Adding tdd

include/finddd_descriptor.hpp

-
 #ifndef _finddd_alg_h_
 #define _finddd_alg_h_
 
@@ -18,6 +17,7 @@
 
 // util
 template <class T>
+[[deprecated]]
 inline std::string to_string (const T& t)
 {
   std::stringstream ss;
@@ -303,7 +303,7 @@ protected:
    * the PCA matrix.
    *
    */
-  inline void update_pca_matrix(std::string new_pca_matrix_file, int pca_nkeep)
+  inline void update_pca_matrix(std::string new_pca_matrix_file, size_t pca_nkeep)
   {
     this->pca_file_ = new_pca_matrix_file;
     this->pca_nkeep_=pca_nkeep;
@@ -325,14 +325,13 @@ protected:
       float num;
       getline(ifs, line);
       std::istringstream iss(line);
-      int i=0;
       do 
       {
         iss >> num;
         this->pca_mean_.push_back(num);
       }while(!iss.eof());
     }
-    int dout=0;
+    size_t dout=0;
     while (ifs.good())
     {
       float num;
@@ -371,7 +370,7 @@ protected:
     std::vector< std::vector<float> > PCA_t;
     PCA_t.resize(nkeep, std::vector<float>(this->pca_matrix_.size()));
     for(int i=0;i<nkeep;i++)
-      for(int j=0;j<this->pca_matrix_.size();j++)
+      for(size_t j=0;j<this->pca_matrix_.size();j++)
       {
 	PCA_t[i][j]=this->pca_matrix_[j][i];
       }