mirror of
https://github.com/vale981/arb
synced 2025-03-06 01:41:39 -05:00
87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
/*
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Copyright (C) 2016 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("frexp....");
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fflush(stdout);
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flint_randinit(state);
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for (iter = 0; iter < 10000 * arb_test_multiplier(); iter++)
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{
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arf_t x, y, z;
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fmpz_t e, f;
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int ok;
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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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fmpz_init(e);
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fmpz_init(f);
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arf_randtest_special(x, state, 200, 100);
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arf_randtest_special(y, state, 200, 100);
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fmpz_randtest(e, state, 100);
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fmpz_randtest(f, state, 100);
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arf_frexp(y, e, x);
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arf_mul_2exp_fmpz(z, y, e);
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ok = 1;
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if (!arf_equal(z, x)) ok = 0;
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if (arf_is_special(x) && !fmpz_is_zero(e)) ok = 0;
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if (!arf_is_special(x) && !(arf_cmpabs_2exp_si(y, 0) < 0
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&& arf_cmpabs_2exp_si(y, -1) >= 0)) ok = 0;
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if (!ok)
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{
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printf("FAIL\n");
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printf("x = "); arf_print(x); printf("\n\n");
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printf("y = "); arf_print(y); printf("\n\n");
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printf("z = "); arf_print(z); printf("\n\n");
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printf("e = "); fmpz_print(e); printf("\n\n");
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printf("f = "); fmpz_print(f); printf("\n\n");
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abort();
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}
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arf_frexp(x, f, x);
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if (!arf_equal(x, y) || !fmpz_equal(e, f))
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{
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printf("FAIL (aliasing)\n");
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printf("x = "); arf_print(x); printf("\n\n");
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printf("y = "); arf_print(y); printf("\n\n");
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printf("z = "); arf_print(z); printf("\n\n");
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printf("e = "); fmpz_print(e); printf("\n\n");
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printf("f = "); fmpz_print(f); printf("\n\n");
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abort();
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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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fmpz_clear(e);
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fmpz_clear(f);
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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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