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//=====================================================
// File : smooth.cxx
// Author : L. Plagne <laurent.plagne@edf.fr)>
// Copyright (C) EDF R&D, lun sep 30 14:23:15 CEST 2002
//=====================================================
//
// This program 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.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#include "utilities.h"
#include <vector>
#include <deque>
#include <string>
#include <iostream>
#include <fstream>
#include "bench_parameter.hh"
#include <set>
using namespace std;
void read_xy_file(const string & filename, vector<int> & tab_sizes, vector<double> & tab_mflops);
void write_xy_file(const string & filename, vector<int> & tab_sizes, vector<double> & tab_mflops);
void smooth_curve(const vector<double> & tab_mflops, vector<double> & smooth_tab_mflops,int window_half_width);
void centered_smooth_curve(const vector<double> & tab_mflops, vector<double> & smooth_tab_mflops,int window_half_width);
/////////////////////////////////////////////////////////////////////////////////////////////////
int main( int argc , char *argv[] )
{
// input data
if (argc<3){
INFOS("!!! Error ... usage : main filename window_half_width smooth_filename");
exit(0);
}
INFOS(argc);
int window_half_width=atoi(argv[2]);
string filename=argv[1];
string smooth_filename=argv[3];
INFOS(filename);
INFOS("window_half_width="<<window_half_width);
vector<int> tab_sizes;
vector<double> tab_mflops;
read_xy_file(filename,tab_sizes,tab_mflops);
// smoothing
vector<double> smooth_tab_mflops;
//smooth_curve(tab_mflops,smooth_tab_mflops,window_half_width);
centered_smooth_curve(tab_mflops,smooth_tab_mflops,window_half_width);
// output result
write_xy_file(smooth_filename,tab_sizes,smooth_tab_mflops);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
template<class VECTOR>
double weighted_mean(const VECTOR & data)
{
double mean=0.0;
for (int i=0 ; i<data.size() ; i++){
mean+=data[i];
}
return mean/double(data.size()) ;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void smooth_curve(const vector<double> & tab_mflops, vector<double> & smooth_tab_mflops,int window_half_width){
int window_width=2*window_half_width+1;
int size=tab_mflops.size();
vector<double> sample(window_width);
for (int i=0 ; i < size ; i++){
for ( int j=0 ; j < window_width ; j++ ){
int shifted_index=i+j-window_half_width;
if (shifted_index<0) shifted_index=0;
if (shifted_index>size-1) shifted_index=size-1;
sample[j]=tab_mflops[shifted_index];
}
smooth_tab_mflops.push_back(weighted_mean(sample));
}
}
void centered_smooth_curve(const vector<double> & tab_mflops, vector<double> & smooth_tab_mflops,int window_half_width){
int max_window_width=2*window_half_width+1;
int size=tab_mflops.size();
for (int i=0 ; i < size ; i++){
deque<double> sample;
sample.push_back(tab_mflops[i]);
for ( int j=1 ; j <= window_half_width ; j++ ){
int before=i-j;
int after=i+j;
if ((before>=0)&&(after<size)) // inside of the vector
{
sample.push_front(tab_mflops[before]);
sample.push_back(tab_mflops[after]);
}
}
smooth_tab_mflops.push_back(weighted_mean(sample));
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void write_xy_file(const string & filename, vector<int> & tab_sizes, vector<double> & tab_mflops){
ofstream output_file (filename.c_str(),ios::out) ;
for (int i=0 ; i < tab_sizes.size() ; i++)
{
output_file << tab_sizes[i] << " " << tab_mflops[i] << endl ;
}
output_file.close();
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void read_xy_file(const string & filename, vector<int> & tab_sizes, vector<double> & tab_mflops){
ifstream input_file (filename.c_str(),ios::in) ;
if (!input_file){
INFOS("!!! Error opening "<<filename);
exit(0);
}
int nb_point=0;
int size=0;
double mflops=0;
while (input_file >> size >> mflops ){
nb_point++;
tab_sizes.push_back(size);
tab_mflops.push_back(mflops);
}
SCRUTE(nb_point);
input_file.close();
}
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