53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/* _mpz_realloc -- make the mpz_t have NEW_SIZE digits allocated.
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Copyright (C) 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#include "gmp.h"
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#include "gmp-impl.h"
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void *
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#if __STDC__
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_mpz_realloc (mpz_ptr m, mp_size_t new_size)
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#else
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_mpz_realloc (m, new_size)
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mpz_ptr m;
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mp_size_t new_size;
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#endif
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{
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/* Never allocate zero space. */
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if (new_size == 0)
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new_size = 1;
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m->_mp_d = (mp_ptr) (*_mp_reallocate_func) (m->_mp_d,
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m->_mp_alloc * BYTES_PER_MP_LIMB,
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new_size * BYTES_PER_MP_LIMB);
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m->_mp_alloc = new_size;
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#if 0
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/* This might break some code that reads the size field after
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reallocation, in the case the reallocated destination and a
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source argument are identical. */
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if (ABS (m->_mp_size) > new_size)
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m->_mp_size = 0;
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#endif
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return (void *) m->_mp_d;
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}
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