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/* mpn_random -- Generate random numbers.
Copyright 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 https://www.gnu.org/licenses/. */
#include "gmp.h"
#include "gmp-impl.h"
void
mpn_random (mp_ptr ptr, mp_size_t size)
{
gmp_randstate_ptr rands;
/* FIXME: Is size==0 supposed to be allowed? */
ASSERT (size >= 0);
if (size == 0)
return;
rands = RANDS;
_gmp_rand (ptr, rands, size * GMP_NUMB_BITS);
/* Make sure the most significant limb is non-zero. */
while (ptr[size-1] == 0)
_gmp_rand (&ptr[size-1], rands, GMP_NUMB_BITS);
}
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