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Annotation of OpenXM_contrib/gmp/errno.c, Revision 1.1.1.2

1.1.1.2 ! ohara       1: /* gmp_errno, __gmp_exception -- exception handling and reporting.
1.1       maekawa     2:
1.1.1.2 ! ohara       3: Copyright 2000, 2001 Free Software Foundation, Inc.
1.1       maekawa     4:
                      5: This file is part of the GNU MP Library.
                      6:
                      7: The GNU MP Library is free software; you can redistribute it and/or modify
                      8: it under the terms of the GNU Lesser General Public License as published by
                      9: the Free Software Foundation; either version 2.1 of the License, or (at your
                     10: option) any later version.
                     11:
                     12: The GNU MP Library is distributed in the hope that it will be useful, but
                     13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     14: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
                     15: License for more details.
                     16:
                     17: You should have received a copy of the GNU Lesser General Public License
                     18: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     20: MA 02111-1307, USA. */
                     21:
1.1.1.2 ! ohara      22: #include <stdlib.h>
1.1       maekawa    23: #include "gmp.h"
                     24: #include "gmp-impl.h"
                     25:
                     26: int gmp_errno = 0;
1.1.1.2 ! ohara      27:
        !            28:
        !            29: /* The deliberate divide by zero triggers an exception on most systems.  On
        !            30:    those where it doesn't, for example power and powerpc, use abort instead.
        !            31:
        !            32:    Enhancement: Perhaps raise(SIGFPE) (or the same with kill()) would be
        !            33:    better than abort.  Perhaps it'd be possible to get the BSD style
        !            34:    FPE_INTDIV_TRAP parameter in there too.  */
        !            35:
        !            36: void
        !            37: __gmp_exception (int error_bit)
        !            38: {
        !            39:   gmp_errno |= error_bit;
        !            40:   __gmp_junk = 10 / __gmp_0;
        !            41:   abort ();
        !            42: }
        !            43:
        !            44:
        !            45: /* These functions minimize the amount of code required in functions raising
        !            46:    exceptions.  Since they're "noreturn" and don't take any parameters, a
        !            47:    test and call might even come out as a simple conditional jump.  */
        !            48: void
        !            49: __gmp_sqrt_of_negative (void)
        !            50: {
        !            51:   __gmp_exception (GMP_ERROR_SQRT_OF_NEGATIVE);
        !            52: }
        !            53: void
        !            54: __gmp_divide_by_zero (void)
        !            55: {
        !            56:   __gmp_exception (GMP_ERROR_DIVISION_BY_ZERO);
        !            57: }