summaryrefslogtreecommitdiff
path: root/sysdeps/i386/i686/fpu/s_fdimf.S
blob: a22cbe9d6634e6570653023816f1f6f4153012c2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
/* Compute positive difference.
   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <sysdep.h>

	.text
ENTRY(__fdimf)
	flds	4(%esp)		// x
	flds	8(%esp)		// x : y

	fucomi	%st(1), %st
	jp	1f

	fsubrp	%st, %st(1)
	fldz
	fcomi	%st(1), %st
	fcmovb	%st(1), %st
	jmp	2f

1:	fucomi	%st(0), %st
	fcmovnu	%st(1), %st
2:	fstp	%st(1)
	ret
END(__fdimf)
weak_alias (__fdimf, fdimf)