blob: e2fa4843b6109093052861e0d88692a83ae24813 [file] [log] [blame]
// 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 BASE_FLOAT_UTIL_H_
#define BASE_FLOAT_UTIL_H_
#include "build/build_config.h"
#if defined(OS_STARBOARD)
#include "starboard/double.h"
#else
#include <float.h>
#include <math.h>
#include <cmath>
#endif
namespace base {
inline bool IsFinite(const double& number) {
#if defined(OS_STARBOARD)
return SbDoubleIsFinite(number);
#elif defined(__LB_SHELL__) && defined(__LB_LINUX__)
// On Linux, math.h defines fpclassify() as a macro which is undefined in
// cmath. However, as math.h has guard to avoid being included again, the
// fpclassify() macro is no longer available if cmath is included after
// math.h, even if math.h is included again. So we have to use
// std::fpclassify() on Linux.
return std::fpclassify(number) != FP_INFINITE;
#elif defined(__LB_SHELL__)
return fpclassify(number) != FP_INFINITE;
#elif defined(OS_ANDROID)
// isfinite isn't available on Android: http://b.android.com/34793
return finite(number) != 0;
#elif defined(OS_POSIX)
return isfinite(number) != 0;
#elif defined(OS_WIN)
return _finite(number) != 0;
#endif
}
} // namespace base
#endif // BASE_FLOAT_UTIL_H_