mirror of
https://github.com/vale981/arb
synced 2025-03-06 09:51:39 -05:00
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*
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Copyright (C) 2013 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 "acb.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("expm1....");
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fflush(stdout);
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flint_randinit(state);
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for (iter = 0; iter < 2000 * arb_test_multiplier(); iter++)
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{
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acb_t x, a, b;
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slong prec1, prec2;
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prec1 = 2 + n_randint(state, 400);
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prec2 = 2 + n_randint(state, 400);
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acb_init(x);
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acb_init(a);
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acb_init(b);
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acb_randtest_special(x, state, 1 + n_randint(state, 1000), 2 + n_randint(state, 100));
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acb_randtest_special(a, state, 1 + n_randint(state, 1000), 2 + n_randint(state, 100));
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acb_randtest_special(b, state, 1 + n_randint(state, 1000), 2 + n_randint(state, 100));
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acb_expm1(a, x, prec1);
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acb_set(b, x); /* also test aliasing */
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acb_expm1(b, b, prec2);
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/* check consistency */
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if (!acb_overlaps(a, b))
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{
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flint_printf("FAIL: overlap\n\n");
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flint_printf("x = "); acb_printd(x, 15); flint_printf("\n\n");
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flint_printf("a = "); acb_printd(a, 15); flint_printf("\n\n");
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flint_printf("b = "); acb_printd(b, 15); flint_printf("\n\n");
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flint_abort();
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}
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/* check expm1(x) = exp(x)-1 */
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acb_exp(b, x, prec2);
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acb_sub_ui(b, b, 1, prec2);
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if (!acb_overlaps(a, b))
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{
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flint_printf("FAIL: expm1 vs exp\n\n");
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flint_printf("x = "); acb_printd(x, 15); flint_printf("\n\n");
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flint_printf("a = "); acb_printd(a, 15); flint_printf("\n\n");
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flint_printf("b = "); acb_printd(b, 15); flint_printf("\n\n");
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flint_abort();
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}
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acb_clear(x);
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acb_clear(a);
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acb_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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