array_init.c
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上传日期:2022-08-06
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- /* mpz_array_init (array, array_size, size_per_elem) --
- Copyright 1991, 1993, 1994, 1995, 2000, 2001, 2002 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 Lesser General Public License as published by
- the Free Software Foundation; either version 3 of the License, 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 Lesser General Public
- License for more details.
- You should have received a copy of the GNU Lesser General Public License
- along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
- #include "gmp.h"
- #include "gmp-impl.h"
- void
- mpz_array_init (mpz_ptr arr, mp_size_t arr_size, mp_size_t nbits)
- {
- register mp_ptr p;
- register mp_size_t i;
- mp_size_t nlimbs;
- nlimbs = (nbits + GMP_NUMB_BITS - 1) / GMP_NUMB_BITS;
- p = (mp_ptr) (*__gmp_allocate_func) (arr_size * nlimbs * BYTES_PER_MP_LIMB);
- for (i = 0; i < arr_size; i++)
- {
- arr[i]._mp_alloc = nlimbs + 1; /* Yes, lie a little... */
- arr[i]._mp_size = 0;
- arr[i]._mp_d = p + i * nlimbs;
- }
- }