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·141 lines (99 loc) · 2.3 KB
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//
// FPEnvironment_SUN.cpp
//
// $Id: //poco/1.4/Foundation/src/FPEnvironment_SUN.cpp#1 $
//
// Library: Foundation
// Package: Core
// Module: FPEnvironment
//
// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include <math.h>
#include "Poco/FPEnvironment_SUN.h"
namespace Poco {
FPEnvironmentImpl::FPEnvironmentImpl()
{
_rnd = fpgetround();
_exc = fpgetmask();
}
FPEnvironmentImpl::FPEnvironmentImpl(const FPEnvironmentImpl& env)
{
_rnd = env._rnd;
_exc = env._exc;
}
FPEnvironmentImpl::~FPEnvironmentImpl()
{
fpsetround(_rnd);
fpsetmask(_exc);
}
FPEnvironmentImpl& FPEnvironmentImpl::operator = (const FPEnvironmentImpl& env)
{
_rnd = env._rnd;
_exc = env._exc;
return *this;
}
bool FPEnvironmentImpl::isInfiniteImpl(float value)
{
int cls = fpclass(value);
return cls == FP_PINF || cls == FP_NINF;
}
bool FPEnvironmentImpl::isInfiniteImpl(double value)
{
int cls = fpclass(value);
return cls == FP_PINF || cls == FP_NINF;
}
bool FPEnvironmentImpl::isInfiniteImpl(long double value)
{
int cls = fpclass(value);
return cls == FP_PINF || cls == FP_NINF;
}
bool FPEnvironmentImpl::isNaNImpl(float value)
{
return isnanf(value) != 0;
}
bool FPEnvironmentImpl::isNaNImpl(double value)
{
return isnan(value) != 0;
}
bool FPEnvironmentImpl::isNaNImpl(long double value)
{
return isnan((double) value) != 0;
}
float FPEnvironmentImpl::copySignImpl(float target, float source)
{
return (float) copysign(target, source);
}
double FPEnvironmentImpl::copySignImpl(double target, double source)
{
return (float) copysign(target, source);
}
long double FPEnvironmentImpl::copySignImpl(long double target, long double source)
{
return (source > 0 && target > 0) || (source < 0 && target < 0) ? target : -target;
}
void FPEnvironmentImpl::keepCurrentImpl()
{
fpsetround(_rnd);
fpsetmask(_exc);
}
void FPEnvironmentImpl::clearFlagsImpl()
{
fpsetsticky(0);
}
bool FPEnvironmentImpl::isFlagImpl(FlagImpl flag)
{
return (fpgetsticky() & flag) != 0;
}
void FPEnvironmentImpl::setRoundingModeImpl(RoundingModeImpl mode)
{
fpsetround((fp_rnd) mode);
}
FPEnvironmentImpl::RoundingModeImpl FPEnvironmentImpl::getRoundingModeImpl()
{
return (FPEnvironmentImpl::RoundingModeImpl) fpgetround();
}
} // namespace Poco