Update.
[glibc.git] / sysdeps / libm-ieee754 / s_fdiml.c
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1 /* Return positive difference between arguments.
2 Copyright (C) 1997 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public License as
8 published by the Free Software Foundation; either version 2 of the
9 License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public
17 License along with the GNU C Library; see the file COPYING.LIB. If not,
18 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 #include <math.h>
23 long double
24 __fdiml (long double x, long double y)
26 int clsx = fpclassify (x);
27 int clsy = fpclassify (y);
29 if (clsx == FP_NAN || clsy == FP_NAN
30 || (y < 0 && clsx == FP_INFINITE && clsy == FP_INFINITE))
31 /* Raise invalid flag. */
32 return x - y;
34 return x < y ? 0 : x - y;
36 weak_alias (__fdiml, fdiml)