| 1 | /* $Id: __fpclassifyl.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - No-CRT - __fpclassifyl().
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2022-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #define IPRT_NO_CRT_FOR_3RD_PARTY
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| 42 | #include "internal/nocrt.h"
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| 43 | #include <iprt/nocrt/math.h>
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| 44 | #include <iprt/assertcompile.h>
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| 45 | #include <iprt/assert.h>
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| 46 |
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| 47 |
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| 48 | #undef __fpclassifyl
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| 49 | int RT_NOCRT(__fpclassifyl)(long double lrd)
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| 50 | {
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| 51 | #ifdef RT_COMPILER_WITH_128BIT_LONG_DOUBLE
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| 52 | RTFLOAT128U u;
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| 53 | u.rd = lrd;
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| 54 | if (RTFLOAT128U_IS_ZERO(&u))
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| 55 | return RT_NOCRT_FP_ZERO;
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| 56 | if (RTFLOAT128U_IS_NORMAL(&u))
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| 57 | return RT_NOCRT_FP_NORMAL;
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| 58 | if (RTFLOAT128U_IS_NAN(&u))
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| 59 | return RT_NOCRT_FP_NAN;
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| 60 | if (RTFLOAT128U_IS_INF(&u))
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| 61 | return RT_NOCRT_FP_INFINITE;
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| 62 | Assert(RTFLOAT128U_IS_SUBNORMAL(&u));
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| 63 | return RT_NOCRT_FP_SUBNORMAL;
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| 64 |
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| 65 | #elif defined(RT_COMPILER_WITH_80BIT_LONG_DOUBLE)
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| 66 | RTFLOAT80U2 u;
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| 67 | u.lrd = lrd;
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| 68 | if (RTFLOAT80U_IS_ZERO(&u))
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| 69 | return RT_NOCRT_FP_ZERO;
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| 70 | if (RTFLOAT80U_IS_NORMAL(&u))
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| 71 | return RT_NOCRT_FP_NORMAL;
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| 72 | if (RTFLOAT80U_IS_NAN(&u))
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| 73 | return RT_NOCRT_FP_NAN;
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| 74 | if (RTFLOAT80U_IS_INF(&u))
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| 75 | return RT_NOCRT_FP_INFINITE;
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| 76 | if (RTFLOAT80U_IS_DENORMAL_OR_PSEUDO_DENORMAL(&u))
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| 77 | return RT_NOCRT_FP_SUBNORMAL;
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| 78 |
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| 79 | /* Following i387 invalid operand rules here. Adjust as needed for
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| 80 | other architectures. */
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| 81 | Assert(RTFLOAT80U_IS_387_INVALID(&u));
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| 82 | return RT_NOCRT_FP_NAN;
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| 83 |
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| 84 | #else
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| 85 | AssertCompile(sizeof(lrd) == sizeof(uint64_t));
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| 86 | RTFLOAT64U u;
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| 87 | u.rd = lrd;
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| 88 | if (RTFLOAT64U_IS_ZERO(&u))
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| 89 | return RT_NOCRT_FP_ZERO;
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| 90 | if (RTFLOAT64U_IS_NORMAL(&u))
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| 91 | return RT_NOCRT_FP_NORMAL;
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| 92 | if (RTFLOAT64U_IS_NAN(&u))
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| 93 | return RT_NOCRT_FP_NAN;
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| 94 | if (RTFLOAT64U_IS_INF(&u))
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| 95 | return RT_NOCRT_FP_INFINITE;
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| 96 | Assert(RTFLOAT64U_IS_SUBNORMAL(&u));
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| 97 | return RT_NOCRT_FP_SUBNORMAL;
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| 98 | #endif
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| 99 | }
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| 100 | RT_ALIAS_AND_EXPORT_NOCRT_SYMBOL_WITHOUT_UNDERSCORE(__fpclassifyl);
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| 101 |
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