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diff --git a/sysdeps/libm-i387/i686/s_fdimf.S b/sysdeps/libm-i387/i686/s_fdimf.S
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+/* Compute positive difference.
+ 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sysdep.h>
+
+ .text
+ENTRY(__fdimf)
+ flds 4(%esp) // x
+ flds 8(%esp) // x : y
+
+ fucomi %st(1), %st
+ jp 1f
+
+ fsubp %st(1), %st
+ fldz
+ fcmovnb %st(1), %st
+ jmp 2f
+
+1: fucomi %st(0), %st
+ fcmovu %st, %st(1)
+2: fstp %st(1)
+ ret
+END(__fdimf)
+weak_alias (__fdimf, fdimf)