VirtualBox

source: vbox/trunk/src/VBox/Runtime/math/lrintl.asm@ 1349

Last change on this file since 1349 was 1, checked in by vboxsync, 55 years ago

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1; $Id: lrintl.asm 1 1970-01-01 00:00:00Z vboxsync $
2;; @file
3; InnoTek Portable Runtime - No-CRT lrintl - AMD64 & X86.
4;
5
6;
7; Copyright (C) 2006 InnoTek Systemberatung GmbH
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 as published by the Free Software Foundation,
13; in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
14; distribution. VirtualBox OSE is distributed in the hope that it will
15; be useful, but WITHOUT ANY WARRANTY of any kind.
16;
17; If you received this file as part of a commercial VirtualBox
18; distribution, then only the terms of your commercial VirtualBox
19; license agreement apply instead of the previous paragraph.
20;
21
22
23%include "iprt/asmdefs.mac"
24
25BEGINCODE
26
27%ifdef __AMD64__
28 %define _SP rsp
29 %define _BP rbp
30 %define _S 8
31%else
32 %define _SP esp
33 %define _BP ebp
34 %define _S 4
35%endif
36
37;;
38; Round rd to the nearest integer value, rounding according to the current rounding direction.
39; @returns 32-bit: eax 64-bit: rax
40; @param lrd [rbp + _S*2]
41BEGINPROC RT_NOCRT(lrintl)
42 push _BP
43 mov _BP, _SP
44 sub _SP, 10h
45
46 fld tword [_BP + _S*2]
47%ifdef __AMD64__
48 fistp qword [_SP]
49 fwait
50 mov rax, [_SP]
51%else
52 fistp dword [_SP]
53 fwait
54 mov eax, [_SP]
55%endif
56
57 leave
58 ret
59ENDPROC RT_NOCRT(lrintl)
60
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