Apply clang-format with Chromium-style without column limit.

third_party/WebKit/Source/wtf/MathExtras.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 37 matching lines @@
 const float piOverTwoFloat = static_cast<float>(M_PI_2);
 
 const double piOverFourDouble = M_PI_4;
 const float piOverFourFloat = static_cast<float>(M_PI_4);
 
 const double twoPiDouble = piDouble * 2.0;
 const float twoPiFloat = piFloat * 2.0f;
 
 #if OS(ANDROID) || COMPILER(MSVC)
 // ANDROID and MSVC's math.h does not currently supply log2 or log2f.
-inline double log2(double num)
-{
-    // This constant is roughly M_LN2, which is not provided by default on Windows and Android.
-    return log(num) / 0.693147180559945309417232121458176568;
+inline double log2(double num) {
+  // This constant is roughly M_LN2, which is not provided by default on Windows and Android.
+  return log(num) / 0.693147180559945309417232121458176568;
 }
 
-inline float log2f(float num)
-{
-    // This constant is roughly M_LN2, which is not provided by default on Windows and Android.
-    return logf(num) / 0.693147180559945309417232121458176568f;
+inline float log2f(float num) {
+  // This constant is roughly M_LN2, which is not provided by default on Windows and Android.
+  return logf(num) / 0.693147180559945309417232121458176568f;
 }
 #endif
 
 #if COMPILER(MSVC)
 
 // VS2013 has most of the math functions now, but we still need to work
 // around various differences in behavior of Inf.
 
 // Work around a bug in Win, where atan2(+-infinity, +-infinity) yields NaN instead of specific values.
-inline double wtf_atan2(double x, double y)
-{
-    double posInf = std::numeric_limits<double>::infinity();
-    double negInf = -std::numeric_limits<double>::infinity();
-    double nan = std::numeric_limits<double>::quiet_NaN();
+inline double wtf_atan2(double x, double y) {
+  double posInf = std::numeric_limits<double>::infinity();
+  double negInf = -std::numeric_limits<double>::infinity();
+  double nan = std::numeric_limits<double>::quiet_NaN();
 
-    double result = nan;
+  double result = nan;
 
-    if (x == posInf && y == posInf)
-        result = piOverFourDouble;
-    else if (x == posInf && y == negInf)
-        result = 3 * piOverFourDouble;
-    else if (x == negInf && y == posInf)
-        result = -piOverFourDouble;
-    else if (x == negInf && y == negInf)
-        result = -3 * piOverFourDouble;
-    else
-        result = ::atan2(x, y);
+  if (x == posInf && y == posInf)
+    result = piOverFourDouble;
+  else if (x == posInf && y == negInf)
+    result = 3 * piOverFourDouble;
+  else if (x == negInf && y == posInf)
+    result = -piOverFourDouble;
+  else if (x == negInf && y == negInf)
+    result = -3 * piOverFourDouble;
+  else
+    result = ::atan2(x, y);
 
-    return result;
+  return result;
 }
 
 // Work around a bug in the Microsoft CRT, where fmod(x, +-infinity) yields NaN instead of x.
-inline double wtf_fmod(double x, double y) { return (!std::isinf(x) && std::isinf(y)) ? x : fmod(x, y); }
+inline double wtf_fmod(double x, double y) {
+  return (!std::isinf(x) && std::isinf(y)) ? x : fmod(x, y);
+}
 
 // Work around a bug in the Microsoft CRT, where pow(NaN, 0) yields NaN instead of 1.
-inline double wtf_pow(double x, double y) { return y == 0 ? 1 : pow(x, y); }
+inline double wtf_pow(double x, double y) {
+  return y == 0 ? 1 : pow(x, y);
+}
 
 #define atan2(x, y) wtf_atan2(x, y)
 #define fmod(x, y) wtf_fmod(x, y)
 #define pow(x, y) wtf_pow(x, y)
 
-#endif // COMPILER(MSVC)
+#endif  // COMPILER(MSVC)
 
