45 lines
1.2 KiB
ArmAsm
45 lines
1.2 KiB
ArmAsm
/* Compute maximum of two numbers, regarding NaN as missing argument.
|
|
Copyright (C) 1997 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(__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)
|
|
weak_alias (__fmax, fmax)
|