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Diffstat (limited to 'Build/source/libs/gmp/gmp-6.0.0/mpz/realloc2.c')
-rw-r--r-- | Build/source/libs/gmp/gmp-6.0.0/mpz/realloc2.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-6.0.0/mpz/realloc2.c b/Build/source/libs/gmp/gmp-6.0.0/mpz/realloc2.c new file mode 100644 index 00000000000..3ccfaab1f06 --- /dev/null +++ b/Build/source/libs/gmp/gmp-6.0.0/mpz/realloc2.c @@ -0,0 +1,60 @@ +/* mpz_realloc2 -- change allocated data size. + +Copyright 2001, 2002, 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_realloc2 (mpz_ptr m, mp_bitcnt_t bits) +{ + mp_size_t new_alloc; + + bits -= (bits != 0); /* Round down, except if 0 */ + new_alloc = 1 + bits / GMP_NUMB_BITS; + + if (sizeof (unsigned long) > sizeof (int)) /* param vs _mp_size field */ + { + if (UNLIKELY (new_alloc > INT_MAX)) + { + fprintf (stderr, "gmp: overflow in mpz type\n"); + abort (); + } + } + + PTR(m) = __GMP_REALLOCATE_FUNC_LIMBS (PTR(m), ALLOC(m), new_alloc); + 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; +} |