pqc/external/flint-2.4.3/ulong_extras/randlimb.c
2014-05-24 23:16:06 +02:00

51 lines
1.7 KiB
C

/*=============================================================================
This file is part of FLINT.
FLINT is free software; you can redistribute it and/or modify
it under the terms of 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.
FLINT 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 a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2009 William Hart
******************************************************************************/
#include <gmp.h>
#include "flint.h"
#include "ulong_extras.h"
#if FLINT64
mp_limb_t n_randlimb(flint_rand_t state)
{
state->__randval = (state->__randval*UWORD(13282407956253574709) + UWORD(286824421));
state->__randval2 = (state->__randval2*UWORD(7557322358563246341) + UWORD(286824421));
return (state->__randval>>32) + ((state->__randval2>>32) << 32);
}
#else
mp_limb_t n_randlimb(flint_rand_t state)
{
state->__randval = (state->__randval*UWORD(1543932465) + UWORD(1626832771));
state->__randval2 = (state->__randval2*UWORD(2495927737) + UWORD(1626832771));
return (state->__randval>>16) + ((state->__randval2>>16) << 16);
}
#endif