-inline double deg2rad(double d)  { return d * piDouble / 180.0; }
-inline double rad2deg(double r)  { return r * 180.0 / piDouble; }
-inline double deg2grad(double d) { return d * 400.0 / 360.0; }
-inline double grad2deg(double g) { return g * 360.0 / 400.0; }
-inline double turn2deg(double t) { return t * 360.0; }
-inline double deg2turn(double d) { return d / 360.0; }
-inline double rad2grad(double r) { return r * 200.0 / piDouble; }
-inline double grad2rad(double g) { return g * piDouble / 200.0; }
-inline double turn2grad(double t) { return t * 400; }
-inline double grad2turn(double g) { return g / 400; }
+inline double deg2rad(double d) {
+  return d * piDouble / 180.0;
+}
+inline double rad2deg(double r) {
+  return r * 180.0 / piDouble;
+}
+inline double deg2grad(double d) {
+  return d * 400.0 / 360.0;
+}
+inline double grad2deg(double g) {
+  return g * 360.0 / 400.0;
+}
+inline double turn2deg(double t) {
+  return t * 360.0;
+}
+inline double deg2turn(double d) {
+  return d / 360.0;
+}
+inline double rad2grad(double r) {
+  return r * 200.0 / piDouble;
+}
+inline double grad2rad(double g) {
+  return g * piDouble / 200.0;
+}
+inline double turn2grad(double t) {
+  return t * 400;
+}
+inline double grad2turn(double g) {
+  return g / 400;
+}
 
-inline float deg2rad(float d)  { return d * piFloat / 180.0f; }
-inline float rad2deg(float r)  { return r * 180.0f / piFloat; }
-inline float deg2grad(float d) { return d * 400.0f / 360.0f; }
-inline float grad2deg(float g) { return g * 360.0f / 400.0f; }
-inline float turn2deg(float t) { return t * 360.0f; }
-inline float deg2turn(float d) { return d / 360.0f; }
-inline float rad2grad(float r) { return r * 200.0f / piFloat; }
-inline float grad2rad(float g) { return g * piFloat / 200.0f; }
-inline float turn2grad(float t) { return t * 400; }
-inline float grad2turn(float g) { return g / 400; }
+inline float deg2rad(float d) {
+  return d * piFloat / 180.0f;
+}
+inline float rad2deg(float r) {
+  return r * 180.0f / piFloat;
+}
+inline float deg2grad(float d) {
+  return d * 400.0f / 360.0f;
+}
+inline float grad2deg(float g) {
+  return g * 360.0f / 400.0f;
+}
+inline float turn2deg(float t) {
+  return t * 360.0f;
+}
+inline float deg2turn(float d) {
+  return d / 360.0f;
+}
+inline float rad2grad(float r) {
+  return r * 200.0f / piFloat;
+}
+inline float grad2rad(float g) {
+  return g * piFloat / 200.0f;
+}
+inline float turn2grad(float t) {
+  return t * 400;
+}
+inline float grad2turn(float g) {
+  return g / 400;
+}
 
 // clampTo() is implemented by templated helper classes (to allow for partial
 // template specialization) as well as several helper functions.
 
 // This helper function can be called when we know that:
 // (1) The type signednesses match so the compiler will not produce signed vs.
 //     unsigned warnings
 // (2) The default type promotions/conversions are sufficient to handle things
 //     correctly
-template<typename LimitType, typename ValueType> inline LimitType clampToDirectComparison(ValueType value, LimitType min, LimitType max)
-{
-    if (value >= max)
-        return max;
-    return (value <= min) ? min : static_cast<LimitType>(value);
+template <typename LimitType, typename ValueType>
+inline LimitType clampToDirectComparison(ValueType value, LimitType min, LimitType max) {
+  if (value >= max)
+    return max;
+  return (value <= min) ? min : static_cast<LimitType>(value);
 }
 
