141 lines
4.3 KiB
C
141 lines
4.3 KiB
C
/*=============================================================================
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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, 2012 Sebastian Pancratz
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******************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include "long_extras.h"
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#include "ulong_extras.h"
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#include "padic_poly.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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padic_ctx_t ctx;
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fmpz_t p;
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slong N;
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FLINT_TEST_INIT(state);
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flint_printf("compose_pow... ");
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fflush(stdout);
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/* Aliasing */
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for (i = 0; i < 1000; i++)
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{
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padic_poly_t a, b, c;
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slong k;
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fmpz_init_set_ui(p, n_randtest_prime(state, 0));
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N = n_randint(state, PADIC_TEST_PREC_MAX - PADIC_TEST_PREC_MIN)
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+ PADIC_TEST_PREC_MIN;
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padic_ctx_init(ctx, p, FLINT_MAX(0, N-10), FLINT_MAX(0, N+10), PADIC_SERIES);
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padic_poly_init2(a, 0, N);
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padic_poly_init2(b, 0, N);
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padic_poly_init2(c, 0, N);
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padic_poly_randtest(a, state, n_randint(state, 100), ctx);
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padic_poly_set(b, a, ctx);
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k = n_randint(state, 20) + 1;
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padic_poly_compose_pow(c, b, k, ctx);
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padic_poly_compose_pow(b, b, k, ctx);
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result = (padic_poly_equal(b, c) && padic_poly_is_reduced(b, ctx));
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if (!result)
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{
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flint_printf("FAIL (aliasing):\n");
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padic_poly_print(a, ctx), flint_printf("\n\n");
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padic_poly_print(b, ctx), flint_printf("\n\n");
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padic_poly_print(c, ctx), flint_printf("\n\n");
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abort();
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}
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padic_poly_clear(a);
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padic_poly_clear(b);
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padic_poly_clear(c);
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padic_ctx_clear(ctx);
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fmpz_clear(p);
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}
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/* Compare with usual composition */
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for (i = 0; i < 1000; i++)
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{
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padic_poly_t f, g, h1, h2;
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slong k;
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padic_t one;
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fmpz_init_set_ui(p, n_randtest_prime(state, 0));
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N = n_randint(state, PADIC_TEST_PREC_MAX - PADIC_TEST_PREC_MIN)
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+ PADIC_TEST_PREC_MIN;
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padic_ctx_init(ctx, p, FLINT_MAX(0, N-10), FLINT_MAX(0, N+10), PADIC_SERIES);
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padic_poly_init2(f, 0, N);
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padic_poly_init2(g, 0, WORD_MAX); /* TODO: Check this is OK */
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padic_poly_init2(h1, 0, N);
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padic_poly_init2(h2, 0, N);
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padic_poly_randtest(f, state, n_randint(state, 40), ctx);
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k = n_randint(state, 20) + 1;
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padic_poly_compose_pow(h1, f, k, ctx);
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padic_init(one);
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padic_one(one);
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padic_poly_set_coeff_padic(g, k, one, ctx);
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padic_clear(one);
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padic_poly_compose(h2, f, g, ctx);
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result = (padic_poly_equal(h1, h2) && padic_poly_is_reduced(h1, ctx));
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if (!result)
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{
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flint_printf("FAIL (cmp with composition):\n");
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flint_printf("f = "), padic_poly_print(f, ctx), flint_printf("\n\n");
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flint_printf("g = "), padic_poly_print(g, ctx), flint_printf("\n\n");
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flint_printf("h1 = "), padic_poly_print(h1, ctx), flint_printf("\n\n");
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flint_printf("h2 = "), padic_poly_print(h2, ctx), flint_printf("\n\n");
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flint_printf("p = "), fmpz_print(p), flint_printf("\n\n");
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flint_printf("N = %wd\n\n", N);
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abort();
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}
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padic_poly_clear(f);
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padic_poly_clear(g);
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padic_poly_clear(h1);
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padic_poly_clear(h2);
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padic_ctx_clear(ctx);
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fmpz_clear(p);
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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 EXIT_SUCCESS;
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}
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