1/* Compute maximum of two numbers, regarding NaN as missing argument.
2   Copyright (C) 1997-2022 Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
4
5   The GNU C Library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public
7   License as published by the Free Software Foundation; either
8   version 2.1 of the License, or (at your option) any later version.
9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library; if not, see
17   <https://www.gnu.org/licenses/>.  */
18
19#include <sysdep.h>
20#include <libm-alias-float.h>
21
22	.text
23ENTRY(__fmaxf)
24	flds	8(%esp)		// y
25	fxam
26	fnstsw
27	flds	4(%esp)		// y : x
28
29	andb	$0x45, %ah
30	cmpb	$0x01, %ah
31	je	1f		// y == NaN
32
33	fucom	%st(1)
34	fnstsw
35	sahf
36	jnc	1f
37
38	fxch	%st(1)
391:	fstp	%st(1)
40
41	ret
42END(__fmaxf)
43libm_alias_float (__fmax, fmax)
44