/* -*- mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
// vim:sts=4:sw=4:ts=4:noet:sr:cino=>s,f0,{0,g0,(0,\:0,t0,+0,=s

/*
 * Copyright (C) 2018 FFLAS-FFPACK
 * Written by Clement Pernet <clement.pernet@univ-grenoble-alpes.fr>
 * This file is Free Software and part of FFLAS-FFPACK.
 *
 * ========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========
 *.
 */
#define ENABLE_ALL_CHECKINGS 1
#include "fflas-ffpack/utils/fflas_io.h"

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

#include <iomanip>
#include <iostream>

#include "fflas-ffpack/utils/timer.h"
#include "fflas-ffpack/ffpack/ffpack.h"
#include "fflas-ffpack/utils/args-parser.h"
#include "fflas-ffpack/utils/test-utils.h"
#include <givaro/modular.h>
#include <givaro/modular-balanced.h>

#include <random>

using namespace std;
using namespace FFLAS;
using namespace FFPACK;
using Givaro::Modular;
using Givaro::ModularBalanced;

template<typename Field, class RandIter>
bool check_ftrstr (const Field &F, size_t n, FFLAS::FFLAS_SIDE side, FFLAS::FFLAS_UPLO uplo, FFLAS::FFLAS_DIAG diagA, FFLAS::FFLAS_DIAG diagB, RandIter& Rand){

	typedef typename Field::Element Element;
	Element * A, *B, *B2, *C;
	size_t lda,ldb;
	lda=n+(rand() % 13);
	ldb=n+(rand() % 14);

	A  = FFLAS::fflas_new(F,n,lda);
	B  = FFLAS::fflas_new(F,n,ldb);
	B2 = FFLAS::fflas_new(F,n,ldb);
	C  = FFLAS::fflas_new(F,n,n);

	RandomTriangularMatrix (F, n, n, uplo, diagA, true, A, lda, Rand);
	RandomTriangularMatrix (F, n, n, uplo, diagB, true, B, ldb, Rand);
	FFLAS::fassign (F, n, n, B, ldb, B2, ldb);
	
	string ss=string((side == FFLAS::FflasLeft)?"L":"R")+string((uplo == FFLAS::FflasLower)?"Lo":"Up")+string((diagA == FFLAS::FflasUnit)?"U":"N")+string((diagB == FFLAS::FflasUnit)?"U":"N");

	cout<<std::left<<"Checking FTRSTR_";
	cout.fill('.');
	cout.width(25);
	cout<<ss;


	FFLAS::Timer t; t.clear();
	double time=0.0;
	t.clear();
	t.start();
	FFPACK::ftrstr (F, side, uplo, diagA, diagB, n, A, lda, B, ldb);
	t.stop();
	time+=t.usertime();

	FFLAS::ftrmm(F, side, uplo, FflasNoTrans, diagA, n,n,F.one, A, lda, B,ldb);
	bool ok = true;
	if (FFLAS::fequal (F, n, n, B2, ldb, B, ldb)){
		cout << "PASSED ("<<time<<")"<<endl;
	} else{
		cout << "FAILED ("<<time<<")"<<endl;
		WriteMatrix(std::cerr<<"B2 = "<<std::endl,F,n,n,B2,ldb);
		WriteMatrix(std::cerr<<"B = "<<std::endl,F,n,n,B,ldb);
		ok=false;
	}
	FFLAS::fflas_delete(A);
	FFLAS::fflas_delete(B);
	FFLAS::fflas_delete(B2);
	FFLAS::fflas_delete(C);
	return ok;
}
template <class Field>
bool run_with_field (Givaro::Integer q, size_t b,  size_t n, size_t iters, uint64_t seed){
	bool ok = true ;
	int nbit=(int)iters;

	while (ok &&  nbit){
		// choose Field
		Field* F= chooseField<Field>(q,b,seed);
		typename Field::RandIter G(*F,0,seed++);
		if (F==nullptr)
			return true;

