61 lines
1.8 KiB
C
61 lines
1.8 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
|
|
|
|
******************************************************************************/
|
|
|
|
#include "fmpq_mat.h"
|
|
|
|
void
|
|
fmpq_mat_mul_r_fmpz_mat(fmpq_mat_t C, const fmpz_mat_t A, const fmpq_mat_t B)
|
|
{
|
|
slong i, j;
|
|
|
|
fmpz_mat_t Bclear;
|
|
fmpz_mat_t Cclear;
|
|
|
|
fmpz * Bden;
|
|
|
|
fmpz_mat_init(Bclear, B->r, B->c);
|
|
fmpz_mat_init(Cclear, A->r, B->c);
|
|
|
|
Bden = _fmpz_vec_init(B->c);
|
|
|
|
fmpq_mat_get_fmpz_mat_colwise(Bclear, Bden, B);
|
|
fmpz_mat_mul(Cclear, A, Bclear);
|
|
|
|
for (i = 0; i < C->r; i++)
|
|
{
|
|
for (j = 0; j < C->c; j++)
|
|
{
|
|
fmpz_set(fmpq_mat_entry_num(C, i, j), fmpz_mat_entry(Cclear, i, j));
|
|
fmpz_set(fmpq_mat_entry_den(C, i, j), Bden + j);
|
|
fmpq_canonicalise(fmpq_mat_entry(C, i, j));
|
|
}
|
|
}
|
|
|
|
fmpz_mat_clear(Bclear);
|
|
fmpz_mat_clear(Cclear);
|
|
|
|
_fmpz_vec_clear(Bden, B->c);
|
|
}
|