pqc/external/flint-2.4.3/fq_mat_templates/mul_classical.c
2014-05-24 23:16:06 +02:00

89 lines
2.6 KiB
C

/*=============================================================================
This file is part of FLINT.
FLINT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FLINT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2011 Fredrik Johansson
Copyright (C) 2013 Mike Hansen
******************************************************************************/
#ifdef T
#include "templates.h"
void
TEMPLATE(T, mat_mul_classical) (TEMPLATE(T, mat_t) C,
const TEMPLATE(T, mat_t) A,
const TEMPLATE(T, mat_t) B,
const TEMPLATE(T, ctx_t) ctx)
{
slong ar, bc, br;
slong i, j, k;
TEMPLATE(T, t) t;
ar = A->r;
br = B->r;
bc = B->c;
if (br == 0)
{
TEMPLATE(T, mat_zero) (C, ctx);
return;
}
if (C == A || C == B)
{
TEMPLATE(T, mat_t) T;
TEMPLATE(T, mat_init) (T, ar, bc, ctx);
TEMPLATE(T, mat_mul_classical) (T, A, B, ctx);
TEMPLATE(T, mat_swap) (C, T, ctx);
TEMPLATE(T, mat_clear) (T, ctx);
return;
}
TEMPLATE(T, init) (t, ctx);
for (i = 0; i < ar; i++)
{
for (j = 0; j < bc; j++)
{
TEMPLATE(T, mul) (TEMPLATE(T, mat_entry) (C, i, j),
TEMPLATE(T, mat_entry) (A, i, 0),
TEMPLATE(T, mat_entry) (B, 0, j), ctx);
for (k = 1; k < br; k++)
{
TEMPLATE(T, mul) (t,
TEMPLATE(T, mat_entry) (A, i, k),
TEMPLATE(T, mat_entry) (B, k, j), ctx);
TEMPLATE(T, add) (TEMPLATE(T, mat_entry) (C, i, j),
TEMPLATE(T, mat_entry) (C, i, j), t, ctx);
}
}
}
TEMPLATE(T, clear) (t, ctx);
}
#endif