255 lines
7.7 KiB
C
255 lines
7.7 KiB
C
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/*=============================================================================
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This file is part of FLINT.
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FLINT 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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FLINT 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 FLINT; 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) 2011 William Hart
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Copyright (C) 2012 Andres Goens
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Copyright (C) 2013 Mike Hansen
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******************************************************************************/
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#ifdef T
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#include "templates.h"
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#include <stdio.h>
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#include <stdlib.h>
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int
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main(void)
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{
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int i, result;
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FLINT_TEST_INIT(state);
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flint_printf("gcd_euclidean....");
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fflush(stdout);
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/* Check that gcd(a,a) = a (made monic) */
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for (i = 0; i < 100 * flint_test_multiplier(); i++)
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{
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slong len;
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TEMPLATE(T, ctx_t) ctx;
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TEMPLATE(T, poly_t) a, b, g;
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len = n_randint(state, 15) + 1;
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TEMPLATE(T, ctx_randtest) (ctx, state);
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TEMPLATE(T, poly_init) (a, ctx);
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TEMPLATE(T, poly_init) (b, ctx);
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TEMPLATE(T, poly_init) (g, ctx);
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TEMPLATE(T, poly_randtest_not_zero) (a, state, len, ctx);
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TEMPLATE(T, poly_make_monic) (b, a, ctx);
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TEMPLATE(T, poly_gcd_euclidean) (g, a, a, ctx);
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result = (TEMPLATE(T, poly_equal) (g, b, ctx));
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if (!result)
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{
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flint_printf("FAIL:\n");
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flint_printf("a = "), TEMPLATE(T, poly_print_pretty) (a, "X", ctx),
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flint_printf("\n");
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flint_printf("b = "), TEMPLATE(T, poly_print_pretty) (b, "X", ctx),
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flint_printf("\n");
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flint_printf("g = "), TEMPLATE(T, poly_print_pretty) (g, "X", ctx),
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flint_printf("\n");
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abort();
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}
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TEMPLATE(T, poly_clear) (a, ctx);
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TEMPLATE(T, poly_clear) (b, ctx);
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TEMPLATE(T, poly_clear) (g, ctx);
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}
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/*
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Find coprime polys, multiply by another poly
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and check the GCD is that poly
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*/
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for (i = 0; i < 10 * flint_test_multiplier(); i++)
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{
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slong len, j;
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TEMPLATE(T, ctx_t) ctx;
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TEMPLATE(T, poly_t) a, b, c, g;
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len = n_randint(state, 15) + 1;
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TEMPLATE(T, ctx_randtest) (ctx, state);
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TEMPLATE(T, poly_init) (a, ctx);
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TEMPLATE(T, poly_init) (b, ctx);
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TEMPLATE(T, poly_init) (c, ctx);
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TEMPLATE(T, poly_init) (g, ctx);
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TEMPLATE(T, poly_randtest_not_zero) (a, state, len, ctx);
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for (j = 0;
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(j < 100 * flint_test_multiplier())
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&& !TEMPLATE(T, poly_is_one) (g, ctx); j++)
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{
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TEMPLATE(T, poly_randtest_not_zero) (b, state, len, ctx);
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TEMPLATE(T, poly_gcd_euclidean) (g, a, b, ctx);
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}
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if (!TEMPLATE(T, poly_is_one) (g, ctx))
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{
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flint_printf("FAIL:\n");
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flint_printf
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("could not find coprime polynomials after %wd tries\n",
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j + 1);
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abort();
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}
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for (j = 0; (j < 100 * flint_test_multiplier()) && (c->length < 2);
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j++)
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TEMPLATE(T, poly_randtest_not_zero) (c, state, len + 2, ctx);
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if (c->length < 2)
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{
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flint_printf("FAIL:\n");
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flint_printf
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("could not find non-unit polynomial after %wd tries\n",
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j + 1);
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abort();
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}
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TEMPLATE(T, poly_make_monic) (c, c, ctx);
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TEMPLATE(T, poly_mul) (a, a, c, ctx);
