51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
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/* _mpz_realloc -- make the MP_INT have NEW_SIZE digits allocated.
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Copyright (C) 1991 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 General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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The GNU MP Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the GNU MP Library; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, 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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#ifdef __STDC__
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_mpz_realloc (MP_INT *m, mp_size new_size)
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#else
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_mpz_realloc (m, new_size)
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MP_INT *m;
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mp_size 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->d = (mp_ptr) (*_mp_reallocate_func) (m->d, m->alloc * BYTES_PER_MP_LIMB,
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new_size * BYTES_PER_MP_LIMB);
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m->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->size) > new_size)
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m->size = 0;
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#endif
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return (void *) m->d;
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}
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