arb/arf/test/t-set_fmpz_2exp.c

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2014-04-27 00:32:37 +02:00
/*=============================================================================
This file is part of ARB.
ARB 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.
ARB 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 ARB; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2012 Fredrik Johansson
******************************************************************************/
#include "arf.h"
int main()
{
long iter;
flint_rand_t state;
printf("set_fmpz_2exp....");
fflush(stdout);
flint_randinit(state);
/* test exact roundtrip R -> Q -> R */
for (iter = 0; iter < 100000; iter++)
{
long bits;
arf_t x, z;
fmpz_t y, e;
bits = 2 + n_randint(state, 200);
arf_init(x);
arf_init(z);
fmpz_init(y);
fmpz_init(e);
arf_randtest(x, state, bits, 1 + n_randint(state, 100));
arf_randtest(z, state, bits, 1 + n_randint(state, 100));
arf_get_fmpz_2exp(y, e, x);
arf_set_fmpz_2exp(z, y, e);
if (!arf_equal(x, z))
{
printf("FAIL\n\n");
printf("bits: %ld\n", bits);
printf("x = "); arf_print(x); printf("\n\n");
printf("y = "); fmpz_print(y); printf("\n\n");
printf("e = "); fmpz_print(e); printf("\n\n");
printf("z = "); arf_print(z); printf("\n\n");
abort();
}
arf_clear(x);
arf_clear(z);
fmpz_clear(y);
fmpz_clear(e);
}
flint_randclear(state);
flint_cleanup();
printf("PASS\n");
return EXIT_SUCCESS;
}