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Annotation of OpenXM_contrib/gmp/mpz/realloc.c, Revision 1.1

1.1     ! maekawa     1: /* _mpz_realloc -- make the mpz_t have NEW_SIZE digits allocated.
        !             2:
        !             3: Copyright (C) 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
        !             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 Library General Public License as published by
        !             9: the Free Software Foundation; either version 2 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 Library General Public
        !            15: License for more details.
        !            16:
        !            17: You should have received a copy of the GNU Library 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:
        !            22: #include "gmp.h"
        !            23: #include "gmp-impl.h"
        !            24:
        !            25: void *
        !            26: #if __STDC__
        !            27: _mpz_realloc (mpz_ptr m, mp_size_t new_size)
        !            28: #else
        !            29: _mpz_realloc (m, new_size)
        !            30:      mpz_ptr m;
        !            31:      mp_size_t new_size;
        !            32: #endif
        !            33: {
        !            34:   /* Never allocate zero space. */
        !            35:   if (new_size == 0)
        !            36:     new_size = 1;
        !            37:
        !            38:   m->_mp_d = (mp_ptr) (*_mp_reallocate_func) (m->_mp_d,
        !            39:                                              m->_mp_alloc * BYTES_PER_MP_LIMB,
        !            40:                                              new_size * BYTES_PER_MP_LIMB);
        !            41:   m->_mp_alloc = new_size;
        !            42:
        !            43: #if 0
        !            44:   /* This might break some code that reads the size field after
        !            45:      reallocation, in the case the reallocated destination and a
        !            46:      source argument are identical.  */
        !            47:   if (ABS (m->_mp_size) > new_size)
        !            48:     m->_mp_size = 0;
        !            49: #endif
        !            50:
        !            51:   return (void *) m->_mp_d;
        !            52: }