1 /*
2 * Written by J.T. Conklin <jtc@netbsd.org>.
3 * Public domain.
4 */
6 #include <machine/asm.h>
8 __FBSDID("$FreeBSD: src/lib/msun/i387/s_floorf.S,v 1.2 2005/05/06 15:44:20 deischen Exp $");
9 /* RCSID("$NetBSD: s_floorf.S,v 1.3 1995/05/09 00:04:32 jtc Exp $") */
11 ENTRY(floorf)
12 pushl %ebp
13 movl %esp,%ebp
14 subl $8,%esp
16 fstcw -4(%ebp) /* store fpu control word */
17 movw -4(%ebp),%dx
18 orw $0x0400,%dx /* round towards -oo */
19 andw $0xf7ff,%dx
20 movw %dx,-8(%ebp)
21 fldcw -8(%ebp) /* load modfied control word */
23 flds 8(%ebp); /* round */
24 frndint
26 fldcw -4(%ebp) /* restore original control word */
28 leave
29 ret