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/*
Copyright (C) 2014 Fredrik Johansson
This file is part of FLINT.
FLINT 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 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "test_helpers.h"
#include "arf.h"
TEST_FUNCTION_START(arf_floor, state)
{
slong iter;
for (iter = 0; iter < 10000 * 0.1 * flint_test_multiplier(); iter++)
{
arf_t x, y;
int result;
arf_init(x);
arf_init(y);
arf_randtest_special(x, state, 2000, 100);
arf_randtest_special(y, state, 2000, 100);
arf_floor(y, x);
result = 1;
if (arf_is_int(x) || !arf_is_finite(x))
{
result = arf_equal(y, x);
}
else if (!arf_is_int(y))
{
result = 0;
}
else if (arf_cmp(y, x) >= 0)
{
result = 0;
}
else
{
arf_t s, t[3];
/* check floor(x) - x + 1 > 0 */
arf_init(s);
arf_init(t[0]);
arf_init(t[1]);
arf_init(t[2]);
arf_set(t[0], y);
arf_neg(t[1], x);
arf_one(t[2]);
arf_sum(s, (arf_ptr) t, 3, 32, ARF_RND_DOWN);
result = arf_sgn(s) > 0;
arf_clear(s);
arf_clear(t[0]);
arf_clear(t[1]);
arf_clear(t[2]);
}
if (!result)
{
flint_printf("FAIL!\n");
flint_printf("x = "); arf_print(x); flint_printf("\n\n");
flint_printf("y = "); arf_print(y); flint_printf("\n\n");
flint_abort();
}
arf_floor(x, x);
if (!arf_equal(x, y))
{
flint_printf("FAIL (aliasing)!\n");
flint_printf("x = "); arf_print(x); flint_printf("\n\n");
flint_printf("y = "); arf_print(y); flint_printf("\n\n");
flint_abort();
}
arf_clear(x);
arf_clear(y);
}
TEST_FUNCTION_END(state);
}