dart-sdk/runtime/platform/math.h

// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

#ifndef RUNTIME_PLATFORM_MATH_H_
#define RUNTIME_PLATFORM_MATH_H_

// We must take these math functions from the C++ header file as long as we
// are using the STL. Otherwise the Android build will break due to confusion
// between C++ and C headers when math.h is also included.
#if !defined(HOST_OS_FUCHSIA)
#include <cmath>

#define isinf(val) std::isinf(val)
#define isnan(val) std::isnan(val)
#define signbit(val) std::signbit(val)
#define isfinite(val) std::isfinite(val)
#else
// TODO(zra): When Fuchsia has STL, do the same thing as above.
#include <math.h>
#endif

#endif  // RUNTIME_PLATFORM_MATH_H_