Diff: Operators.cpp

Revision:

7:7a564cf28ab6

Parent:

5:a4014ab0a8cf

Child:

8:1774aa06ab99

--- a/Operators.cpp	Thu Feb 02 04:28:35 2017 +0000
+++ b/Operators.cpp	Thu Feb 02 04:29:41 2017 +0000
@@ -1,15 +1,16 @@
-/**
- * @brief  Source Code for the Operator of Matrix Class.
- * @file   Operators.cpp
- * @author Ernesto Palacios
- * 
- * Created on September 2011.
- *
- * Develop Under  GPL v3.0 License
- * http://www.gnu.org/licenses/gpl-3.0.html
- * 
- */
+
+ //* @brief  Source Code for the Operator of Matrix Class.
+ //* @file   Operators.cpp
+ //* @author Ernesto Palacios
+ //* 
+ //* Created on September 2011.
+ //*
+ //* Develop Under  GPL v3.0 License
+ //* http://www.gnu.org/licenses/gpl-3.0.html
+ //* 
+ //*/
 #include "mbed.h"
+
 #include "Matrix.h"
 
 /// Subindex in Matrix left side
@@ -20,7 +21,11 @@
     if( row >= _nRows || col >= _nCols)
     {
         printf("\n\nError:\nOut of limits @ Matrix::operator()\n");
-    }else{
+
+        return _matrix[0][0];//暫時這樣stanley
+    }
+    else
+    {
         return _matrix[row][col];
     }
 }
@@ -33,6 +38,7 @@
     if( row >= _nRows || col >= _nCols)
     {
         printf("\n\nError:\nOut of limits @ Matrix::operator()\n");
+        return _matrix[0][0];//暫時這樣stanley
     }else{
         return _matrix[row][col];
     }
@@ -110,7 +116,12 @@
 
         return leftM;
 
-    }else{ printf( "\n\nERROR:\nDiferent Dimensions @ += operator\n" );  }
+    }else{ 
+        printf( "\n\nERROR:\nDiferent Dimensions @ += operator\n" );  
+        return leftM;//暫時這樣stanley
+        
+    
+    }
 }
 
 
@@ -128,10 +139,31 @@
 
     }else{
         printf( "\n\nERROR:\nDiferent Dimensions @ -= operator\n" );
+
+        return leftM;//暫時這樣stanley
+        
     }
 }
 
+//Original
+//Matrix& operator *=( Matrix& leftM, const Matrix& rightM )
+//{
+//    if( leftM._nCols == rightM._nRows )
+//    {
+//        Matrix resultM ( leftM._nRows, rightM._nCols );
+//
+//        for( int i = 0; i < resultM._nRows; i++ )
+//            for( int j = 0; j < resultM._nCols; j++ )
+//                for( int m = 0; m < rightM._nRows; m++ )
+//                    resultM._matrix[i][j] += leftM._matrix[i][m] * rightM._matrix[m][j];
+//
+//        return resultM;
+//    }else{
+//        printf( "\n\nERROR:\nDiferent Dimensions @ *= operator\n" );
+//    }
+//}
 
+//stanley
 Matrix& operator *=( Matrix& leftM, const Matrix& rightM )
 {
     if( leftM._nCols == rightM._nRows )
@@ -143,13 +175,18 @@
                 for( int m = 0; m < rightM._nRows; m++ )
                     resultM._matrix[i][j] += leftM._matrix[i][m] * rightM._matrix[m][j];
 
-        return resultM;
+        leftM=resultM;//stanley
+
+       // return resultM;//org
+         return leftM;//stanley
     }else{
         printf( "\n\nERROR:\nDiferent Dimensions @ *= operator\n" );
+
+        return leftM;//暫時這樣stanley
+        
     }
 }
 
-
 Matrix& operator *=( Matrix& leftM, float number )
 {
     for( int i = 0; i < leftM._nRows; i++ )
@@ -197,6 +234,9 @@
 
     }else{
         printf( "\n\nERROR\nDiferent Dimensions @ + operator \n" );
+
+        Matrix NULL_M( 1, 1 );//暫時這樣stanley
+        return NULL_M;
         //Matrix error(4);
         //error.Clear();
         //return error;
@@ -236,7 +276,9 @@
 
     }else{
         printf( "\n\nERROR:\nDiferent Dimensions @ + operator \n" );
-
+        
+        Matrix NULL_M( 1, 1 );//暫時這樣stanley
+        return NULL_M;
     }
 }
 
@@ -276,6 +318,9 @@
     } else {
 
         printf("\n\nERROR:\nDiferent Dimension matrices @ * operator");
+
+        Matrix NULL_M( 1, 1 );//暫時這樣stanley
+        return NULL_M;
     }
 
 }
@@ -317,4 +362,4 @@
 
         return leftM;
     }
-}
+}
\ No newline at end of file