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/*
Copyright (C) 2012 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 "arb_mat.h"
void
arb_mat_mul(arb_mat_t C, const arb_mat_t A, const arb_mat_t B, slong prec)
{
slong cutoff;
/* todo: detect small-integer matrices */
if (prec <= 2 * FLINT_BITS)
cutoff = 60;
else if (prec <= 8 * FLINT_BITS)
cutoff = 50;
else
cutoff = 40;
if (arb_mat_nrows(A) <= cutoff || arb_mat_ncols(A) <= cutoff ||
arb_mat_ncols(B) <= cutoff)
{
if (flint_get_num_threads() > 1 &&
((double) arb_mat_nrows(A) *
(double) arb_mat_nrows(B) *
(double) arb_mat_ncols(B) *
(double) prec > 100000))
{
arb_mat_mul_threaded(C, A, B, prec);
}
else
{
arb_mat_mul_classical(C, A, B, prec);
}
}
else
{
arb_mat_mul_block(C, A, B, prec);
}
}