diff options
Diffstat (limited to 'REORG.TODO/sysdeps/i386/fpu/s_fmax.S')
| -rw-r--r-- | REORG.TODO/sysdeps/i386/fpu/s_fmax.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/fpu/s_fmax.S b/REORG.TODO/sysdeps/i386/fpu/s_fmax.S new file mode 100644 index 0000000000..218dcef421 --- /dev/null +++ b/REORG.TODO/sysdeps/i386/fpu/s_fmax.S @@ -0,0 +1,43 @@ +/* Compute maximum of two numbers, regarding NaN as missing argument. + Copyright (C) 1997-2017 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, see + <http://www.gnu.org/licenses/>. */ + +#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) |