1 files changed, 198 insertions, 0 deletions
diff --git a/btl/data/smooth.cxx b/btl/data/smooth.cxx
new file mode 100644
index 0000000..e5270cc
--- /dev/null
+++ b/btl/data/smooth.cxx
@@ -0,0 +1,198 @@
+//=====================================================
+// 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();
+}
+