diff options
Diffstat (limited to 'sysdeps/libm-i387/s_floor.S')
| -rw-r--r-- | sysdeps/libm-i387/s_floor.S | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/sysdeps/libm-i387/s_floor.S b/sysdeps/libm-i387/s_floor.S index 561f83d98a..20a8660424 100644 --- a/sysdeps/libm-i387/s_floor.S +++ b/sysdeps/libm-i387/s_floor.S @@ -8,23 +8,25 @@ RCSID("$NetBSD: s_floor.S,v 1.4 1995/05/09 00:01:59 jtc Exp $") ENTRY(__floor) - pushl %ebp - movl %esp,%ebp + fldl 4(%esp) subl $8,%esp - fstcw -4(%ebp) /* store fpu control word */ - movw -4(%ebp),%dx - orw $0x0400,%dx /* round towards -oo */ - andw $0xf7ff,%dx - movw %dx,-8(%ebp) - fldcw -8(%ebp) /* load modified control word */ + fstcw 4(%esp) /* store fpu control word */ - fldl 8(%ebp); /* round */ - frndint + /* We use here %edx although only the low 1 bits are defined. + But none of the operations should care and they are faster + than the 16 bit operations. */ + movl $0x400,%edx /* round towards -oo */ + orl 4(%esp),%edx + andl $0xf7ff,%edx + movl %edx,(%esp) + fldcw (%esp) /* load modified control word */ - fldcw -4(%ebp) /* restore original control word */ + frndint /* round */ - leave + fldcw 4(%esp) /* restore original control word */ + + addl $8,%esp ret END (__floor) weak_alias (__floor, floor) |