mirror of
https://github.com/vale981/arb
synced 2025-03-05 09:21:38 -05:00
6bf072eb59
This will allow us to not loose the julia session on error. See also https://github.com/wbhart/flint2/pull/243
136 lines
4.2 KiB
C
136 lines
4.2 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 "arf.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("set_round....");
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fflush(stdout);
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flint_randinit(state);
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{
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arf_t x, y, z;
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arf_init(x);
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arf_init(y);
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arf_init(z);
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for (iter = 0; iter < 100000 * arb_test_multiplier(); iter++)
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{
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slong bits1, bits2;
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int ret1, ret2;
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mpfr_t g1, g2;
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fmpz_t e;
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arf_rnd_t rnd;
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bits1 = 1 + n_randint(state, 1000);
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bits2 = 2 + n_randint(state, 1000);
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if (n_randint(state, 100) == 0)
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bits2 = ARF_PREC_EXACT;
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switch (n_randint(state, 5))
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{
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case 0: rnd = ARF_RND_DOWN; break;
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case 1: rnd = ARF_RND_UP; break;
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case 2: rnd = ARF_RND_FLOOR; break;
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case 3: rnd = ARF_RND_CEIL; break;
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default: rnd = ARF_RND_NEAR; break;
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}
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fmpz_init(e);
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mpfr_init2(g1, FLINT_MAX(2, bits1));
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mpfr_init2(g2, FLINT_MIN(bits2, 10000));
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if (n_randint(state, 100) == 0)
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{
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arf_clear(x); arf_clear(y); arf_clear(z);
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arf_init(x); arf_init(y); arf_init(z);
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}
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/* dirty output variables */
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if (n_randint(state, 2))
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{
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arf_randtest_special(y, state, 1 + n_randint(state, 1000),
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1 + n_randint(state, 100));
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arf_randtest_special(z, state, 1 + n_randint(state, 1000),
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1 + n_randint(state, 100));
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}
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arf_randtest_special(x, state, bits1, 1 + n_randint(state, 10));
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arf_get_mpfr(g1, x, MPFR_RNDD); /* exact */
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/* test large exponents */
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if (n_randint(state, 4) == 0)
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fmpz_randtest(e, state, 1 + n_randint(state, 100));
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if (!arf_is_special(x))
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fmpz_add(ARF_EXPREF(x), ARF_EXPREF(x), e);
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ret1 = arf_set_round(y, x, bits2, rnd);
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ret2 = mpfr_set(g2, g1, arf_rnd_to_mpfr(rnd));
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arf_set_mpfr(z, g2);
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if (!arf_is_special(y))
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fmpz_sub(ARF_EXPREF(y), ARF_EXPREF(y), e);
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if (!arf_equal(y, z) || ((ret1 == ARF_RESULT_EXACT) != (ret2 == 0)))
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{
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flint_printf("FAIL\n\n");
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flint_printf("bits1: %wd\n", bits1);
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flint_printf("bits2: %wd\n", bits2);
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flint_printf("x = "); arf_print(x); flint_printf("\n\n");
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flint_printf("y = "); arf_print(y); flint_printf("\n\n");
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flint_printf("z = "); arf_print(z); flint_printf("\n\n");
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flint_printf("ret1 = %d, ret2 = %d\n\n", ret1, ret2);
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flint_abort();
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}
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if (!arf_is_special(x))
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fmpz_add(ARF_EXPREF(x), ARF_EXPREF(x), e);
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ret1 = arf_set_round(y, x, bits2, rnd);
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arf_set(z, x);
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ret2 = arf_set_round(z, z, bits2, rnd);
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if (!arf_equal(y, z) || ret1 != ret2)
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{
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flint_printf("FAIL (aliasing)\n\n");
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flint_printf("bits1: %wd\n", bits1);
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flint_printf("bits2: %wd\n", bits2);
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flint_printf("x = "); arf_print(x); flint_printf("\n\n");
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flint_printf("y = "); arf_print(y); flint_printf("\n\n");
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flint_printf("z = "); arf_print(z); flint_printf("\n\n");
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flint_printf("ret1 = %d, ret2 = %d\n\n", ret1, ret2);
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flint_abort();
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}
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mpfr_clear(g1);
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mpfr_clear(g2);
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fmpz_clear(e);
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}
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arf_clear(x);
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arf_clear(y);
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arf_clear(z);
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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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