base/float_util.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef BASE_FLOAT_UTIL_H_
   6 #define BASE_FLOAT_UTIL_H_
   7
   8 #include "build/build_config.h"
   9
  10 #include <float.h>
  11 #include <math.h>
  12
  13 namespace base {
  14
  15 inline bool IsFinite(const double& number) {
  16 #if defined(OS_ANDROID)
  17   // isfinite isn't available on Android: http://b.android.com/34793
  18   return finite(number) != 0;
  19 #elif defined(OS_POSIX)
  20   return isfinite(number) != 0;
  21 #elif defined(OS_WIN)
  22   return _finite(number) != 0;
  23 #endif
  24 }
  25
  26 }  // namespace base
  27
  28 #endif  // BASE_FLOAT_UTIL_H_