 // For any floating-point limits, or integral limits smaller than long long, we
 // can cast the limits to double without losing precision; then the only cases
 // where |value| can't be represented accurately as a double are the ones where
 // it's outside the limit range anyway.  So doing all comparisons as doubles
 // will give correct results.
 //
 // In some cases, we can get better performance by using
 // clampToDirectComparison().  We use a templated class to switch between these
 // two cases (instead of simply using a conditional within one function) in
 // order to only compile the clampToDirectComparison() code for cases where it
 // will actually be used; this prevents the compiler from emitting warnings
 // about unsafe code (even though we wouldn't actually be executing that code).
-template<bool canUseDirectComparison, typename LimitType, typename ValueType> class ClampToNonLongLongHelper;
-template<typename LimitType, typename ValueType> class ClampToNonLongLongHelper<true, LimitType, ValueType> {
-public:
-    static inline LimitType clampTo(ValueType value, LimitType min, LimitType max)
-    {
-        return clampToDirectComparison(value, min, max);
-    }
+template <bool canUseDirectComparison, typename LimitType, typename ValueType>
+class ClampToNonLongLongHelper;
+template <typename LimitType, typename ValueType>
+class ClampToNonLongLongHelper<true, LimitType, ValueType> {
+ public:
+  static inline LimitType clampTo(ValueType value, LimitType min, LimitType max) {
+    return clampToDirectComparison(value, min, max);
+  }
 };
 
-template<typename LimitType, typename ValueType> class ClampToNonLongLongHelper<false, LimitType, ValueType> {
-public:
-    static inline LimitType clampTo(ValueType value, LimitType min, LimitType max)
-    {
-        const double doubleValue = static_cast<double>(value);
-        if (doubleValue >= static_cast<double>(max))
-            return max;
-        if (doubleValue <= static_cast<double>(min))
-            return min;
-        // If the limit type is integer, we might get better performance by
-        // casting |value| (as opposed to |doubleValue|) to the limit type.
-        return std::numeric_limits<LimitType>::is_integer ? static_cast<LimitType>(value) : static_cast<LimitType>(doubleValue);
-    }
+template <typename LimitType, typename ValueType>
+class ClampToNonLongLongHelper<false, LimitType, ValueType> {
+ public:
+  static inline LimitType clampTo(ValueType value, LimitType min, LimitType max) {
+    const double doubleValue = static_cast<double>(value);
+    if (doubleValue >= static_cast<double>(max))
+      return max;
+    if (doubleValue <= static_cast<double>(min))
+      return min;
+    // If the limit type is integer, we might get better performance by
+    // casting |value| (as opposed to |doubleValue|) to the limit type.
+    return std::numeric_limits<LimitType>::is_integer ? static_cast<LimitType>(value) : static_cast<LimitType>(doubleValue);
+  }
 };
 
 // The unspecialized version of this templated class handles clamping to
 // anything other than [unsigned] long long int limits.  It simply uses the
 // class above to toggle between the "fast" and "safe" clamp implementations.
-template<typename LimitType, typename ValueType> class ClampToHelper {
-public:
-    static inline LimitType clampTo(ValueType value, LimitType min, LimitType max)
-    {
-        // We only use clampToDirectComparison() when the integerness and
-        // signedness of the two types matches.
-        //
-        // If the integerness of the types doesn't match, then at best
-        // clampToDirectComparison() won't be much more efficient than the
-        // cast-everything-to-double method, since we'll need to convert to
-        // floating point anyway; at worst, we risk incorrect results when
-        // clamping a float to a 32-bit integral type due to potential precision
-        // loss.
-        //
-        // If the signedness doesn't match, clampToDirectComparison() will
-        // produce warnings about comparing signed vs. unsigned, which are apt
-        // since negative signed values will be converted to large unsigned ones
-        // and we'll get incorrect results.
-        return ClampToNonLongLongHelper<std::numeric_limits<LimitType>::is_integer == std::numeric_limits<ValueType>::is_integer && std::numeric_limits<LimitType>::is_signed == std::numeric_limits<ValueType>::is_signed, LimitType, ValueType>::clampTo(value, min, max);
-    }
+template <typename LimitType, typename ValueType>
+class ClampToHelper {
+ public:
+  static inline LimitType clampTo(ValueType value, LimitType min, LimitType max) {
+    // We only use clampToDirectComparison() when the integerness and
+    // signedness of the two types matches.
+    //
+    // If the integerness of the types doesn't match, then at best
+    // clampToDirectComparison() won't be much more efficient than the
+    // cast-everything-to-double method, since we'll need to convert to
+    // floating point anyway; at worst, we risk incorrect results when
+    // clamping a float to a 32-bit integral type due to potential precision
+    // loss.
+    //
+    // If the signedness doesn't match, clampToDirectComparison() will
+    // produce warnings about comparing signed vs. unsigned, which are apt
+    // since negative signed values will be converted to large unsigned ones
+    // and we'll get incorrect results.
+    return ClampToNonLongLongHelper < std::numeric_limits<LimitType>::is_integer == std::numeric_limits<ValueType>::is_integer && std::numeric_limits<LimitType>::is_signed == std::numeric_limits<ValueType>::is_signed, LimitType, ValueType > ::clampTo(value, min, max);
+  }
 };
 
