Remove //net (except for Android test stuff) and sdch

net/base/int128.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef NET_BASE_INT128_H_
-#define NET_BASE_INT128_H_
-
-#include <iosfwd>
-#include "base/basictypes.h"
-#include "net/base/net_export.h"
-
-struct uint128_pod;
-
-// An unsigned 128-bit integer type. Thread-compatible.
-class uint128 {
-public:
-  uint128();  // Sets to 0, but don't trust on this behavior.
-  uint128(uint64 top, uint64 bottom);
-  uint128(int bottom);
-  uint128(uint32 bottom);   // Top 96 bits = 0
-  uint128(uint64 bottom);   // hi_ = 0
-  uint128(const uint128 &val);
-  uint128(const uint128_pod &val);
-
-  void Initialize(uint64 top, uint64 bottom);
-
-  uint128& operator=(const uint128& b);
-
-  // Arithmetic operators.
-  // TODO: division, etc.
-  uint128& operator+=(const uint128& b);
-  uint128& operator-=(const uint128& b);
-  uint128& operator*=(const uint128& b);
-  uint128 operator++(int);
-  uint128 operator--(int);
-  uint128& operator<<=(int);
-  uint128& operator>>=(int);
-  uint128& operator&=(const uint128& b);
-  uint128& operator|=(const uint128& b);
-  uint128& operator^=(const uint128& b);
-  uint128& operator++();
-  uint128& operator--();
-
-  friend uint64 Uint128Low64(const uint128& v);
-  friend uint64 Uint128High64(const uint128& v);
-
-  // We add "std::" to avoid including all of port.h.
-  friend NET_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& o,
-                                                     const uint128& b);
-
-private:
-  // Little-endian memory order optimizations can benefit from
-  // having lo_ first, hi_ last.
-  // See util/endian/endian.h and Load128/Store128 for storing a uint128.
-  uint64        lo_;
-  uint64        hi_;
-
-  // Not implemented, just declared for catching automatic type conversions.
-  uint128(uint8);
-  uint128(uint16);
-  uint128(float v);
-  uint128(double v);
-};
-
-// This is a POD form of uint128 which can be used for static variables which
-// need to be operated on as uint128.
-struct uint128_pod {
-  // Note: The ordering of fields is different than 'class uint128' but the
-  // same as its 2-arg constructor.  This enables more obvious initialization
-  // of static instances, which is the primary reason for this struct in the
-  // first place.  This does not seem to defeat any optimizations wrt
-  // operations involving this struct.
-  uint64 hi;
-  uint64 lo;
-};
-
-NET_EXPORT_PRIVATE extern const uint128_pod kuint128max;
-
-// allow uint128 to be logged
-NET_EXPORT_PRIVATE extern std::ostream& operator<<(std::ostream& o,
-                                                   const uint128& b);
-
-// Methods to access low and high pieces of 128-bit value.
-// Defined externally from uint128 to facilitate conversion
-// to native 128-bit types when compilers support them.
-inline uint64 Uint128Low64(const uint128& v) { return v.lo_; }
-inline uint64 Uint128High64(const uint128& v) { return v.hi_; }
-
-// TODO: perhaps it would be nice to have int128, a signed 128-bit type?
