From: ndjinga <ndjinga>
Date: Thu, 28 May 2009 12:49:21 +0000 (+0000)
Subject: Added the functions rowSum and colSum that compute the sum of entries of a matrix... 
X-Git-Tag: V5_1_2rc1
X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=9d6b5feb9c6bf141a2b2603577ed07f4b26c1cfc;p=tools%2Fmedcoupling.git

Added the functions rowSum and colSum that compute the sum of entries of a matrix according to the rows or columns
---

diff --git a/src/INTERP_KERNEL/InterpKernelMatrix.hxx b/src/INTERP_KERNEL/InterpKernelMatrix.hxx
index c0468700a..416949a2c 100755
--- a/src/INTERP_KERNEL/InterpKernelMatrix.hxx
+++ b/src/INTERP_KERNEL/InterpKernelMatrix.hxx
@@ -231,7 +231,7 @@ namespace INTERP_KERNEL
         configure();
       
 			for (int icol=0; icol< nb_cols; icol++)
-				output[icol]=0;
+				output[icol]=0.;
       for (int i=0; i< _nb_rows; i++)
         {
 					for (unsigned int j=_ncols_offset[i]; j< _ncols_offset[i+1]; j++) {
@@ -257,7 +257,7 @@ namespace INTERP_KERNEL
         configure();
       
 			for (int icol=0; icol< nb_cols; icol++)
-				output[icol]=0;
+				output[icol]=0.;
       for (int i=0; i< _nb_rows; i++)
         {
 					for (unsigned int j=_ncols_offset[i]; j< _ncols_offset[i+1]; j++) {
@@ -267,8 +267,46 @@ namespace INTERP_KERNEL
           }
         }
     }
-    
-    /*! This operation freezes the profile of the matrix
+		
+    /*
+			Sums the coefficients of each column of the matrix
+			nb_cols is the number of columns of the matrix, (it is not an attribute of the class) 
+			The vector output must be dimensioned to nb_cols
+		*/
+		void colSum(std::vector< T >& output, int nb_cols)
+		{
+			if (!_is_configured)
+        configure();
+			
+			for (int icol=0; icol< nb_cols; icol++)
+				output[icol]=0.;
+      for (int i=0; i< _nb_rows; i++)
+        {
+					for (unsigned int j=_ncols_offset[i]; j< _ncols_offset[i+1]; j++) {
+            int icol = _cols[j];
+            output[icol]+=_coeffs[j];
+          }
+        }
+		}
+
+		/*
+			Sums the coefficients of each row of the matrix
+			The vector output must be dimensioned to _nb_rows
+		*/
+		void rowSum(std::vector< T >& output)
+		{
+			if (!_is_configured)
+        configure();
+			
+			for (int i=0; i< _nb_rows; i++)
+        {
+          output[i]=0;
+          for (unsigned int j=_ncols_offset[i]; j< _ncols_offset[i+1]; j++) 
+            output[i]+=_coeffs[j];
+				}
+		}
+
+		/*! This operation freezes the profile of the matrix
       and puts it under a CSR form so that it becomes
       efficient both in terms of memory occupation and
       in terms of multiplication */
@@ -303,6 +341,11 @@ namespace INTERP_KERNEL
     {
       return _auxiliary_matrix[irow];
     }
+
+		int getNbRows()
+		{
+			return _nb_rows;
+		}
     
   };