blob: ec1862b82cfafa04fd3bf53044b61d6ae80c2826 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/* $Id$ */
/** @file
* IPRT - No-CRT - copysign().
*/
/*
* Copyright (C) 2022 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE 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.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#define IPRT_NO_CRT_FOR_3RD_PARTY
#include "internal/nocrt.h"
#include <iprt/nocrt/math.h>
#include <iprt/assertcompile.h>
#undef copysign
double RT_NOCRT(copysign)(double rdMagnitude, double rdSign)
{
AssertCompile(sizeof(rdMagnitude) == sizeof(RTFLOAT64U));
#ifndef RT_LITTLE_ENDIAN /* MSC outputs a lot better code for the alternative below. */
RTFLOAT64U uRet, uSign;
uSign.rd = rdSign;
uRet.rd = rdMagnitude;
uRet.s.fSign = uSign.s.fSign;
#else
RTFLOAT64U uRet;
uRet.u = (*(uint64_t const *)&rdMagnitude & (RT_BIT_64(63) - 1U)) | (*(uint64_t const *)&rdSign & RT_BIT_64(63));
#endif
return uRet.rd;
}
RT_ALIAS_AND_EXPORT_NOCRT_SYMBOL(copysign);
|
