pqc/external/flint-2.4.3/fmpq/test/t-mul_2exp.c
2014-05-24 23:16:06 +02:00

155 lines
4.1 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) 2011 Fredrik Johansson
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <gmp.h>
#include "flint.h"
#include "fmpz.h"
#include "fmpq.h"
#include "ulong_extras.h"
int
main(void)
{
int i;
FLINT_TEST_INIT(state);
flint_printf("mul_2exp....");
fflush(stdout);
/* x = y * 2^exp */
for (i = 0; i < 10000; i++)
{
fmpq_t x, y;
mpq_t X, Y;
mp_bitcnt_t c;
fmpq_init(x);
fmpq_init(y);
mpq_init(X);
mpq_init(Y);
fmpq_randtest(x, state, 200);
fmpq_randtest(y, state, 200);
if (n_randint(state, 5) == 0)
fmpz_mul_2exp(fmpq_numref(y), fmpq_numref(y), n_randint(state, 200));
else if (n_randint(state, 5) == 0)
fmpz_mul_2exp(fmpq_denref(y), fmpq_denref(y), n_randint(state, 200));
fmpq_canonicalise(y);
c = n_randint(state, 200);
fmpq_mul_2exp(x, y, c);
if (!fmpq_is_canonical(x))
{
flint_printf("FAIL: result not canonical!\n");
flint_printf("x = ");
fmpq_print(x);
flint_printf("\ny = ");
fmpq_print(y);
flint_printf("\nc = %wu\n", c);
abort();
}
fmpq_get_mpq(X, x);
fmpq_get_mpq(Y, y);
mpq_mul_2exp(X, Y, c);
fmpq_get_mpq(Y, x);
if (!mpq_equal(X, Y))
{
flint_printf("FAIL: fmpq_mul_2exp(x,y,c) != mpq_mul_2exp(X,Y,c)\n");
flint_printf("x = ");
fmpq_print(x);
flint_printf("\ny = ");
fmpq_print(y);
flint_printf("\n");
abort();
}
fmpq_clear(x);
fmpq_clear(y);
mpq_clear(X);
mpq_clear(Y);
}
/* y = y * 2^exp */
for (i = 0; i < 10000; i++)
{
fmpq_t x, y;
mp_bitcnt_t c;
fmpq_init(x);
fmpq_init(y);
fmpq_randtest(x, state, 200);
fmpq_randtest(y, state, 200);
if (n_randint(state, 5) == 0)
fmpz_mul_2exp(fmpq_numref(y), fmpq_numref(y), n_randint(state, 200));
else if (n_randint(state, 5) == 0)
fmpz_mul_2exp(fmpq_denref(y), fmpq_denref(y), n_randint(state, 200));
fmpq_canonicalise(y);
c = n_randint(state, 200);
fmpq_mul_2exp(x, y, c);
fmpq_mul_2exp(y, y, c);
if (!fmpq_is_canonical(y))
{
flint_printf("FAIL: result not canonical!\n");
flint_printf("x = ");
fmpq_print(x);
flint_printf("\ny = ");
fmpq_print(y);
flint_printf("\nc = %wu\n", c);
abort();
}
if (!fmpq_equal(x, y))
{
flint_printf("FAIL: fmpq_mul_2exp(x,y,c) != fmpq_mul_2exp(y,y,c)\n");
flint_printf("x = ");
fmpq_print(x);
flint_printf("\ny = ");
fmpq_print(y);
flint_printf("\nc = %wu\n", c);
abort();
}
fmpq_clear(x);
fmpq_clear(y);
}
FLINT_TEST_CLEANUP(state);
flint_printf("PASS\n");
return 0;
}