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128 lines
2.6 KiB
C++
128 lines
2.6 KiB
C++
//
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// FPEnvironment_DUMMY.h
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//
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// $Id: //poco/1.4/Foundation/include/Poco/FPEnvironment_DUMMY.h#1 $
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//
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// Library: Foundation
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// Package: Core
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// Module: FPEnvironment
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//
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// Definition of class FPEnvironmentImpl for platforms that do not
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// support IEEE 754 extensions.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef Foundation_FPEnvironment_DUMMY_INCLUDED
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#define Foundation_FPEnvironment_DUMMY_INCLUDED
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#include "Poco/Foundation.h"
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#include <cmath>
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namespace Poco {
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class Foundation_API FPEnvironmentImpl
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{
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protected:
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enum RoundingModeImpl
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{
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FP_ROUND_DOWNWARD_IMPL,
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FP_ROUND_UPWARD_IMPL,
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FP_ROUND_TONEAREST_IMPL,
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FP_ROUND_TOWARDZERO_IMPL
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};
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enum FlagImpl
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{
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FP_DIVIDE_BY_ZERO_IMPL,
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FP_INEXACT_IMPL,
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FP_OVERFLOW_IMPL,
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FP_UNDERFLOW_IMPL,
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FP_INVALID_IMPL
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};
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FPEnvironmentImpl();
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FPEnvironmentImpl(const FPEnvironmentImpl& env);
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~FPEnvironmentImpl();
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FPEnvironmentImpl& operator = (const FPEnvironmentImpl& env);
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void keepCurrentImpl();
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static void clearFlagsImpl();
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static bool isFlagImpl(FlagImpl flag);
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static void setRoundingModeImpl(RoundingModeImpl mode);
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static RoundingModeImpl getRoundingModeImpl();
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static bool isInfiniteImpl(float value);
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static bool isInfiniteImpl(double value);
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static bool isInfiniteImpl(long double value);
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static bool isNaNImpl(float value);
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static bool isNaNImpl(double value);
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static bool isNaNImpl(long double value);
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static float copySignImpl(float target, float source);
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static double copySignImpl(double target, double source);
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static long double copySignImpl(long double target, long double source);
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private:
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static RoundingModeImpl _roundingMode;
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};
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//
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// inlines
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//
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inline bool FPEnvironmentImpl::isInfiniteImpl(float value)
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{
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return std::isinf(value) != 0;
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}
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inline bool FPEnvironmentImpl::isInfiniteImpl(double value)
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{
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return std::isinf(value) != 0;
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}
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inline bool FPEnvironmentImpl::isInfiniteImpl(long double value)
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{
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return std::isinf((double) value) != 0;
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}
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inline bool FPEnvironmentImpl::isNaNImpl(float value)
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{
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return std::isnan(value) != 0;
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}
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inline bool FPEnvironmentImpl::isNaNImpl(double value)
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{
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return std::isnan(value) != 0;
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}
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inline bool FPEnvironmentImpl::isNaNImpl(long double value)
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{
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return std::isnan((double) value) != 0;
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}
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inline float FPEnvironmentImpl::copySignImpl(float target, float source)
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{
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return copysignf(target, source);
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}
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inline double FPEnvironmentImpl::copySignImpl(double target, double source)
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{
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return copysign(target, source);
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}
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} // namespace Poco
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#endif // Foundation_FPEnvironment_DUMMY_INCLUDED
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