
+1926419493u, 2649785113u,
+872586426u, 762243036u,
+2736953692u, 816692935u,
+1571283333u, 3555213933u,
+2266795890u, 3781899767u,
+4290630595u, 517646945u,
+3006163611u, 2180594090u,
+959214578u, 558910384u,
+1283799121u, 3047062993u,
+3830962609u, 2391606125u,
+3544509313u, 622325861u,
+834785312u, 382936554u,
+1421463872u, 788479970u,
+1825135056u, 2725923798u,
+580988377u, 2826990641u,
+247825043u, 3167748333u,
+812546227u, 2506885666u,
+2584372201u, 1758123094u,
+1891789696u, 389974094u,
+345313518u, 2022370576u,
+3886113119u, 3338548567u,
+1083486947u, 2583576230u,
+1776047957u, 1771384107u,
+3604937815u, 3198590202u,
+3027522813u, 4155628142u,
+4232136669u, 427759438u,
+4244322689u, 542201663u,
+1549591985u, 2856634168u,
+556609672u, 45845311u,
+1175961330u, 3948351189u,
+4165739882u, 4194218315u,
+1634635545u, 4151937410u,
+713127376u, 1467786451u,
+1327394015u, 2743592929u,
+2638154051u, 810082938u,
+3077742128u, 1062268187u,
+4084325664u, 3810665822u,
+3735739145u, 2794294783u,
+2335576331u, 2560479831u,
+690240711u, 997658837u,
+2442302747u, 3948961926u,
+3958366652u, 3067277639u,
+2059157774u, 1211737169u,
+1516711748u, 2339636583u,
+4188504038u, 59581167u,
+2767897792u, 1389679610u,
+2658147000u, 2643979752u,
+3758739543u, 4189944477u,
+1454470782u, 100876854u,
+2995362413u, 118817200u,
+3252925478u, 2062343506u,
+2804483644u, 3088828656u,
+1231633714u, 4168280671u,
+2931588131u, 3284356565u,
+1255909792u, 3130054947u,
+4173605289u, 1407328702u,
+1677744031u, 3532596884u,
+3162657845u, 3887208531u,
+2256541290u, 3459463480u,
+3740979556u, 259034107u,
+392987633u, 3233195759u,
+3606709555u, 3424793077u,
+315836068u, 3200749877u,
+4065431359u, 760633989u,
+2982018998u, 1811050648u,
+234531934u, 1115203611u,
+3897494162u, 1516407838u,
+1603559457u, 323296368u,
+2632963283u, 1778459926u,
+2879836826u, 2146672889u,
+3486330348u, 492621815u,
+1231665285u, 2457048126u,
+3438440082u, 2217471853u,
+3355404249u, 3275550588u,
+1052645068u, 862072556u,
+4110617119u, 3745267835u,
+2657392572u, 4279236653u,
+1688445808u, 701920051u,
+956734128u, 581695350u,
+3157862788u, 2585726058u,
+1192588249u, 1410111809u,
+1651193125u, 3326135446u,
+1073280453u, 97376972u,
+2513844237u, 2187968410u,
+3976859649u, 4267859263u,
+3429034542u, 564493077u,
+3000537321u, 479241367u,
+3845637831u, 2868987960u,
+51544337u, 1029173765u,
+393624922u, 704325635u,
+2357610553u, 1418509533u,
+2007814586u, 3866658271u,
+3082385053u, 735688735u,
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+};
+
+// Return false only if offset is -1 and a spot check of 3 hashes all yield 0.
+bool Test(int offset, int len = 0) {
+#undef Check
+#undef IsAlive
+
+#define Check(x) do {                                                   \
+  const uint32_t actual = (x), e = expected[index++];                   \
+  bool ok = actual == e;                                                \
+  if (!ok) {                                                            \
+    cerr << "expected " << hex << e << " but got " << actual << endl;   \
+    ++errors;                                                           \
+  }                                                                     \
+  assert(ok);                                                           \
+} while (0)
+
+#define IsAlive(x) do { alive += IsNonZero(x); } while (0)
+
+  // After the following line is where the uses of "Check" and such will go.
+  static int index = 0;
+if (offset == -1) { int alive = 0; { uint64_t h = farmhashxo::Hash64WithSeeds(data, len++, SEED0, SEED1); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } { uint64_t h = farmhashxo::Hash64WithSeed(data, len++, SEED); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } { uint64_t h = farmhashxo::Hash64(data, len++); IsAlive(h >> 32); IsAlive((h << 32) >> 32); } len -= 3; return alive > 0; }
+{ uint64_t h = farmhashxo::Hash64WithSeeds(data + offset, len, SEED0, SEED1); Check(h >> 32); Check((h << 32) >> 32); }
+{ uint64_t h = farmhashxo::Hash64WithSeed(data + offset, len, SEED); Check(h >> 32); Check((h << 32) >> 32); }
+{ uint64_t h = farmhashxo::Hash64(data + offset, len); Check(h >> 32); Check((h << 32) >> 32); }
+
+  return true;
+#undef Check
+#undef IsAlive
+}
+
+int RunTest() {
+  Setup();
+  int i = 0;
+  cout << "Running farmhashxoTest";
+  if (!Test(-1)) {
+    cout << "... Unavailable\n";
+    return NoteErrors();
+  }
+  // Good.  The function is attempting to hash, so run the full test.
+  int errors_prior_to_test = errors;
+  for ( ; i < kTestSize - 1; i++) {
+    Test(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    Test(0, i);
+  }
+  Test(0, kDataSize);
+  cout << (errors == errors_prior_to_test ? "... OK\n" : "... Failed\n");
+  return NoteErrors();
+}
+
+#else
+
+// After the following line is where the code to print hash codes will go.
+void Dump(int offset, int len) {
+{ uint64_t h = farmhashxo::Hash64WithSeeds(data + offset, len, SEED0, SEED1); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+{ uint64_t h = farmhashxo::Hash64WithSeed(data + offset, len, SEED); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+{ uint64_t h = farmhashxo::Hash64(data + offset, len); cout << (h >> 32) << "u, " << ((h << 32) >> 32) << "u," << endl; }
+}
+
+#endif
+
+#undef SEED
+#undef SEED1
+#undef SEED0
+
+}  // namespace farmhashxoTest
+
+#if TESTING
+
+static int farmhashxoTestResult = farmhashxoTest::RunTest();
+
+#else
+int main(int argc, char** argv) {
+  Setup();
+  cout << "uint32_t expected[] = {\n";
+  int i = 0;
+  for ( ; i < kTestSize - 1; i++) {
+    farmhashxoTest::Dump(i * i, i);
+  }
+  for ( ; i < kDataSize; i += i / 7) {
+    farmhashxoTest::Dump(0, i);
+  }
+  farmhashxoTest::Dump(0, kDataSize);
+  cout << "};\n";
+}
+#endif
+
+#endif  // FARMHASHSELFTEST