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/*
support.c: various support routines for test, profiling and tuning code
Copyright (C) 2007, 2008, David Harvey
This file is part of the zn_poly library (version 0.9).
This program 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) version 3 of the License.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "support.h"
unsigned test_bitsizes[] = {2, 3, 8,
ULONG_BITS/2 - 1, ULONG_BITS/2, ULONG_BITS/2 + 1,
ULONG_BITS - 2, ULONG_BITS - 1, ULONG_BITS};
unsigned num_test_bitsizes = sizeof (test_bitsizes) / sizeof (unsigned);
gmp_randstate_t randstate;
void
mpz_to_mpn (mp_limb_t* res, size_t n, const mpz_t op)
{
ZNP_ASSERT (mpz_size (op) <= n);
size_t count_p;
mpz_export (res, &count_p, -1, sizeof (mp_limb_t), 0, GMP_NAIL_BITS, op);
// zero-pad remaining buffer
for (; count_p < n; count_p++)
res[count_p] = 0;
}
void
mpn_to_mpz (mpz_t res, const mp_limb_t* op, size_t n)
{
ZNP_ASSERT (n >= 1);
mpz_import (res, n, -1, sizeof (mp_limb_t), 0, GMP_NAIL_BITS, op);
}
ulong
random_ulong (ulong max)
{
return gmp_urandomm_ui (randstate, max);
}
ulong
random_ulong_bits (unsigned b)
{
return gmp_urandomb_ui (randstate, b);
}
ulong
random_modulus (unsigned b, int require_odd)
{
ZNP_ASSERT(b >= 2 && b <= ULONG_BITS);
if (require_odd)
{
if (b == 2)
return 3;
return (1UL << (b - 1)) + 2 * random_ulong_bits (b - 2) + 1;
}
else
return (1UL << (b - 1)) + random_ulong_bits (b - 1);
}
void
zn_array_print (const ulong* x, size_t n)
{
size_t i;
printf ("[");
for (i = 0; i < n; i++)
{
if (i)
printf (", ");
printf ("%lu", x[i]);
}
printf ("]");
}
void
ZNP_mpn_random2 (mp_limb_t* res, size_t n)
{
size_t i;
mpn_random2 (res, n);
if (random_ulong (2))
for (i = 0; i < n; i++)
res[i] ^= GMP_NUMB_MASK;
}
// end of file ****************************************************************
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