mirror of
https://github.com/VCMP-SqMod/SqMod.git
synced 2024-11-08 08:47:17 +01:00
90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
|
//
|
||
|
|
// FPEnvironment_DEC.h
|
||
|
|
//
|
||
|
|
// Library: Foundation
|
||
|
|
// Package: Core
|
||
|
|
// Module: FPEnvironment
|
||
|
|
//
|
||
|
|
// Definitions of class FPEnvironmentImpl for Tru64 and OpenVMS Alpha.
|
||
|
|
//
|
||
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
||
|
|
// and Contributors.
|
||
|
|
//
|
||
|
|
// SPDX-License-Identifier: BSL-1.0
|
||
|
|
//
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef Foundation_FPEnvironment_DEC_INCLUDED
|
||
|
|
#define Foundation_FPEnvironment_DEC_INCLUDED
|
||
|
|
|
||
|
|
|
||
|
|
#include "Poco/Foundation.h"
|
||
|
|
#if defined(__VMS)
|
||
|
|
#include <ieeedef.h>
|
||
|
|
#else
|
||
|
|
#include <machine/fpu.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
namespace Poco {
|
||
|
|
|
||
|
|
|
||
|
|
class FPEnvironmentImpl
|
||
|
|
{
|
||
|
|
protected:
|
||
|
|
enum RoundingModeImpl
|
||
|
|
{
|
||
|
|
FP_ROUND_DOWNWARD_IMPL = 0,
|
||
|
|
FP_ROUND_UPWARD_IMPL = 0,
|
||
|
|
FP_ROUND_TONEAREST_IMPL = 0,
|
||
|
|
FP_ROUND_TOWARDZERO_IMPL = 0
|
||
|
|
};
|
||
|
|
enum FlagImpl
|
||
|
|
{
|
||
|
|
#if defined(__VMS)
|
||
|
|
FP_DIVIDE_BY_ZERO_IMPL = IEEE$M_STATUS_DZE,
|
||
|
|
FP_INEXACT_IMPL = IEEE$M_STATUS_INE,
|
||
|
|
FP_OVERFLOW_IMPL = IEEE$M_STATUS_OVF,
|
||
|
|
FP_UNDERFLOW_IMPL = IEEE$M_STATUS_UNF,
|
||
|
|
FP_INVALID_IMPL = IEEE$M_STATUS_INV
|
||
|
|
#else
|
||
|
|
FP_DIVIDE_BY_ZERO_IMPL = IEEE_STATUS_DZE,
|
||
|
|
FP_INEXACT_IMPL = IEEE_STATUS_INE,
|
||
|
|
FP_OVERFLOW_IMPL = IEEE_STATUS_OVF,
|
||
|
|
FP_UNDERFLOW_IMPL = IEEE_STATUS_UNF,
|
||
|
|
FP_INVALID_IMPL = IEEE_STATUS_INV
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
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:
|
||
|
|
#if defined(__VMS)
|
||
|
|
struct _ieee _env;
|
||
|
|
#else
|
||
|
|
unsigned long _env;
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
} // namespace Poco
|
||
|
|
|
||
|
|
|
||
|
|
#endif // Foundation_FPEnvironment_DEC_INCLUDED
|