fpenvironment_c99.cpp

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// FPEnvironment_C99.cpp
//
// $Id: //poco/Main/Foundation/src/FPEnvironment_C99.cpp#5 $
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#include "Foundation/FPEnvironment_C99.h"


Foundation_BEGIN


FPEnvironmentImp::FPEnvironmentImp()
{
	fegetenv(&_env);
}


FPEnvironmentImp::FPEnvironmentImp(const FPEnvironmentImp& env)
{
	_env = env._env;
}


FPEnvironmentImp::~FPEnvironmentImp()
{
	fesetenv(&_env);
}


FPEnvironmentImp& FPEnvironmentImp::operator = (const FPEnvironmentImp& env)
{
	_env = env._env;
	return *this;
}


void FPEnvironmentImp::keepCurrentImp()
{
	fegetenv(&_env);
}


void FPEnvironmentImp::clearFlagsImp()
{
	feclearexcept(FE_ALL_EXCEPT);
}


bool FPEnvironmentImp::isFlagImp(FlagImp flag)
{
	return fetestexcept(flag) != 0;
}


void FPEnvironmentImp::setRoundingModeImp(RoundingModeImp mode)
{
	fesetround(mode);
}


FPEnvironmentImp::RoundingModeImp FPEnvironmentImp::getRoundingModeImp()
{
	return (RoundingModeImp) fegetround();
}


long double FPEnvironmentImp::copySignImp(long double target, long double source)
{
	return (source >= 0 && target >= 0) || (source < 0 && target < 0) ? target : -target;
}


Foundation_END