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/*
Copyright (C) 2010 Fredrik Johansson
Copyright (C) 2013 Mike Hansen
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_randrank) (TEMPLATE(T, mat_t) mat, flint_rand_t state,
slong rank, const TEMPLATE(T, ctx_t) ctx)
{
slong i;
TEMPLATE(T, struct) * diag;
if (rank < 0 || rank > mat->r || rank > mat->c)
{
flint_throw(FLINT_ERROR, "(%s): Impossible rank.\n", __func__);
}
diag = _TEMPLATE(T, vec_init) (rank, ctx);
for (i = 0; i < rank; i++)
TEMPLATE(T, randtest_not_zero) (diag + i, state, ctx);
TEMPLATE(T, mat_randpermdiag) (mat, state, diag, rank, ctx);
_TEMPLATE(T, vec_clear) (diag, rank, ctx);
}
#endif