VirtualBox

source: vbox/trunk/src/VBox/Runtime/common/math/roundf.cpp@ 96206

Last change on this file since 96206 was 96117, checked in by vboxsync, 2 years ago

IPRT/nocrt: lround, lroundf, lroundl, rint, rintf, round, roundf and roundl. bugref:10261

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.0 KB
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1/* $Id: roundf.cpp 96117 2022-08-08 21:29:03Z vboxsync $ */
2/** @file
3 * IPRT - No-CRT - roundf().
4 */
5
6/*
7 * Copyright (C) 2022 Oracle Corporation
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * The contents of this file may alternatively be used under the terms
18 * of the Common Development and Distribution License Version 1.0
19 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20 * VirtualBox OSE distribution, in which case the provisions of the
21 * CDDL are applicable instead of those of the GPL.
22 *
23 * You may elect to license modified versions of this file under the
24 * terms and conditions of either the GPL or the CDDL or both.
25 */
26
27
28/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#define IPRT_NO_CRT_FOR_3RD_PARTY
32#include "internal/nocrt.h"
33#include <iprt/nocrt/math.h>
34
35
36#undef roundf
37float RT_NOCRT(roundf)(float r32)
38{
39 if (isfinite(r32))
40 {
41 float const r32In = r32;
42 if (r32 >= 0.0)
43 {
44 r32 = RT_NOCRT(ceilf)(r32);
45 if (r32 - r32In > 0.5)
46 r32 -= 1.0;
47 }
48 else
49 {
50 r32 = RT_NOCRT(ceilf)(-r32);
51 if (r32 + r32In > 0.5)
52 r32 -= 1.0;
53 r32 = -r32;
54 }
55 }
56 return r32;
57}
58RT_ALIAS_AND_EXPORT_NOCRT_SYMBOL(roundf);
59
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