michael@0: // Copyright (c) 2012 The Chromium Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: 
michael@0: #ifndef BASE_FLOAT_UTIL_H_
michael@0: #define BASE_FLOAT_UTIL_H_
michael@0: 
michael@0: #include "build/build_config.h"
michael@0: 
michael@0: #include <float.h>
michael@0: 
michael@0: #include <cmath>
michael@0: 
michael@0: namespace base {
michael@0: 
michael@0: template <typename Float>
michael@0: inline bool IsFinite(const Float& number) {
michael@0: #if defined(OS_POSIX)
michael@0:   return std::isfinite(number) != 0;
michael@0: #elif defined(OS_WIN)
michael@0:   return _finite(number) != 0;
michael@0: #endif
michael@0: }
michael@0: 
michael@0: template <typename Float>
michael@0: inline bool IsNaN(const Float& number) {
michael@0: #if defined(OS_POSIX)
michael@0:   return std::isnan(number) != 0;
michael@0: #elif defined(OS_WIN)
michael@0:   return _isnan(number) != 0;
michael@0: #endif
michael@0: }
michael@0: 
michael@0: }  // namespace base
michael@0: 
michael@0: #endif  // BASE_FLOAT_UTIL_H_