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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;
- }
-