mirror of
https://github.com/vale981/arb
synced 2025-03-06 01:41:39 -05:00
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*
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Copyright (C) 2014 Fredrik Johansson
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This file is part of Arb.
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Arb is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version. See <http://www.gnu.org/licenses/>.
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*/
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#include "fmpr.h"
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int main()
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{
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slong iter;
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flint_rand_t state;
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flint_printf("ulp....");
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fflush(stdout);
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flint_randinit(state);
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for (iter = 0; iter < 100000 * arb_test_multiplier(); iter++)
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{
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fmpr_t x, ulp, a, b;
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slong prec;
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fmpr_init(x);
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fmpr_init(ulp);
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fmpr_init(a);
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fmpr_init(b);
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prec = 2 + n_randint(state, 1000);
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fmpr_randtest_not_zero(x, state, 1 + n_randint(state, 1000),
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1 + n_randint(state, 100));
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fmpr_ulp(ulp, x, prec);
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fmpr_abs(a, x);
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fmpr_mul_2exp_si(a, a, -prec);
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fmpr_abs(b, x);
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fmpr_mul_2exp_si(b, b, -prec+1);
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if (!((fmpr_cmp(a, ulp) < 0) && (fmpr_cmp(ulp, b) <= 0)))
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{
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flint_printf("FAIL!\n");
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flint_printf("prec = %wd\n", prec);
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flint_printf("x = "); fmpr_print(x); flint_printf("\n");
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flint_printf("ulp = "); fmpr_print(ulp); flint_printf("\n");
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flint_printf("a = "); fmpr_print(a); flint_printf("\n");
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flint_printf("b = "); fmpr_print(b); flint_printf("\n");
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abort();
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}
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fmpr_clear(x);
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fmpr_clear(ulp);
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fmpr_clear(a);
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fmpr_clear(b);
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}
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flint_randclear(state);
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flint_cleanup();
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flint_printf("PASS\n");
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return EXIT_SUCCESS;
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}
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