/*
Copyright (C) 2013 Mike Hansen
Copyright (C) 2018 Tommy Hofmann
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/>.
*/
#ifdef T
#include "templates.h"
void
TEMPLATE(T, mat_swap_cols)(TEMPLATE(T, mat_t) mat, slong * perm, slong r, slong s, const TEMPLATE(T, ctx_t) ctx)
{
if (r != s && !TEMPLATE(T, mat_is_empty)(mat, ctx))
{
slong t;
if (perm != NULL)
FLINT_SWAP(slong, perm[r], perm[s]);
for (t = 0; t < mat->r; t++)
TEMPLATE(T, swap)(TEMPLATE(T, mat_entry)(mat, t, r), TEMPLATE(T, mat_entry)(mat, t, s), ctx);
}
}
#endif