matherr.c   [plain text]

/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
     Written by James Clark (jjc@jclark.com)

This file is part of groff.

groff is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.

groff 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 General Public License
for more details.

You should have received a copy of the GNU General Public License along
with groff; see the file COPYING.  If not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */

#include <math.h>
#include <errno.h>

#ifdef HAVE_STRUCT_EXCEPTION
#ifdef TLOSS

int matherr(exc)
struct exception *exc;
{
  switch (exc->type) {
  case SING:
  case DOMAIN:
    errno = EDOM;
    break;
  case OVERFLOW:
  case UNDERFLOW:
  case TLOSS:
  case PLOSS:
    errno = ERANGE;
    break;
  }
  return 1;
}

#endif /* TLOSS */
#endif /* HAVE_STRUCT_EXCEPTION */