/* Copyright (c) FFLAS-FFPACK
 * Written by Philippe LEDENT <philippe.ledent@etu.univ-grenoble-alpes.fr>
 * ========LICENCE========
 * This file is part of the library FFLAS-FFPACK.
 *
 * FFLAS-FFPACK is free software: you can redistribute it and/or modify
 * it under the terms of the  GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * ========LICENCE========
 */

// declare that the call to openblas_set_numthread will be made here, hence don't do it
// everywhere in the call stack
#define __FFLASFFPACK_OPENBLAS_NT_ALREADY_SET 1

#include "fflas-ffpack/fflas-ffpack-config.h"
#include <iostream>
#include <givaro/modular.h>

#include "fflas-ffpack/fflas-ffpack.h"
#include "fflas-ffpack/utils/timer.h"
#include "fflas-ffpack/utils/fflas_io.h"
#include "fflas-ffpack/utils/args-parser.h"


using namespace std;
using namespace FFLAS;
using namespace FFPACK;
int main(int argc, char** argv) {

#ifdef __FFLASFFPACK_OPENBLAS_NUM_THREADS
    openblas_set_num_threads(__FFLASFFPACK_OPENBLAS_NUM_THREADS);
#endif

    size_t iter      = 3;
    int    q         = 131071;
    size_t rows      = 5000;
    size_t cols      = 5000;
    double a         = 1.0;
    // size_t threshold = 64;
    std::string file = "";

    Argument as[] = {
        { 'q', "-q Q", "Set the field characteristic (-1 for random).",         TYPE_INT , &q },
        { 'm', "-m M", "Set the row dimension of the matrix C.",                TYPE_INT , &rows },
        { 'n', "-n N", "Set the column dimension of the matrix C.",             TYPE_INT , &cols },
        { 'a', "-a A", "Set the value of the coefficient alpha for alpha * B.", TYPE_DOUBLE , &a},
        { 'i', "-i R", "Set number of repetitions.",                            TYPE_INT , &iter },
        END_OF_ARGUMENTS
    };

    FFLAS::parseArguments(argc,argv,as);

    //	typedef Givaro::Modular<double> Field;
    //	typedef Givaro::Modular<float> Field;
    //	typedef Givaro::ZRing<int64_t> Field;
    //	typedef Givaro::ZRing<float> Field;
    //		typedef Givaro::ZRing<double> Field;
    typedef Givaro::Modular<int64_t> Field;

    typedef Field::Element Element;

    Field F(q);
    Field::Element_ptr A, B;
    Field::Element_ptr C;
    Element alpha;
    F.init(alpha, a);


    FFLAS::Timer chrono;
    double *time=new double[iter];

    A = fflas_new(F, rows, cols);
    size_t lda = cols;
    B = fflas_new(F, rows, cols);
    size_t ldb = cols;
    C = fflas_new(F, rows, cols);
    size_t ldc = cols;
    Field::RandIter G(F);
    RandomMatrix (F, rows, cols, A, lda, G);
    RandomMatrix (F, rows, cols, B, ldb, G);

    for (size_t i=0;i<=iter;++i){
        chrono.clear();
        if (i) chrono.start();
        fadd(F, rows, cols, A, lda, alpha, B, ldb, C, ldc);
        if (i) {chrono.stop(); time[i-1] = chrono.usertime();}
    }
    FFLAS::fflas_delete(A);
    FFLAS::fflas_delete(B);
    FFLAS::fflas_delete(C);
    std::sort(time, time+iter);
    double mediantime = time[iter/2];
    delete[] time;

    // -----------
    // Standard output for benchmark - Alexis Breust 2014/11/14
    std::cout << "Time: " << mediantime
    << " Gfops: " << ((double(rows)/1000)*(double(cols)/1000))/(1000*mediantime); //(n^2/1000^3)/time * iter
    FFLAS::writeCommandString(std::cout, as) << std::endl;
    return 0;
}
/* -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
// vim:sts=4:sw=4:ts=4:et:sr:cino=>s,f0,{0,g0,(0,\:0,t0,+0,=s