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/* _mpz_realloc -- make the MP_INT have NEW_SIZE digits allocated.
Copyright (C) 1991 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
The GNU MP Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the GNU MP Library; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "gmp.h"
#include "gmp-impl.h"
void *
#ifdef __STDC__
_mpz_realloc (MP_INT *m, mp_size new_size)
#else
_mpz_realloc (m, new_size)
MP_INT *m;
mp_size new_size;
#endif
{
/* Never allocate zero space. */
if (new_size == 0)
new_size = 1;
m->d = (mp_ptr) (*_mp_reallocate_func) (m->d, m->alloc * BYTES_PER_MP_LIMB,
new_size * BYTES_PER_MP_LIMB);
m->alloc = new_size;
#if 0
/* This might break some code that reads the size field after
reallocation, in the case the reallocated destination and a
source argument are identical. */
if (ABS (m->size) > new_size)
m->size = 0;
#endif
return (void *) m->d;
}
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