gcc/gmp/mpz/array_init.c

/* 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;
    }
}