src/libs/libgroff/matherr.c

   1 /* Copyright (C) 1989, 1990, 1991, 1992, 2001 Free Software Foundation, Inc.
   2      Written by James Clark (jjc@jclark.com)
   3
   4 This file is part of groff.
   5
   6 groff is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 2, or (at your option) any later
   9 version.
  10
  11 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License along
  17 with groff; see the file COPYING.  If not, write to the Free Software
  18 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #include <math.h>
  25 #include <errno.h>
  26
  27 #ifdef HAVE_STRUCT_EXCEPTION
  28 #ifdef TLOSS
  29
  30 int matherr(exc)
  31 struct exception *exc;
  32 {
  33   switch (exc->type) {
  34   case SING:
  35   case DOMAIN:
  36     errno = EDOM;
  37     break;
  38   case OVERFLOW:
  39   case UNDERFLOW:
  40   case TLOSS:
  41   case PLOSS:
  42     errno = ERANGE;
  43     break;
  44   }
  45   return 1;
  46 }
  47
  48 #endif /* TLOSS */
  49 #endif /* HAVE_STRUCT_EXCEPTION */