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//
// FPEnvironment_C99.h
//
// Library: Foundation
// Package: Core
// Module: FPEnvironment
//
// Definitions of class FPEnvironmentImpl for C99.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_FPEnvironment_C99_INCLUDED
#define Foundation_FPEnvironment_C99_INCLUDED
#include "Poco/Foundation.h"
#include <fenv.h>
#include <cmath>
namespace Poco {
class FPEnvironmentImpl
{
protected:
enum RoundingModeImpl
{
FP_ROUND_DOWNWARD_IMPL = FE_DOWNWARD,
FP_ROUND_UPWARD_IMPL = FE_UPWARD,
FP_ROUND_TONEAREST_IMPL = FE_TONEAREST,
FP_ROUND_TOWARDZERO_IMPL = FE_TOWARDZERO
};
enum FlagImpl
{
FP_DIVIDE_BY_ZERO_IMPL = FE_DIVBYZERO,
FP_INEXACT_IMPL = FE_INEXACT,
FP_OVERFLOW_IMPL = FE_OVERFLOW,
FP_UNDERFLOW_IMPL = FE_UNDERFLOW,
FP_INVALID_IMPL = FE_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:
fenv_t _env;
};
//
// inlines
//
inline bool FPEnvironmentImpl::isInfiniteImpl(float value)
{
return std::isinf(value) != 0;
}
inline bool FPEnvironmentImpl::isInfiniteImpl(double value)
{
return std::isinf(value) != 0;
}
inline bool FPEnvironmentImpl::isInfiniteImpl(long double value)
{
return std::isinf((double) value) != 0;
}
inline bool FPEnvironmentImpl::isNaNImpl(float value)
{
return std::isnan(value) != 0;
}
inline bool FPEnvironmentImpl::isNaNImpl(double value)
{
return std::isnan(value) != 0;
}
inline bool FPEnvironmentImpl::isNaNImpl(long double value)
{
return std::isnan((double) value) != 0;
}
inline float FPEnvironmentImpl::copySignImpl(float target, float source)
{
return copysignf(target, source);
}
inline double FPEnvironmentImpl::copySignImpl(double target, double source)
{
return copysign(target, source);
}
} // namespace Poco
#endif // Foundation_FPEnvironment_C99_INCLUDED
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