mirror of
https://github.com/pocoproject/poco.git
synced 2024-12-13 18:45:10 +01:00
154 lines
4.1 KiB
C++
154 lines
4.1 KiB
C++
//
|
|
// FPEnvironment_WIN32.h
|
|
//
|
|
// $Id: //poco/Main/Foundation/include/Poco/FPEnvironment_WIN32.h#2 $
|
|
//
|
|
// Library: Foundation
|
|
// Package: Core
|
|
// Module: FPEnvironment
|
|
//
|
|
// Definitions of class FPEnvironmentImpl for WIN32.
|
|
//
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person or organization
|
|
// obtaining a copy of the software and accompanying documentation covered by
|
|
// this license (the "Software") to use, reproduce, display, distribute,
|
|
// execute, and transmit the Software, and to prepare derivative works of the
|
|
// Software, and to permit third-parties to whom the Software is furnished to
|
|
// do so, all subject to the following:
|
|
//
|
|
// The copyright notices in the Software and this entire statement, including
|
|
// the above license grant, this restriction and the following disclaimer,
|
|
// must be included in all copies of the Software, in whole or in part, and
|
|
// all derivative works of the Software, unless such copies or derivative
|
|
// works are solely in the form of machine-executable object code generated by
|
|
// a source language processor.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
|
|
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
|
|
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
|
|
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
// DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
|
|
#ifndef Foundation_FPEnvironment_WIN32_INCLUDED
|
|
#define Foundation_FPEnvironment_WIN32_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
#include <float.h>
|
|
#include <math.h>
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
class Foundation_API FPEnvironmentImpl
|
|
{
|
|
protected:
|
|
enum RoundingModeImpl
|
|
{
|
|
FP_ROUND_DOWNWARD_IMPL = RC_DOWN,
|
|
FP_ROUND_UPWARD_IMPL = RC_UP,
|
|
FP_ROUND_TONEAREST_IMPL = RC_NEAR,
|
|
FP_ROUND_TOWARDZERO_IMPL = RC_CHOP
|
|
};
|
|
enum FlagImpl
|
|
{
|
|
FP_DIVIDE_BY_ZERO_IMPL = SW_ZERODIVIDE,
|
|
FP_INEXACT_IMPL = SW_INEXACT,
|
|
FP_OVERFLOW_IMPL = SW_OVERFLOW,
|
|
FP_UNDERFLOW_IMPL = SW_UNDERFLOW,
|
|
FP_INVALID_IMPL = SW_INVALID
|
|
};
|
|
FPEnvironmentImpl();
|
|
FPEnvironmentImpl(const FPEnvironmentImpl& env);
|
|
~FPEnvironmentImpl();
|
|
FPEnvironmentImpl& operator = (const FPEnvironmentImpl& env);
|
|
void keepCurrentImpl();
|
|
static void clearFlagsImpl();
|
|
static bool isFlagImpl(FlagImpl flag);
|
|
static void setRoundingModeImpl(RoundingModeImpl mode);
|
|
static RoundingModeImpl getRoundingModeImpl();
|
|
static bool isInfiniteImpl(float value);
|
|
static bool isInfiniteImpl(double value);
|
|
static bool isInfiniteImpl(long double value);
|
|
static bool isNaNImpl(float value);
|
|
static bool isNaNImpl(double value);
|
|
static bool isNaNImpl(long double value);
|
|
static float copySignImpl(float target, float source);
|
|
static double copySignImpl(double target, double source);
|
|
static long double copySignImpl(long double target, long double source);
|
|
|
|
private:
|
|
unsigned _env;
|
|
};
|
|
|
|
|
|
//
|
|
// inlines
|
|
//
|
|
inline bool FPEnvironmentImpl::isInfiniteImpl(float value)
|
|
{
|
|
return _finite(value) == 0;
|
|
}
|
|
|
|
|
|
inline bool FPEnvironmentImpl::isInfiniteImpl(double value)
|
|
{
|
|
return _finite(value) == 0;
|
|
}
|
|
|
|
|
|
inline bool FPEnvironmentImpl::isInfiniteImpl(long double value)
|
|
{
|
|
return _finite(value) == 0;
|
|
}
|
|
|
|
|
|
inline bool FPEnvironmentImpl::isNaNImpl(float value)
|
|
{
|
|
return _isnan(value) != 0;
|
|
}
|
|
|
|
|
|
inline bool FPEnvironmentImpl::isNaNImpl(double value)
|
|
{
|
|
return _isnan(value) != 0;
|
|
}
|
|
|
|
|
|
inline bool FPEnvironmentImpl::isNaNImpl(long double value)
|
|
{
|
|
return _isnan(value) != 0;
|
|
}
|
|
|
|
|
|
inline float FPEnvironmentImpl::copySignImpl(float target, float source)
|
|
{
|
|
return float(_copysign(target, source));
|
|
}
|
|
|
|
|
|
inline double FPEnvironmentImpl::copySignImpl(double target, double source)
|
|
{
|
|
return _copysign(target, source);
|
|
}
|
|
|
|
|
|
inline long double FPEnvironmentImpl::copySignImpl(long double target, long double source)
|
|
{
|
|
return (source > 0 && target > 0) || (source < 0 && target < 0) ? target : -target;
|
|
}
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_FPEnvironment_WIN32_INCLUDED
|