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TEMPLATE(T, poly_mul) (b, b, c, ctx);
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TEMPLATE(T, poly_gcd_euclidean) (g, a, b, ctx);
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result = (TEMPLATE(T, poly_equal) (g, c, ctx));
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if (!result)
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{
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flint_printf("FAIL:\n");
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flint_printf("a = "), TEMPLATE(T, poly_print_pretty) (a, "X", ctx),
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flint_printf("\n");
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flint_printf("b = "), TEMPLATE(T, poly_print_pretty) (b, "X", ctx),
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flint_printf("\n");
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flint_printf("c = "), TEMPLATE(T, poly_print_pretty) (c, "X", ctx),
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flint_printf("\n");
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flint_printf("g = "), TEMPLATE(T, poly_print_pretty) (g, "X", ctx),
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flint_printf("\n");
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abort();
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}
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TEMPLATE(T, poly_clear) (a, ctx);
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TEMPLATE(T, poly_clear) (b, ctx);
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TEMPLATE(T, poly_clear) (c, ctx);
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TEMPLATE(T, poly_clear) (g, ctx);
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TEMPLATE(T, ctx_clear) (ctx);
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}
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/* Check aliasing of a and g */
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for (i = 0; i < 100 * flint_test_multiplier(); i++)
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{
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slong len;
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TEMPLATE(T, ctx_t) ctx;
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TEMPLATE(T, poly_t) a, b, g;
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len = n_randint(state, 15) + 1;
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TEMPLATE(T, ctx_randtest) (ctx, state);
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TEMPLATE(T, poly_init) (a, ctx);
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TEMPLATE(T, poly_init) (b, ctx);
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TEMPLATE(T, poly_init) (g, ctx);
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TEMPLATE(T, poly_randtest_not_zero) (a, state, len, ctx);
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TEMPLATE(T, poly_randtest_not_zero) (b, state, len, ctx);
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TEMPLATE(T, poly_gcd_euclidean) (g, a, b, ctx);
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TEMPLATE(T, poly_gcd_euclidean) (a, a, b, ctx);
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result = (TEMPLATE(T, poly_equal) (g, a, ctx));
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if (!result)
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{
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flint_printf("FAIL:\n");
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flint_printf("a = "), TEMPLATE(T, poly_print_pretty) (a, "X", ctx),
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flint_printf("\n");
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flint_printf("b = "), TEMPLATE(T, poly_print_pretty) (b, "X", ctx),
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flint_printf("\n");
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flint_printf("g = "), TEMPLATE(T, poly_print_pretty) (g, "X", ctx),
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flint_printf("\n");
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abort();
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}
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TEMPLATE(T, poly_clear) (a, ctx);
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TEMPLATE(T, poly_clear) (b, ctx);
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TEMPLATE(T, poly_clear) (g, ctx);
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TEMPLATE(T, ctx_clear) (ctx);
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}
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/* Check aliasing of b and g */
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for (i = 0; i < 100 * flint_test_multiplier(); i++)
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{
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slong len;
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TEMPLATE(T, ctx_t) ctx;
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TEMPLATE(T, poly_t) a, b, g;
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len = n_randint(state, 15) + 1;
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TEMPLATE(T, ctx_randtest) (ctx, state);
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TEMPLATE(T, poly_init) (a, ctx);
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TEMPLATE(T, poly_init) (b, ctx);
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TEMPLATE(T, poly_init) (g, ctx);
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TEMPLATE(T, poly_randtest_not_zero) (a, state, len, ctx);
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TEMPLATE(T, poly_randtest_not_zero) (b, state, len, ctx);
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TEMPLATE(T, poly_gcd_euclidean) (g, a, b, ctx);
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TEMPLATE(T, poly_gcd_euclidean) (b, a, b, ctx);
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result = (TEMPLATE(T, poly_equal) (g, b, ctx));
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if (!result)
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{
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flint_printf("FAIL:\n");
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flint_printf("a = "), TEMPLATE(T, poly_print_pretty) (a, "X", ctx),
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flint_printf("\n");
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flint_printf("b = "), TEMPLATE(T, poly_print_pretty) (b, "X", ctx),
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flint_printf("\n");
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flint_printf("g = "), TEMPLATE(T, poly_print_pretty) (g, "X", ctx),
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flint_printf("\n");
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abort();
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}
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TEMPLATE(T, poly_clear) (a, ctx);
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TEMPLATE(T, poly_clear) (b, ctx);
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TEMPLATE(T, poly_clear) (g, ctx);
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TEMPLATE(T, ctx_clear) (ctx);
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}
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FLINT_TEST_CLEANUP(state);
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flint_printf("PASS\n");
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return 0;
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}
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#endif
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