pqc/external/flint-2.4.3/fmpq/test/t-pow_si.c
2014-05-24 23:16:06 +02:00

123 lines
3.1 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
Copyright (C) 2011 Sebastian Pancratz
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "long_extras.h"
#include "ulong_extras.h"
#include "fmpq.h"
int
main(void)
{
int i, result;
FLINT_TEST_INIT(state);
flint_printf("pow_si....");
fflush(stdout);
/* Check aliasing of a and b */
for (i = 0; i < 100000; i++)
{
fmpq_t a, b, c;
slong e;
fmpq_init(a);
fmpq_init(b);
fmpq_init(c);
fmpq_randtest(a, state, 100);
fmpq_set(b, a);
e = z_randint(state, 20);
fmpq_pow_si(c, b, e);
fmpq_pow_si(b, b, e);
result = fmpq_equal(b, c);
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("a = "), fmpq_print(a), flint_printf("\n\n");
flint_printf("b = "), fmpq_print(b), flint_printf("\n\n");
flint_printf("c = "), fmpq_print(c), flint_printf("\n\n");
flint_printf("e = %wd\n", e);
abort();
}
fmpq_clear(a);
fmpq_clear(b);
fmpq_clear(c);
}
/* Compare with repeated multiplication */
for (i = 0; i < 10000; i++)
{
fmpq_t a, b, c;
slong j, e;
fmpq_init(a);
fmpq_init(b);
fmpq_init(c);
fmpq_randtest(a, state, 50);
e = z_randint(state, 20);
fmpq_pow_si(b, a, e);
fmpq_one(c);
for (j = 0; j < FLINT_ABS(e); j++)
fmpq_mul(c, c, a);
if (e < 0)
fmpq_inv(c, c);
result = fmpq_equal(b, c);
if (!result)
{
flint_printf("FAIL:\n");
flint_printf("a = "), fmpq_print(a), flint_printf("\n\n");
flint_printf("b = "), fmpq_print(b), flint_printf("\n\n");
flint_printf("c = "), fmpq_print(c), flint_printf("\n\n");
flint_printf("e = %wd\n", e);
abort();
}
fmpq_clear(a);
fmpq_clear(b);
fmpq_clear(c);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}