 // Clamping to [unsigned] long long int limits requires more care.  These may
 // not be accurately representable as doubles, so instead we cast |value| to the
 // limit type.  But that cast is undefined if |value| is floating point and
 // outside the representable range of the limit type, so we also have to check
 // for that case explicitly.
-template<typename ValueType> class ClampToHelper<long long int, ValueType> {
-public:
-    static inline long long int clampTo(ValueType value, long long int min, long long int max)
-    {
-        if (!std::numeric_limits<ValueType>::is_integer) {
-            if (value > 0) {
-                if (static_cast<double>(value) >= static_cast<double>(std::numeric_limits<long long int>::max()))
-                    return max;
-            } else if (static_cast<double>(value) <= static_cast<double>(std::numeric_limits<long long int>::min())) {
-                return min;
-            }
-        }
-        // Note: If |value| were unsigned long long int, it could be larger than
-        // the largest long long int, and this code would be wrong; we handle
-        // this case with a separate full specialization below.
-        return clampToDirectComparison(static_cast<long long int>(value), min, max);
+template <typename ValueType>
+class ClampToHelper<long long int, ValueType> {
+ public:
+  static inline long long int clampTo(ValueType value, long long int min, long long int max) {
+    if (!std::numeric_limits<ValueType>::is_integer) {
+      if (value > 0) {
+        if (static_cast<double>(value) >= static_cast<double>(std::numeric_limits<long long int>::max()))
+          return max;
+      } else if (static_cast<double>(value) <= static_cast<double>(std::numeric_limits<long long int>::min())) {
+        return min;
+      }
     }
+    // Note: If |value| were unsigned long long int, it could be larger than
+    // the largest long long int, and this code would be wrong; we handle
+    // this case with a separate full specialization below.
+    return clampToDirectComparison(static_cast<long long int>(value), min, max);
+  }
 };
 
 // This specialization handles the case where the above partial specialization
 // would be potentially incorrect.
-template<> class ClampToHelper<long long int, unsigned long long int> {
-public:
-    static inline long long int clampTo(unsigned long long int value, long long int min, long long int max)
-    {
-        if (max <= 0 || value >= static_cast<unsigned long long int>(max))
-            return max;
-        const long long int longLongValue = static_cast<long long int>(value);
-        return (longLongValue <= min) ? min : longLongValue;
-    }
+template <>
+class ClampToHelper<long long int, unsigned long long int> {
+ public:
+  static inline long long int clampTo(unsigned long long int value, long long int min, long long int max) {
+    if (max <= 0 || value >= static_cast<unsigned long long int>(max))
+      return max;
+    const long long int longLongValue = static_cast<long long int>(value);
+    return (longLongValue <= min) ? min : longLongValue;
+  }
 };
 
