101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/*=============================================================================
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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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Copyright (C) 2013 Mike Hansen
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******************************************************************************/
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#ifdef T
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#include "templates.h"
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#include "fmpz_mat.h"
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void
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TEMPLATE(T, mat_mul_KS) (TEMPLATE(T, mat_t) C,
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const TEMPLATE(T, mat_t) A,
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const TEMPLATE(T, mat_t) B,
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const TEMPLATE(T, ctx_t) ctx)
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{
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slong bits;
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slong ar, bc, br;
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slong i, j;
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fmpz_mat_t fa, fb, fc;
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fmpz_t beta;
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ar = A->r;
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br = B->r;
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bc = B->c;
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if (br == 0)
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{
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TEMPLATE(T, mat_zero) (C, ctx);
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return;
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}
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/* Compute the number of bits needed */
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/* TODO: Make this generic based on say an TEMPLATE(T,
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* bits_needed) and TEMPLATE(T, bit_pack) */
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fmpz_init(beta);
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fmpz_set(beta, TEMPLATE(T, ctx_prime) (ctx));
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fmpz_sub_ui(beta, beta, 1);
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fmpz_mul(beta, beta, beta);
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fmpz_mul_si(beta, beta, A->r);
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fmpz_mul_si(beta, beta, TEMPLATE(T, ctx_degree) (ctx));
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bits = fmpz_bits(beta) + 1;
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fmpz_mat_init(fa, A->r, A->c);
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fmpz_mat_init(fb, B->r, B->c);
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fmpz_mat_init(fc, A->r, B->c);
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for (i = 0; i < A->r; i++)
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for (j = 0; j < A->c; j++)
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TEMPLATE(T, bit_pack) (fmpz_mat_entry(fa, i, j),
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TEMPLATE(T, mat_entry) (A, i, j), bits,
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ctx);
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for (i = 0; i < B->r; i++)
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for (j = 0; j < B->c; j++)
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TEMPLATE(T, bit_pack) (fmpz_mat_entry(fb, i, j),
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TEMPLATE(T, mat_entry) (B, i, j), bits,
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ctx);
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fmpz_mat_mul(fc, fa, fb);
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for (i = 0; i < ar; i++)
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{
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for (j = 0; j < bc; j++)
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{
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TEMPLATE(T, bit_unpack) (TEMPLATE(T, mat_entry) (C, i, j),
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fmpz_mat_entry(fc, i, j), bits, ctx);
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}
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}
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fmpz_mat_clear(fa);
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fmpz_mat_clear(fb);
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fmpz_mat_clear(fc);
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}
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#endif
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