VirtualBox

source: vbox/trunk/src/VBox/Runtime/math/llrintf.asm@ 1313

Last change on this file since 1313 was 1, checked in by vboxsync, 55 years ago

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1; $Id: llrintf.asm 1 1970-01-01 00:00:00Z vboxsync $
2;; @file
3; InnoTek Portable Runtime - No-CRT llrintf - 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%include "iprt/asmdefs.mac"
23
24BEGINCODE
25
26;;
27; Round rd to the nearest integer value, rounding according to the current rounding direction.
28; @returns 32-bit: edx:eax 64-bit: rax
29; @param rf 32-bit: [esp + 4h] 64-bit: xmm0
30BEGINPROC RT_NOCRT(llrintf)
31%ifdef __AMD64__
32 cvtss2si rax, xmm0
33%else
34 push ebp
35 mov ebp, esp
36 sub esp, 8h
37
38 fld dword [ebp + 8h]
39 fistp qword [esp]
40 fwait
41 mov eax, [esp]
42 mov edx, [esp + 4]
43
44 leave
45%endif
46 ret
47ENDPROC RT_NOCRT(llrintf)
48
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