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Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpz/realloc.c')
-rw-r--r-- | Build/source/libs/gmp/gmp-6.0.0/mpz/realloc.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpz/realloc.c b/Build/source/libs/gmp/gmp-6.0.0/mpz/realloc.c new file mode 100644 index 00000000000..3d2755ca0a1 --- /dev/null +++ b/Build/source/libs/gmp/gmp-6.0.0/mpz/realloc.c @@ -0,0 +1,71 @@ +/* _mpz_realloc -- make the mpz_t have NEW_ALLOC digits allocated. + +Copyright 1991, 1993-1995, 2000, 2001, 2008 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 either: + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at your + option) any later version. + +or + + * the GNU General Public License as published by the Free Software + Foundation; either version 2 of the License, or (at your option) any + later version. + +or both in parallel, as here. + +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 copies of the GNU General Public License and the +GNU Lesser General Public License along with the GNU MP Library. If not, +see https://www.gnu.org/licenses/. */ + +#include <stdlib.h> +#include <stdio.h> +#include "gmp.h" +#include "gmp-impl.h" + +void * +_mpz_realloc (mpz_ptr m, mp_size_t new_alloc) +{ + mp_ptr mp; + + /* Never allocate zero space. */ + new_alloc = MAX (new_alloc, 1); + + if (sizeof (mp_size_t) == sizeof (int)) + { + if (UNLIKELY (new_alloc > ULONG_MAX / GMP_NUMB_BITS)) + { + fprintf (stderr, "gmp: overflow in mpz type\n"); + abort (); + } + } + else + { + if (UNLIKELY (new_alloc > INT_MAX)) + { + fprintf (stderr, "gmp: overflow in mpz type\n"); + abort (); + } + } + + mp = __GMP_REALLOCATE_FUNC_LIMBS (PTR(m), ALLOC(m), new_alloc); + PTR(m) = mp; + ALLOC(m) = new_alloc; + + /* Don't create an invalid number; if the current value doesn't fit after + reallocation, clear it to 0. */ + if (ABSIZ(m) > new_alloc) + SIZ(m) = 0; + + return (void *) mp; +} |