 // This is similar to the partial specialization that clamps to long long int,
 // but because the lower-bound check is done for integer value types as well, we
 // don't need a <unsigned long long int, long long int> full specialization.
-template<typename ValueType> class ClampToHelper<unsigned long long int, ValueType> {
-public:
-    static inline unsigned long long int clampTo(ValueType value, unsigned long long int min, unsigned long long int max)
-    {
-        if (value <= 0)
-            return min;
-        if (!std::numeric_limits<ValueType>::is_integer) {
-            if (static_cast<double>(value) >= static_cast<double>(std::numeric_limits<unsigned long long int>::max()))
-                return max;
-        }
-        return clampToDirectComparison(static_cast<unsigned long long int>(value), min, max);
+template <typename ValueType>
+class ClampToHelper<unsigned long long int, ValueType> {
+ public:
+  static inline unsigned long long int clampTo(ValueType value, unsigned long long int min, unsigned long long int max) {
+    if (value <= 0)
+      return min;
+    if (!std::numeric_limits<ValueType>::is_integer) {
+      if (static_cast<double>(value) >= static_cast<double>(std::numeric_limits<unsigned long long int>::max()))
+        return max;
     }
+    return clampToDirectComparison(static_cast<unsigned long long int>(value), min, max);
+  }
 };
 
-template<typename T> inline T defaultMaximumForClamp() { return std::numeric_limits<T>::max(); }
+template <typename T>
+inline T defaultMaximumForClamp() {
+  return std::numeric_limits<T>::max();
+}
 // This basically reimplements C++11's std::numeric_limits<T>::lowest().
-template<typename T> inline T defaultMinimumForClamp() { return std::numeric_limits<T>::min(); }
-template<> inline float defaultMinimumForClamp<float>() { return -std::numeric_limits<float>::max(); }
-template<> inline double defaultMinimumForClamp<double>() { return -std::numeric_limits<double>::max(); }
+template <typename T>
+inline T defaultMinimumForClamp() {
+  return std::numeric_limits<T>::min();
+}
+template <>
+inline float defaultMinimumForClamp<float>() {
+  return -std::numeric_limits<float>::max();
+}
+template <>
+inline double defaultMinimumForClamp<double>() {
+  return -std::numeric_limits<double>::max();
+}
 
 // And, finally, the actual function for people to call.
-template<typename LimitType, typename ValueType> inline LimitType clampTo(ValueType value, LimitType min = defaultMinimumForClamp<LimitType>(), LimitType max = defaultMaximumForClamp<LimitType>())
-{
-    ASSERT(!std::isnan(static_cast<double>(value)));
-    ASSERT(min <= max); // This also ensures |min| and |max| aren't NaN.
-    return ClampToHelper<LimitType, ValueType>::clampTo(value, min, max);
+template <typename LimitType, typename ValueType>
+inline LimitType clampTo(ValueType value, LimitType min = defaultMinimumForClamp<LimitType>(), LimitType max = defaultMaximumForClamp<LimitType>()) {
+  ASSERT(!std::isnan(static_cast<double>(value)));
+  ASSERT(min <= max);  // This also ensures |min| and |max| aren't NaN.
+  return ClampToHelper<LimitType, ValueType>::clampTo(value, min, max);
 }
 
-inline bool isWithinIntRange(float x)
-{
-    return x > static_cast<float>(std::numeric_limits<int>::min()) && x < static_cast<float>(std::numeric_limits<int>::max());
+inline bool isWithinIntRange(float x) {
+  return x > static_cast<float>(std::numeric_limits<int>::min()) && x < static_cast<float>(std::numeric_limits<int>::max());
 }
 
-static size_t greatestCommonDivisor(size_t a, size_t b)
-{
-    return b ? greatestCommonDivisor(b, a % b) : a;
+static size_t greatestCommonDivisor(size_t a, size_t b) {
+  return b ? greatestCommonDivisor(b, a % b) : a;
 }
 
-inline size_t lowestCommonMultiple(size_t a, size_t b)
-{
-    return a && b ? a / greatestCommonDivisor(a, b) * b : 0;
+inline size_t lowestCommonMultiple(size_t a, size_t b) {
+  return a && b ? a / greatestCommonDivisor(a, b) * b : 0;
 }
 
