mirror of
https://github.com/vale981/arb
synced 2025-03-05 17:31:38 -05:00
97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/*
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Copyright (C) 2012 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("normalise....");
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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, xcopy, y, err_bound, err;
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slong prec, ret1, ret2, bits, ebits;
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fmpr_rnd_t rnd;
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fmpr_init(x);
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fmpr_init(xcopy);
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fmpr_init(y);
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fmpr_init(err_bound);
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fmpr_init(err);
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bits = 2 + n_randint(state, 2000);
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ebits = 2 + n_randint(state, 200);
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fmpz_randtest_not_zero(fmpr_manref(x), state, bits);
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fmpz_randtest(fmpr_expref(x), state, ebits);
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fmpz_set(fmpr_manref(y), fmpr_manref(x));
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fmpz_set(fmpr_expref(y), fmpr_expref(x));
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fmpr_set(xcopy, x);
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switch (n_randint(state, 4))
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{
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case 0: rnd = FMPR_RND_DOWN; break;
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case 1: rnd = FMPR_RND_UP; break;
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case 2: rnd = FMPR_RND_FLOOR; break;
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default: rnd = FMPR_RND_CEIL; break;
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}
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prec = 2 + n_randint(state, 2000);
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ret1 = _fmpr_normalise(fmpr_manref(x), fmpr_expref(x), prec, rnd);
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ret2 = _fmpr_normalise_naive(fmpr_manref(y), fmpr_expref(y), prec, rnd);
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if (!fmpr_equal(x, y) || ret1 != ret2)
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{
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flint_printf("FAIL!\n");
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flint_printf("x = "); fmpr_print(x); flint_printf("\n\n");
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flint_printf("y = "); fmpr_print(y); flint_printf("\n\n");
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flint_printf("ret1 = %wd, ret2 = %wd\n", ret1, ret2);
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flint_abort();
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}
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fmpr_sub(err, x, xcopy, FMPR_PREC_EXACT, FMPR_RND_DOWN);
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fmpr_abs(err, err);
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fmpr_set_error_result(err_bound, x, ret1);
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if (fmpr_cmp(err, err_bound) > 0)
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{
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flint_printf("FAIL (error bound)!\n");
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flint_printf("x (original) = "); fmpr_print(xcopy); flint_printf("\n\n");
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flint_printf("x = "); fmpr_print(x); flint_printf("\n\n");
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flint_printf("error: "); fmpr_print(err); flint_printf("\n\n");
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flint_printf("error bound: "); fmpr_print(err_bound); flint_printf("\n\n");
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flint_printf("ret = %wd\n", ret1);
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flint_abort();
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}
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fmpr_clear(x);
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fmpr_clear(xcopy);
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fmpr_clear(y);
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fmpr_clear(err_bound);
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fmpr_clear(err);
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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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