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Cream of the Crop 1
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Cream of the Crop 1.iso
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PROGRAM
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DJLSR106.ARJ
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FLOOR.S
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1991-05-28
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917b
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38 lines
/* This is file FLOOR.S */
/*
** Copyright (C) 1991 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954
**
** This file is distributed under the terms listed in the document
** "copying.dj", available from DJ Delorie at the address above.
** A copy of "copying.dj" should accompany this file; if not, a copy
** should be available from where this file was obtained. This file
** may not be distributed without a verbatim copy of "copying.dj".
**
** This file is distributed WITHOUT ANY WARRANTY; without even the implied
** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
.globl _floor
_floor:
pushl %ebp
movl %esp,%ebp
sub $8,%esp /* -4 = old CW, -2 = new CW */
fstcw -4(%ebp)
fwait
movw -4(%ebp),%ax
andw $0xf3ff,%ax
orw $0x0400,%ax
movw %ax,-2(%ebp)
fldcww -2(%ebp)
fldl 8(%ebp)
frndint
fldcww -4(%ebp)
movl %ebp,%esp
popl %ebp
ret