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/* $Id: __fpclassifyl.cpp $ */
/** @file
* IPRT - No-CRT - __fpclassifyl().
*/
/*
* Copyright (C) 2022-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define IPRT_NO_CRT_FOR_3RD_PARTY
#include "internal/nocrt.h"
#include <iprt/nocrt/math.h>
#include <iprt/assertcompile.h>
#include <iprt/assert.h>
#undef __fpclassifyl
int RT_NOCRT(__fpclassifyl)(long double lrd)
{
#ifdef RT_COMPILER_WITH_128BIT_LONG_DOUBLE
RTFLOAT128U u;
u.rd = lrd;
if (RTFLOAT128U_IS_ZERO(&u))
return RT_NOCRT_FP_ZERO;
if (RTFLOAT128U_IS_NORMAL(&u))
return RT_NOCRT_FP_NORMAL;
if (RTFLOAT128U_IS_NAN(&u))
return RT_NOCRT_FP_NAN;
if (RTFLOAT128U_IS_INF(&u))
return RT_NOCRT_FP_INFINITE;
Assert(RTFLOAT128U_IS_SUBNORMAL(&u));
return RT_NOCRT_FP_SUBNORMAL;
#elif defined(RT_COMPILER_WITH_80BIT_LONG_DOUBLE)
RTFLOAT80U2 u;
u.lrd = lrd;
if (RTFLOAT80U_IS_ZERO(&u))
return RT_NOCRT_FP_ZERO;
if (RTFLOAT80U_IS_NORMAL(&u))
return RT_NOCRT_FP_NORMAL;
if (RTFLOAT80U_IS_NAN(&u))
return RT_NOCRT_FP_NAN;
if (RTFLOAT80U_IS_INF(&u))
return RT_NOCRT_FP_INFINITE;
if (RTFLOAT80U_IS_DENORMAL_OR_PSEUDO_DENORMAL(&u))
return RT_NOCRT_FP_SUBNORMAL;
/* Following i387 invalid operand rules here. Adjust as needed for
other architectures. */
Assert(RTFLOAT80U_IS_387_INVALID(&u));
return RT_NOCRT_FP_NAN;
#else
AssertCompile(sizeof(lrd) == sizeof(uint64_t));
RTFLOAT64U u;
u.rd = lrd;
if (RTFLOAT64U_IS_ZERO(&u))
return RT_NOCRT_FP_ZERO;
if (RTFLOAT64U_IS_NORMAL(&u))
return RT_NOCRT_FP_NORMAL;
if (RTFLOAT64U_IS_NAN(&u))
return RT_NOCRT_FP_NAN;
if (RTFLOAT64U_IS_INF(&u))
return RT_NOCRT_FP_INFINITE;
Assert(RTFLOAT64U_IS_SUBNORMAL(&u));
return RT_NOCRT_FP_SUBNORMAL;
#endif
}
RT_ALIAS_AND_EXPORT_NOCRT_SYMBOL_WITHOUT_UNDERSCORE(__fpclassifyl);
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