-
-// --------------------------------------------------------------------------
-//                      Implementation details follow
-// --------------------------------------------------------------------------
-inline bool operator==(const uint128& lhs, const uint128& rhs) {
-  return (Uint128Low64(lhs) == Uint128Low64(rhs) &&
-          Uint128High64(lhs) == Uint128High64(rhs));
-}
-inline bool operator!=(const uint128& lhs, const uint128& rhs) {
-  return !(lhs == rhs);
-}
-inline uint128& uint128::operator=(const uint128& b) {
-  lo_ = b.lo_;
-  hi_ = b.hi_;
-  return *this;
-}
-
-inline uint128::uint128(): lo_(0), hi_(0) { }
-inline uint128::uint128(uint64 top, uint64 bottom) : lo_(bottom), hi_(top) { }
-inline uint128::uint128(const uint128 &v) : lo_(v.lo_), hi_(v.hi_) { }
-inline uint128::uint128(const uint128_pod &v) : lo_(v.lo), hi_(v.hi) { }
-inline uint128::uint128(uint64 bottom) : lo_(bottom), hi_(0) { }
-inline uint128::uint128(uint32 bottom) : lo_(bottom), hi_(0) { }
-inline uint128::uint128(int bottom) : lo_(bottom), hi_(0) {
-  if (bottom < 0) {
-    --hi_;
-  }
-}
-inline void uint128::Initialize(uint64 top, uint64 bottom) {
-  hi_ = top;
-  lo_ = bottom;
-}
-
-// Comparison operators.
-
-#define CMP128(op)                                                \
-inline bool operator op(const uint128& lhs, const uint128& rhs) { \
-  return (Uint128High64(lhs) == Uint128High64(rhs)) ?             \
-      (Uint128Low64(lhs) op Uint128Low64(rhs)) :                  \
-      (Uint128High64(lhs) op Uint128High64(rhs));                 \
-}
-
-CMP128(<)
-CMP128(>)
-CMP128(>=)
-CMP128(<=)
-
-#undef CMP128
-
-// Unary operators
-
-inline uint128 operator-(const uint128& val) {
-  const uint64 hi_flip = ~Uint128High64(val);
-  const uint64 lo_flip = ~Uint128Low64(val);
-  const uint64 lo_add = lo_flip + 1;
-  if (lo_add < lo_flip) {
-    return uint128(hi_flip + 1, lo_add);
-  }
-  return uint128(hi_flip, lo_add);
-}
-
-inline bool operator!(const uint128& val) {
-  return !Uint128High64(val) && !Uint128Low64(val);
-}
-
-// Logical operators.
-
-inline uint128 operator~(const uint128& val) {
-  return uint128(~Uint128High64(val), ~Uint128Low64(val));
-}
-
-#define LOGIC128(op)                                                 \
-inline uint128 operator op(const uint128& lhs, const uint128& rhs) { \
-  return uint128(Uint128High64(lhs) op Uint128High64(rhs),           \
-                 Uint128Low64(lhs) op Uint128Low64(rhs));            \
-}
-
-LOGIC128(|)
-LOGIC128(&)
-LOGIC128(^)
-
-#undef LOGIC128
-
-#define LOGICASSIGN128(op)                                   \
-inline uint128& uint128::operator op(const uint128& other) { \
-  hi_ op other.hi_;                                          \
-  lo_ op other.lo_;                                          \
-  return *this;                                              \
-}
-
-LOGICASSIGN128(|=)
-LOGICASSIGN128(&=)
-LOGICASSIGN128(^=)
-
-#undef LOGICASSIGN128
-
-// Shift operators.
-
-inline uint128 operator<<(const uint128& val, int amount) {
-  // uint64 shifts of >= 64 are undefined, so we will need some special-casing.
-  if (amount < 64) {
-    if (amount == 0) {
-      return val;
-    }
-    uint64 new_hi = (Uint128High64(val) << amount) |
-                    (Uint128Low64(val) >> (64 - amount));
-    uint64 new_lo = Uint128Low64(val) << amount;
-    return uint128(new_hi, new_lo);
-  } else if (amount < 128) {
-    return uint128(Uint128Low64(val) << (amount - 64), 0);
-  } else {
-    return uint128(0, 0);
-  }
-}
-
-inline uint128 operator>>(const uint128& val, int amount) {
-  // uint64 shifts of >= 64 are undefined, so we will need some special-casing.
