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https://github.com/vale981/arb
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47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/*
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Copyright (C) 2012 Fredrik Johansson
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This file is part of Arb.
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Arb is free software: you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version. See <http://www.gnu.org/licenses/>.
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*/
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#include "arb_mat.h"
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void
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arb_mat_mul(arb_mat_t C, const arb_mat_t A, const arb_mat_t B, slong prec)
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{
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slong cutoff;
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/* todo: detect small-integer matrices */
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if (prec <= 2 * FLINT_BITS)
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cutoff = 60;
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else if (prec <= 8 * FLINT_BITS)
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cutoff = 50;
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else
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cutoff = 40;
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if (arb_mat_nrows(A) <= cutoff || arb_mat_ncols(A) <= cutoff ||
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arb_mat_ncols(B) <= cutoff)
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{
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if (flint_get_num_threads() > 1 &&
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((double) arb_mat_nrows(A) *
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(double) arb_mat_nrows(B) *
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(double) arb_mat_ncols(B) *
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(double) prec > 100000))
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{
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arb_mat_mul_threaded(C, A, B, prec);
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}
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else
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{
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arb_mat_mul_classical(C, A, B, prec);
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}
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}
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else
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{
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arb_mat_mul_block(C, A, B, prec);
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}
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}
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