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Annotation of OpenXM_contrib/gmp/mpz/realloc2.c, Revision 1.1

1.1     ! ohara       1: /* mpz_realloc2 -- change allocated data size.
        !             2:
        !             3: Copyright 2001, 2002 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 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:
        !            22: #include "gmp.h"
        !            23: #include "gmp-impl.h"
        !            24:
        !            25: void
        !            26: mpz_realloc2 (mpz_ptr m, unsigned long bits)
        !            27: {
        !            28:   mp_ptr mp;
        !            29:   mp_size_t new_alloc;
        !            30:
        !            31:   new_alloc = (bits + GMP_NUMB_BITS-1) / GMP_NUMB_BITS;
        !            32:
        !            33:   /* Never allocate zero space. */
        !            34:   new_alloc = MAX (new_alloc, 1);
        !            35:
        !            36:   mp = __GMP_REALLOCATE_FUNC_LIMBS (PTR(m), ALLOC(m), new_alloc);
        !            37:   PTR(m) = mp;
        !            38:   ALLOC(m) = new_alloc;
        !            39:
        !            40:   /* Don't create an invalid number; if the current value doesn't fit after
        !            41:      reallocation, clear it to 0.  */
        !            42:   if (ABSIZ(m) > new_alloc)
        !            43:     SIZ(m) = 0;
        !            44: }