mirror of
https://github.com/vale981/arb
synced 2025-03-05 17:31:38 -05:00
6bf072eb59
This will allow us to not loose the julia session on error. See also https://github.com/wbhart/flint2/pull/243
106 lines
2.5 KiB
C
106 lines
2.5 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 "mag.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("sub....");
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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, y, z, z2, w;
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mag_t xb, yb, zb;
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fmpr_init(x);
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fmpr_init(y);
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fmpr_init(z);
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fmpr_init(z2);
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fmpr_init(w);
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mag_init(xb);
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mag_init(yb);
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mag_init(zb);
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mag_randtest_special(xb, state, 100);
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mag_randtest_special(yb, state, 100);
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mag_get_fmpr(x, xb);
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mag_get_fmpr(y, yb);
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fmpr_sub(z, x, y, 100, FMPR_RND_UP);
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if (fmpr_sgn(z) < 0)
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fmpr_zero(z);
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fmpr_mul_ui(z2, z, 1025, MAG_BITS, FMPR_RND_UP);
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fmpr_mul_2exp_si(z2, z2, -10);
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mag_sub(zb, xb, yb);
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mag_get_fmpr(w, zb);
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MAG_CHECK_BITS(xb)
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MAG_CHECK_BITS(yb)
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MAG_CHECK_BITS(zb)
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if (!(fmpr_cmpabs(z, w) <= 0 && fmpr_cmpabs(w, z2) <= 0))
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{
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flint_printf("FAIL\n\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("z = "); fmpr_print(z); flint_printf("\n\n");
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flint_printf("w = "); fmpr_print(w); flint_printf("\n\n");
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flint_abort();
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}
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if (n_randint(state, 2))
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{
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mag_sub(xb, xb, yb);
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if (!mag_equal(xb, zb))
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{
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flint_printf("FAIL (aliasing 1)\n\n");
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flint_abort();
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}
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}
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else
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{
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mag_sub(yb, xb, yb);
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if (!mag_equal(yb, zb))
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{
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flint_printf("FAIL (aliasing 2)\n\n");
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flint_abort();
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}
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}
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fmpr_clear(x);
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fmpr_clear(y);
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fmpr_clear(z);
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fmpr_clear(z2);
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fmpr_clear(w);
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mag_clear(xb);
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mag_clear(yb);
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mag_clear(zb);
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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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