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Annotation of OpenXM_contrib/gmp/mpz/realloc2.c, Revision 1.1.1.1

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: }