VirtualBox

source: vbox/trunk/src/VBox/Runtime/common/math/llrint.asm@ 67124

Last change on this file since 67124 was 62477, checked in by vboxsync, 8 years ago

(C) 2016

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 1.5 KB
Line 
1; $Id: llrint.asm 62477 2016-07-22 18:27:37Z vboxsync $
2;; @file
3; IPRT - No-CRT llrint - AMD64 & X86.
4;
5
6;
7; Copyright (C) 2006-2016 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%include "iprt/asmdefs.mac"
28
29BEGINCODE
30
31;;
32; Round rd to the nearest integer value, rounding according to the current rounding direction.
33; @returns 32-bit: edx:eax 64-bit: rax
34; @param rd 32-bit: [esp + 4h] 64-bit: xmm0
35BEGINPROC RT_NOCRT(llrint)
36%ifdef RT_ARCH_AMD64
37 cvtsd2si rax, xmm0
38%else
39 push ebp
40 mov ebp, esp
41 sub esp, 8h
42
43 fld qword [ebp + 8h]
44 fistp qword [esp]
45 fwait
46 mov eax, [esp]
47 mov edx, [esp + 4]
48
49 leave
50%endif
51 ret
52ENDPROC RT_NOCRT(llrint)
53
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