mirror of
https://github.com/vale981/arb
synced 2025-03-06 09:51:39 -05:00
120 lines
3.7 KiB
C
120 lines
3.7 KiB
C
/*=============================================================================
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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
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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ARB is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with ARB; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2012, 2014 Fredrik Johansson
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******************************************************************************/
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#include "fmpr.h"
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#include "ulong_extras.h"
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static long
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fmpr_mul_ui_naive(fmpr_t z, const fmpr_t x, ulong y, long prec, fmpr_rnd_t rnd)
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{
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fmpr_t t; long r;
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fmpr_init(t);
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fmpr_set_ui(t, y);
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r = fmpr_mul(z, x, t, prec, rnd);
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fmpr_clear(t);
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return r;
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}
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int main()
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{
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long iter, iter2;
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flint_rand_t state;
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printf("mul_ui....");
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fflush(stdout);
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flint_randinit(state);
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for (iter = 0; iter < 3000; iter++)
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{
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fmpr_t x, z, v;
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ulong y;
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long prec, r1, r2;
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fmpr_rnd_t rnd;
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fmpr_init(x);
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fmpr_init(z);
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fmpr_init(v);
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for (iter2 = 0; iter2 < 30; iter2++)
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{
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fmpr_randtest_special(x, state, 2000, 200);
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y = n_randtest(state);
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prec = 2 + n_randint(state, 2000);
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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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switch (n_randint(state, 2))
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{
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case 0:
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r1 = fmpr_mul_ui(z, x, y, prec, rnd);
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r2 = fmpr_mul_ui_naive(v, x, y, prec, rnd);
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if (!fmpr_equal(z, v) || r1 != r2)
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{
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printf("FAIL!\n");
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printf("x = "); fmpr_print(x); printf("\n\n");
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printf("y = %lu\n\n", y);
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printf("z = "); fmpr_print(z); printf("\n\n");
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printf("v = "); fmpr_print(v); printf("\n\n");
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printf("r1 = %ld, r2 = %ld\n", r1, r2);
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abort();
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}
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break;
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default:
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fmpr_set(v, x);
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fmpr_set(z, x);
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r1 = fmpr_mul_ui(z, z, y, prec, rnd);
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r2 = fmpr_mul_ui_naive(v, v, y, prec, rnd);
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if (!fmpr_equal(z, v) || r1 != r2)
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{
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printf("FAIL (aliasing 1)!\n");
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printf("x = "); fmpr_print(x); printf("\n\n");
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printf("y = %lu\n\n", y);
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printf("z = "); fmpr_print(z); printf("\n\n");
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printf("v = "); fmpr_print(v); printf("\n\n");
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printf("r1 = %ld, r2 = %ld\n", r1, r2);
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abort();
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}
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break;
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}
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}
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fmpr_clear(x);
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fmpr_clear(z);
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fmpr_clear(v);
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}
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flint_randclear(state);
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flint_cleanup();
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printf("PASS\n");
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return EXIT_SUCCESS;
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}
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