60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/* gmp_errno, __gmp_exception -- exception handling and reporting.
|
|
|
|
THE FUNCTIONS IN THIS FILE, APART FROM gmp_errno, ARE FOR INTERNAL USE
|
|
ONLY. THEY'RE ALMOST CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR
|
|
DISAPPEAR COMPLETELY IN FUTURE GNU MP RELEASES.
|
|
|
|
Copyright 2000, 2001, 2003 Free Software Foundation, Inc.
|
|
|
|
This file is part of the GNU MP Library.
|
|
|
|
The GNU MP Library is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or (at your
|
|
option) any later version.
|
|
|
|
The GNU MP 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 Lesser General Public
|
|
License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with the GNU MP Library; see the file COPYING.LIB. If not, write to
|
|
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#include <stdlib.h>
|
|
#include "mpir.h"
|
|
#include "gmp-impl.h"
|
|
|
|
int gmp_errno = 0;
|
|
|
|
/* The deliberate divide by zero triggers an exception on most systems. On
|
|
those where it doesn't, for example power and powerpc, use abort instead.
|
|
|
|
Enhancement: Perhaps raise(SIGFPE) (or the same with kill()) would be
|
|
better than abort. Perhaps it'd be possible to get the BSD style
|
|
FPE_INTDIV_TRAP parameter in there too. */
|
|
|
|
void
|
|
__gmp_exception (int error_bit)
|
|
{
|
|
__gmp_junk = 10 / __gmp_0;
|
|
abort ();
|
|
}
|
|
|
|
|
|
/* These functions minimize the amount of code required in functions raising
|
|
exceptions. Since they're "noreturn" and don't take any parameters, a
|
|
test and call might even come out as a simple conditional jump. */
|
|
void
|
|
__gmp_sqrt_of_negative (void)
|
|
{
|
|
__gmp_exception (GMP_ERROR_SQRT_OF_NEGATIVE);
|
|
}
|
|
void
|
|
__gmp_divide_by_zero (void)
|
|
{
|
|
__gmp_exception (GMP_ERROR_DIVISION_BY_ZERO);
|
|
}
|