ALL: Add flint

external/flint-2.4.3/fmpz_poly_mat/test/t-pow_trunc.c

@@ -0,0 +1,126 @@
+/*=============================================================================
+
+    This file is part of FLINT.
+
+    FLINT is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    FLINT is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with FLINT; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+=============================================================================*/
+/******************************************************************************
+
+    Copyright (C) 2011 Fredrik Johansson
+
+******************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "flint.h"
+#include "fmpz.h"
+#include "fmpz_mat.h"
+#include "fmpz_poly.h"
+#include "fmpz_poly_mat.h"
+
+int
+main(void)
+{
+    slong i;
+
+    FLINT_TEST_INIT(state);
+
+    flint_printf("pow_trunc....");
+    fflush(stdout);    
+
+    /* Compare with pow */
+    for (i = 0; i < 100 * flint_test_multiplier(); i++)
+    {
+        fmpz_poly_mat_t A, B, C;
+        slong n, exp, bits, deg, len;
+
+        n = n_randint(state, 10);
+        exp = n_randint(state, 15);
+        deg = 1 + n_randint(state, 10);
+        bits = 1 + n_randint(state, 100);
+        len = n_randint(state, 10);
+
+        fmpz_poly_mat_init(A, n, n);
+        fmpz_poly_mat_init(B, n, n);
+        fmpz_poly_mat_init(C, n, n);
+
+        fmpz_poly_mat_randtest(A, state, deg, bits);
+        fmpz_poly_mat_randtest(B, state, deg, bits);  /* noise in output */
+        fmpz_poly_mat_randtest(C, state, deg, bits);  /* noise in output */
+
+        fmpz_poly_mat_pow_trunc(B, A, exp, len);
+        fmpz_poly_mat_pow(C, A, exp);
+        fmpz_poly_mat_truncate(C, len);
+
+        if (!fmpz_poly_mat_equal(B, C))
+        {
+            flint_printf("FAIL:\n");
+            flint_printf("A:\n");
+            fmpz_poly_mat_print(A, "x");
+            flint_printf("B:\n");
+            fmpz_poly_mat_print(B, "x");
+            flint_printf("C:\n");
+            fmpz_poly_mat_print(C, "x");
+            flint_printf("\n");
+            abort();
+        }
+
+        fmpz_poly_mat_clear(A);
+        fmpz_poly_mat_clear(B);
+        fmpz_poly_mat_clear(C);
+    }
+
+    /* Check aliasing */
+    for (i = 0; i < 10 * flint_test_multiplier(); i++)
+    {
+        fmpz_poly_mat_t A, B;
+        slong n, exp, bits, deg, len;
+
+        n = n_randint(state, 10);
+        exp = n_randint(state, 15);
+        deg = 1 + n_randint(state, 10);
+        bits = 1 + n_randint(state, 100);
+        len = n_randint(state, 10);
+
+        fmpz_poly_mat_init(A, n, n);
+        fmpz_poly_mat_init(B, n, n);
+
+        fmpz_poly_mat_randtest(A, state, deg, bits);
+        fmpz_poly_mat_randtest(B, state, deg, bits);
+
+        fmpz_poly_mat_pow_trunc(B, A, exp, len);
+        fmpz_poly_mat_pow_trunc(A, A, exp, len);
+
+        if (!fmpz_poly_mat_equal(B, A))
+        {
+            flint_printf("FAIL:\n");
+            flint_printf("A:\n");
+            fmpz_poly_mat_print(A, "x");
+            flint_printf("B:\n");
+            fmpz_poly_mat_print(B, "x");
+            flint_printf("\n");
+            abort();
+        }
+
+        fmpz_poly_mat_clear(A);
+        fmpz_poly_mat_clear(B);
+    }
+
+    FLINT_TEST_CLEANUP(state);
+    
+    flint_printf("PASS\n");
+    return 0;
+}