aboutsummaryrefslogtreecommitdiff
path: root/REORG.TODO/sysdeps/i386/i686/fpu/s_fmaxf.S
diff options
context:
space:
mode:
Diffstat (limited to 'REORG.TODO/sysdeps/i386/i686/fpu/s_fmaxf.S')
-rw-r--r--REORG.TODO/sysdeps/i386/i686/fpu/s_fmaxf.S39
1 files changed, 39 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/i686/fpu/s_fmaxf.S b/REORG.TODO/sysdeps/i386/i686/fpu/s_fmaxf.S
new file mode 100644
index 0000000000..3a25951a09
--- /dev/null
+++ b/REORG.TODO/sysdeps/i386/i686/fpu/s_fmaxf.S
@@ -0,0 +1,39 @@
+/* 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(__fmaxf)
+ flds 4(%esp) // x
+ flds 8(%esp) // x : y
+
+ fucomi %st(0), %st
+ fcmovu %st(1), %st // now %st contains y if not NaN, x otherwise
+
+ fxch
+
+ fucomi %st(1), %st
+ fcmovb %st(1), %st
+
+ fstp %st(1)
+
+ ret
+END(__fmaxf)
+weak_alias (__fmaxf, fmaxf)