lrint.asm revision a4d7fc6f54717c342281099fe14f5666be9b7921
; $Id$
;; @file
; innotek Portable Runtime - No-CRT lrint - AMD64 & X86.
;
;
; Copyright (C) 2006-2007 innotek GmbH
;
; 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 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.
;
; If you received this file as part of a commercial VirtualBox
; distribution, then only the terms of your commercial VirtualBox
; license agreement apply instead of the previous paragraph.
;
%include "iprt/asmdefs.mac"
BEGINCODE
;;
; Round rd to the nearest integer value, rounding according to the current rounding direction.
; @returns 32-bit: eax 64-bit: rax
; @param rd 32-bit: [esp + 4h] 64-bit: xmm0
BEGINPROC RT_NOCRT(lrint)
%ifdef RT_ARCH_AMD64
cvtsd2si rax, xmm0
%else
push ebp
mov ebp, esp
sub esp, 8h
fld qword [ebp + 8h]
fistp dword [esp]
fwait
mov eax, [esp]
leave
%endif
ret
ENDPROC RT_NOCRT(lrint)