matherr.c revision 75584 
1/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
2     Written by James Clark (jjc@jclark.com)
3
4This file is part of groff.
5
6groff is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 2, or (at your option) any later
9version.
10
11groff is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License along
17with groff; see the file COPYING.  If not, write to the Free Software
18Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20#include <math.h>
21#include <errno.h>
22
23#ifdef HAVE_STRUCT_EXCEPTION
24#ifdef TLOSS
25
26int matherr(exc)
27struct exception *exc;
28{
29  switch (exc->type) {
30  case SING:
31  case DOMAIN:
32    errno = EDOM;
33    break;
34  case OVERFLOW:
35  case UNDERFLOW:
36  case TLOSS:
37  case PLOSS:
38    errno = ERANGE;
39    break;
40  }
41  return 1;
42}
43
44#endif /* TLOSS */
45#endif /* HAVE_STRUCT_EXCEPTION */
46