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/*
Copyright (C) 2009 William Hart
Copyright (C) 2013 Fredrik Johansson
This file is part of Arb.
Arb is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version. See <http://www.gnu.org/licenses/>.
*/
#include "arb_poly.h"
int
main(void)
{
int i, result;
flint_rand_t state;
flint_printf("shift_left/right....");
fflush(stdout);
flint_randinit(state);
/* Check aliasing of a and b for left shift */
for (i = 0; i < 1000; i++)
{
arb_poly_t a, b;
slong shift = n_randint(state, 100);
arb_poly_init(a);
arb_poly_init(b);
arb_poly_randtest(a, state, n_randint(state, 100), 2 + n_randint(state, 200), 10);
arb_poly_shift_left(b, a, shift);
arb_poly_shift_left(a, a, shift);
result = (arb_poly_equal(a, b));
if (!result)
{
flint_printf("FAIL:\n");
arb_poly_printd(a, 10), flint_printf("\n\n");
arb_poly_printd(b, 10), flint_printf("\n\n");
flint_abort();
}
arb_poly_clear(a);
arb_poly_clear(b);
}
/* Check aliasing of a and b for right shift */
for (i = 0; i < 1000; i++)
{
arb_poly_t a, b;
slong shift = n_randint(state, 100);
arb_poly_init(a);
arb_poly_init(b);
arb_poly_randtest(a, state, n_randint(state, 100), 2 + n_randint(state, 200), 10);
arb_poly_shift_right(b, a, shift);
arb_poly_shift_right(a, a, shift);
result = (arb_poly_equal(a, b));
if (!result)
{
flint_printf("FAIL:\n");
arb_poly_printd(a, 10), flint_printf("\n\n");
arb_poly_printd(b, 10), flint_printf("\n\n");
flint_abort();
}
arb_poly_clear(a);
arb_poly_clear(b);
}
/* Check shift left then right does nothing */
for (i = 0; i < 1000; i++)
{
arb_poly_t a, b, c;
slong shift = n_randint(state, 100);
arb_poly_init(a);
arb_poly_init(b);
arb_poly_init(c);
arb_poly_randtest(a, state, n_randint(state, 100), 2 + n_randint(state, 200), 10);
arb_poly_shift_left(b, a, shift);
arb_poly_shift_right(c, b, shift);
result = (arb_poly_equal(c, a));
if (!result)
{
flint_printf("FAIL:\n");
arb_poly_printd(a, 10), flint_printf("\n\n");
arb_poly_printd(b, 10), flint_printf("\n\n");
arb_poly_printd(c, 10), flint_printf("\n\n");
flint_abort();
}
arb_poly_clear(a);
arb_poly_clear(b);
arb_poly_clear(c);
}
flint_randclear(state);
flint_cleanup();
flint_printf("PASS\n");
return 0;
}
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