62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
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/*=============================================================================
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This file is part of FLINT.
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FLINT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FLINT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2011 Fredrik Johansson
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******************************************************************************/
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#include <stdlib.h>
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#include "flint.h"
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#include "nmod_poly.h"
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#include "nmod_poly_mat.h"
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#define KS_MIN_DIM 10
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#define INTERPOLATE_MIN_DIM 80
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#define KS_MAX_LENGTH 128
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void
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nmod_poly_mat_sqr(nmod_poly_mat_t C, const nmod_poly_mat_t A)
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{
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slong dim = A->r;
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if (dim < KS_MIN_DIM)
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{
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nmod_poly_mat_sqr_classical(C, A);
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}
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else
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{
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slong Alen;
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mp_limb_t mod = nmod_poly_mat_modulus(A);
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Alen = nmod_poly_mat_max_length(A);
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if ((FLINT_BIT_COUNT(mod) > FLINT_BITS / 4)
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&& (dim > INTERPOLATE_MIN_DIM + n_sqrt(Alen))
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&& (mod >= 2 * Alen - 1) && n_is_prime(mod))
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nmod_poly_mat_sqr_interpolate(C, A);
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if (Alen > KS_MAX_LENGTH)
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nmod_poly_mat_sqr_classical(C, A);
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else
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nmod_poly_mat_sqr_KS(C, A);
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}
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}
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