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/*
Copyright (C) 2010 Fredrik Johansson
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include "fmpz.h"
#include "fmpz_mat.h"
void
fmpz_mat_transpose(fmpz_mat_t B, const fmpz_mat_t A)
{
fmpz tmp;
slong i, j;
if (B->r != A->c || B->c != A->r)
{
flint_throw(FLINT_ERROR, "Exception (fmpz_mat_transpose). Incompatible dimensions.\n");
}
if (A == B) /* In-place, guaranteed to be square */
{
for (i = 0; i < A->r - 1; i++)
for (j = i + 1; j < A->c; j++)
{
tmp = A->rows[i][j];
A->rows[i][j] = A->rows[j][i];
A->rows[j][i] = tmp;
}
}
else /* Not aliased; general case */
{
for (i = 0; i < B->r; i++)
for (j = 0; j < B->c; j++)
fmpz_set(&B->rows[i][j], &A->rows[j][i]);
}
}