1 files changed, 130 insertions, 0 deletions
diff --git a/2.3-1/src/c/matrixOperations/diag/ddiagexa.c b/2.3-1/src/c/matrixOperations/diag/ddiagexa.c
new file mode 100644
index 00000000..0e6c314c
--- /dev/null
+++ b/2.3-1/src/c/matrixOperations/diag/ddiagexa.c
@@ -0,0 +1,130 @@
+/* Copyright (C) 2016 - IIT Bombay - FOSSEE
+
+ This file must be used under the terms of the CeCILL.
+ This source file is licensed as described in the file COPYING, which
+ you should have received as part of this distribution.  The terms
+ are also available at
+ http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+ Author: Mushir
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+
+#include "diag.h"
+void ddiagexa(double *in, int _row,int _column,int extract_post,double *out)
+{
+     
+    
+    int  j;
+    if(_row == _column)
+     {
+         if(extract_post <= 0)
+	   {
+      	     for ( j = 0 ; j < _column ; j++ )
+               {
+                
+                 
+                  out[j] = in[((_column+1)*j)-extract_post] ;  
+                   
+               }  
+           }
+         else
+	    {
+      	       for ( j = extract_post ; j < _column ; j++ )
+                  {
+                
+                 
+                   out[j-extract_post] = in[((_column+1)*j)-extract_post] ;  
+                   
+                 }
+    	     }  
+
+     } 
+     else if(_row > _column)
+     {
+
+        if(extract_post >=0)
+          {
+       
+             for(j = extract_post; j < _column;j++)
+               {
+
+                   out[j-extract_post] = in[((_row+1)*j)-extract_post];
+               }
+             
+
+          }
+        else
+          {
+                
+              if((abs(extract_post) <= (_row - _column)))
+                {
+                   for(j = 0; j < _column ; j++)  
+                      {
+                         out[j] = in[((_row+1)*j)-extract_post];
+                      
+                      }
+                }
+               else
+                 {
+
+                     for(j=0; j < (_row + extract_post);j++) 
+                       {
+
+                            out[j] = in[((_row+1)*j)-extract_post];
+             
+                       }
+                                    
+
+
+                 }
+
+          }
+
+      }
+     else if (_row < _column)
+      {
+        
+        if(extract_post > 0)
+         {
+             if((extract_post <= (_column - _row)))
+              {
+                for(j=extract_post;j < _column;j++) 
+                 {
+                      out[j-extract_post] = in[((_row+1)*j)-extract_post]; 
+                 }
+                  
+              }
+            else
+               {
+                 for(j=extract_post;j < _column;j++) 
+                  {
+                      out[j-extract_post] = in[((_row+1)*j)-extract_post]; 
+                  }
+
+              }  
+
+         }   
+         else
+            {
+              
+                 
+                 for(j=0;j < (_row+extract_post);j++)
+                    {
+
+                        out[j] =  in[((_row+1)*j)-extract_post];            
+
+
+
+                    }
+
+
+
+            }
+       
+       
+      }
+         
+
+}
+