1 /*
2 Copyright (C) 2010 Fredrik Johansson
3 Copyright (C) 2012 Sebastian Pancratz
4
5 This file is part of FLINT.
6
7 FLINT is free software: you can redistribute it and/or modify it under
8 the terms of the GNU Lesser General Public License (LGPL) as published
9 by the Free Software Foundation; either version 2.1 of the License, or
10 (at your option) any later version. See <http://www.gnu.org/licenses/>.
11 */
12
13 #include <stdlib.h>
14 #include "fmpz_poly_mat.h"
15
16 void
fmpz_poly_mat_transpose(fmpz_poly_mat_t B,const fmpz_poly_mat_t A)17 fmpz_poly_mat_transpose(fmpz_poly_mat_t B, const fmpz_poly_mat_t A)
18 {
19 slong i, j;
20
21 if (B->r != A->c || B->c != A->r)
22 {
23 flint_printf("Exception (fmpz_poly_mat_transpose). Incompatible dimensions.\n");
24 flint_abort();
25 }
26
27 if (A == B) /* In-place, guaranteed to be square */
28 {
29 for (i = 0; i < A->r - 1; i++)
30 for (j = i + 1; j < A->c; j++)
31 fmpz_poly_swap(fmpz_poly_mat_entry(B, i, j),
32 fmpz_poly_mat_entry(B, j, i));
33 }
34 else /* Not aliased; general case */
35 {
36 for (i = 0; i < B->r; i++)
37 for (j = 0; j < B->c; j++)
38 fmpz_poly_set(fmpz_poly_mat_entry(B, i, j),
39 fmpz_poly_mat_entry(A, j, i));
40 }
41 }
42