 #ifndef UINT64_C
 #if COMPILER(MSVC)
-#define UINT64_C(c) c ## ui64
+#define UINT64_C(c) c##ui64
 #else
-#define UINT64_C(c) c ## ull
+#define UINT64_C(c) c##ull
 #endif
 #endif
 
 // Calculate d % 2^{64}.
-inline void doubleToInteger(double d, unsigned long long& value)
-{
-    if (std::isnan(d) || std::isinf(d)) {
-        value = 0;
+inline void doubleToInteger(double d, unsigned long long& value) {
+  if (std::isnan(d) || std::isinf(d)) {
+    value = 0;
+  } else {
+    // -2^{64} < fmodValue < 2^{64}.
+    double fmodValue = fmod(trunc(d), std::numeric_limits<unsigned long long>::max() + 1.0);
+    if (fmodValue >= 0) {
+      // 0 <= fmodValue < 2^{64}.
+      // 0 <= value < 2^{64}. This cast causes no loss.
+      value = static_cast<unsigned long long>(fmodValue);
     } else {
-        // -2^{64} < fmodValue < 2^{64}.
-        double fmodValue = fmod(trunc(d), std::numeric_limits<unsigned long long>::max() + 1.0);
-        if (fmodValue >= 0) {
-            // 0 <= fmodValue < 2^{64}.
-            // 0 <= value < 2^{64}. This cast causes no loss.
-            value = static_cast<unsigned long long>(fmodValue);
-        } else {
-            // -2^{64} < fmodValue < 0.
-            // 0 < fmodValueInUnsignedLongLong < 2^{64}. This cast causes no loss.
-            unsigned long long fmodValueInUnsignedLongLong = static_cast<unsigned long long>(-fmodValue);
-            // -1 < (std::numeric_limits<unsigned long long>::max() - fmodValueInUnsignedLongLong) < 2^{64} - 1.
-            // 0 < value < 2^{64}.
-            value = std::numeric_limits<unsigned long long>::max() - fmodValueInUnsignedLongLong + 1;
-        }
+      // -2^{64} < fmodValue < 0.
+      // 0 < fmodValueInUnsignedLongLong < 2^{64}. This cast causes no loss.
+      unsigned long long fmodValueInUnsignedLongLong = static_cast<unsigned long long>(-fmodValue);
+      // -1 < (std::numeric_limits<unsigned long long>::max() - fmodValueInUnsignedLongLong) < 2^{64} - 1.
+      // 0 < value < 2^{64}.
+      value = std::numeric_limits<unsigned long long>::max() - fmodValueInUnsignedLongLong + 1;
     }
+  }
 }
 
 namespace WTF {
 
-inline unsigned fastLog2(unsigned i)
-{
-    unsigned log2 = 0;
-    if (i & (i - 1))
-        log2 += 1;
-    if (i >> 16)
-        log2 += 16, i >>= 16;
-    if (i >> 8)
-        log2 += 8, i >>= 8;
-    if (i >> 4)
-        log2 += 4, i >>= 4;
-    if (i >> 2)
-        log2 += 2, i >>= 2;
-    if (i >> 1)
-        log2 += 1;
-    return log2;
+inline unsigned fastLog2(unsigned i) {
+  unsigned log2 = 0;
+  if (i & (i - 1))
+    log2 += 1;
+  if (i >> 16)
+    log2 += 16, i >>= 16;
+  if (i >> 8)
+    log2 += 8, i >>= 8;
+  if (i >> 4)
+    log2 += 4, i >>= 4;
+  if (i >> 2)
+    log2 += 2, i >>= 2;
+  if (i >> 1)
+    log2 += 1;
+  return log2;
 }
 
-} // namespace WTF
+}  // namespace WTF
 
-#endif // #ifndef WTF_MathExtras_h
+#endif  // #ifndef WTF_MathExtras_h