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/*
Copyright (C) 2014 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 "fmpr.h"
int main()
{
slong iter;
flint_rand_t state;
flint_printf("ulp....");
fflush(stdout);
flint_randinit(state);
for (iter = 0; iter < 10000 * arb_test_multiplier(); iter++)
{
fmpr_t x, ulp, a, b;
slong prec;
fmpr_init(x);
fmpr_init(ulp);
fmpr_init(a);
fmpr_init(b);
prec = 2 + n_randint(state, 1000);
fmpr_randtest_not_zero(x, state, 1 + n_randint(state, 1000),
1 + n_randint(state, 100));
fmpr_ulp(ulp, x, prec);
fmpr_abs(a, x);
fmpr_mul_2exp_si(a, a, -prec);
fmpr_abs(b, x);
fmpr_mul_2exp_si(b, b, -prec+1);
if (!((fmpr_cmp(a, ulp) < 0) && (fmpr_cmp(ulp, b) <= 0)))
{
flint_printf("FAIL!\n");
flint_printf("prec = %wd\n", prec);
flint_printf("x = "); fmpr_print(x); flint_printf("\n");
flint_printf("ulp = "); fmpr_print(ulp); flint_printf("\n");
flint_printf("a = "); fmpr_print(a); flint_printf("\n");
flint_printf("b = "); fmpr_print(b); flint_printf("\n");
flint_abort();
}
fmpr_clear(x);
fmpr_clear(ulp);
fmpr_clear(a);
fmpr_clear(b);
}
flint_randclear(state);
flint_cleanup();
flint_printf("PASS\n");
return EXIT_SUCCESS;
}
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