		cout<<"Checking with ";F->write(cout)<<endl;
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasLeft,FFLAS::FflasLower,FFLAS::FflasNonUnit,FFLAS::FflasNonUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasLeft,FFLAS::FflasLower,FFLAS::FflasNonUnit,FFLAS::FflasUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasLeft,FFLAS::FflasLower,FFLAS::FflasUnit,FFLAS::FflasNonUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasLeft,FFLAS::FflasLower,FFLAS::FflasUnit,FFLAS::FflasUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasLeft,FFLAS::FflasUpper,FFLAS::FflasNonUnit,FFLAS::FflasNonUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasLeft,FFLAS::FflasUpper,FFLAS::FflasNonUnit,FFLAS::FflasUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasLeft,FFLAS::FflasUpper,FFLAS::FflasUnit,FFLAS::FflasNonUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasLeft,FFLAS::FflasUpper,FFLAS::FflasUnit,FFLAS::FflasUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasRight,FFLAS::FflasLower,FFLAS::FflasNonUnit,FFLAS::FflasNonUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasRight,FFLAS::FflasLower,FFLAS::FflasNonUnit,FFLAS::FflasUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasRight,FFLAS::FflasLower,FFLAS::FflasUnit,FFLAS::FflasNonUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasRight,FFLAS::FflasLower,FFLAS::FflasUnit,FFLAS::FflasUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasRight,FFLAS::FflasUpper,FFLAS::FflasNonUnit,FFLAS::FflasNonUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasRight,FFLAS::FflasUpper,FFLAS::FflasNonUnit,FFLAS::FflasUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasRight,FFLAS::FflasUpper,FFLAS::FflasUnit,FFLAS::FflasNonUnit,G);
		ok = ok && check_ftrstr(*F,n,FFLAS::FflasRight,FFLAS::FflasUpper,FFLAS::FflasUnit,FFLAS::FflasUnit,G);
		nbit--;
		delete F;
	}
	return ok;
}

int main(int argc, char** argv)
{
	cerr<<setprecision(10);
	Givaro::Integer q=-1;
	size_t b=0;
	size_t n=123;
	size_t iters=1;
	bool loop=false;
	uint64_t seed = getSeed();
	Argument as[] = {
		{ 'q', "-q Q", "Set the field characteristic (-1 for random).",         TYPE_INTEGER , &q },
		{ 'b', "-b B", "Set the bitsize of the field characteristic.",  TYPE_INT , &b },
		{ 'n', "-n N", "Set the column dimension of the unknown matrix.", TYPE_INT , &n },
		{ 'i', "-i R", "Set number of repetitions.",            TYPE_INT , &iters },
		{ 'l', "-loop Y/N", "run the test in an infinite loop.", TYPE_BOOL , &loop },
		{ 's', "-s seed", "Set seed for the random generator", TYPE_UINT64, &seed },
		END_OF_ARGUMENTS
        };

	FFLAS::parseArguments(argc,argv,as);
	std::cerr<<"seed = "<<seed<<std::endl;
	srand(seed);

	bool ok = true;
	do{
		ok = ok && run_with_field<Modular<double> >(q,b,n,iters,seed);
		ok = ok && run_with_field<ModularBalanced<double> >(q,b,n,iters,seed);
		ok = ok && run_with_field<Modular<float> >(q,b,n,iters,seed);
		ok = ok && run_with_field<ModularBalanced<float> >(q,b,n,iters,seed);
		ok = ok && run_with_field<Modular<int32_t> >(q,b,n,iters,seed);
		ok = ok && run_with_field<ModularBalanced<int32_t> >(q,b,n,iters,seed);
		ok = ok && run_with_field<Modular<int64_t> >(q,b,n,iters,seed);
		ok = ok && run_with_field<ModularBalanced<int64_t> >(q,b,n,iters,seed);
		ok = ok && run_with_field<Modular<Givaro::Integer> >(q,5,n/4+1,iters,seed);
		ok = ok && run_with_field<Modular<Givaro::Integer> >(q,(b?b:512),n/4+1,iters,seed);
	} while (loop && ok);

	return !ok ;
}