blob: bfc6a3e80a5045df38391e783e9d3f4e323e453b (
plain) (
blame)
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
43
|
/* Compute maximum of two numbers, regarding NaN as missing argument.
Copyright (C) 1997-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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, see
<https://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <libm-alias-double.h>
.text
ENTRY(__fmax)
fldl 12(%esp) // y
fxam
fnstsw
fldl 4(%esp) // y : x
andb $0x45, %ah
cmpb $0x01, %ah
je 1f // y == NaN
fucom %st(1)
fnstsw
sahf
jnc 1f
fxch %st(1)
1: fstp %st(1)
ret
END(__fmax)
libm_alias_double (__fmax, fmax)
|