-  if (amount < 64) {
-    if (amount == 0) {
-      return val;
-    }
-    uint64 new_hi = Uint128High64(val) >> amount;
-    uint64 new_lo = (Uint128Low64(val) >> amount) |
-                    (Uint128High64(val) << (64 - amount));
-    return uint128(new_hi, new_lo);
-  } else if (amount < 128) {
-    return uint128(0, Uint128High64(val) >> (amount - 64));
-  } else {
-    return uint128(0, 0);
-  }
-}
-
-inline uint128& uint128::operator<<=(int amount) {
-  // uint64 shifts of >= 64 are undefined, so we will need some special-casing.
-  if (amount < 64) {
-    if (amount != 0) {
-      hi_ = (hi_ << amount) | (lo_ >> (64 - amount));
-      lo_ = lo_ << amount;
-    }
-  } else if (amount < 128) {
-    hi_ = lo_ << (amount - 64);
-    lo_ = 0;
-  } else {
-    hi_ = 0;
-    lo_ = 0;
-  }
-  return *this;
-}
-
-inline uint128& uint128::operator>>=(int amount) {
-  // uint64 shifts of >= 64 are undefined, so we will need some special-casing.
-  if (amount < 64) {
-    if (amount != 0) {
-      lo_ = (lo_ >> amount) | (hi_ << (64 - amount));
-      hi_ = hi_ >> amount;
-    }
-  } else if (amount < 128) {
-    hi_ = 0;
-    lo_ = hi_ >> (amount - 64);
-  } else {
-    hi_ = 0;
-    lo_ = 0;
-  }
-  return *this;
-}
-
-inline uint128 operator+(const uint128& lhs, const uint128& rhs) {
-  return uint128(lhs) += rhs;
-}
-
-inline uint128 operator-(const uint128& lhs, const uint128& rhs) {
-  return uint128(lhs) -= rhs;
-}
-
-inline uint128 operator*(const uint128& lhs, const uint128& rhs) {
-  return uint128(lhs) *= rhs;
-}
-
-inline uint128& uint128::operator+=(const uint128& b) {
-  hi_ += b.hi_;
-  uint64 lolo = lo_ + b.lo_;
-  if (lolo < lo_)
-    ++hi_;
-  lo_ = lolo;
-  return *this;
-}
-
-inline uint128& uint128::operator-=(const uint128& b) {
-  hi_ -= b.hi_;
-  if (b.lo_ > lo_)
-    --hi_;
-  lo_ -= b.lo_;
-  return *this;
-}
-
-inline uint128& uint128::operator*=(const uint128& b) {
-  uint64 a96 = hi_ >> 32;
-  uint64 a64 = hi_ & 0xffffffffu;
-  uint64 a32 = lo_ >> 32;
-  uint64 a00 = lo_ & 0xffffffffu;
-  uint64 b96 = b.hi_ >> 32;
-  uint64 b64 = b.hi_ & 0xffffffffu;
-  uint64 b32 = b.lo_ >> 32;
-  uint64 b00 = b.lo_ & 0xffffffffu;
-  // multiply [a96 .. a00] x [b96 .. b00]
-  // terms higher than c96 disappear off the high side
-  // terms c96 and c64 are safe to ignore carry bit
-  uint64 c96 = a96 * b00 + a64 * b32 + a32 * b64 + a00 * b96;
-  uint64 c64 = a64 * b00 + a32 * b32 + a00 * b64;
-  this->hi_ = (c96 << 32) + c64;
-  this->lo_ = 0;
-  // add terms after this one at a time to capture carry
-  *this += uint128(a32 * b00) << 32;
-  *this += uint128(a00 * b32) << 32;
-  *this += a00 * b00;
-  return *this;
-}
-
-inline uint128 uint128::operator++(int) {
-  uint128 tmp(*this);
-  *this += 1;
-  return tmp;
-}
-
-inline uint128 uint128::operator--(int) {
-  uint128 tmp(*this);
-  *this -= 1;
-  return tmp;
-}
-
-inline uint128& uint128::operator++() {
-  *this += 1;
-  return *this;
-}
-
-inline uint128& uint128::operator--() {
-  *this -= 1;
-  return *this;
-}
-
-#endif  // NET_BASE_INT128_H_