added matrix inverse computation functions and updated some comments

1 files changed, 55 insertions, 0 deletions

diff --git a/src/matrixOperations/inversion/sinverma.c b/src/matrixOperations/inversion/sinverma.c
new file mode 100644
index 00000000..30f8173e
--- /dev/null
+++ b/src/matrixOperations/inversion/sinverma.c
@@ -0,0 +1,55 @@
+/*
+ *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ *  Copyright (C) 2008-2008 - INRIA - Allan SIMON
+ *
+ *  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
+ *
+ */
+
+
+
+#include "matrixInversion.h" 
+#include "lapack.h" 
+#include <stdio.h>
+
+void sinverma ( float* in, float* out, int leadDimIn )
+{
+
+	int i = 0 ;
+	/* these 3 variable are created to permit to use the value in the fortran functions 
+	   because they need double matrix as arguments and we can't cast directly the pointers
+	   without having problems , i know that's ugly */
+	double *dblin	= NULL;
+	double *dblout	= NULL;	
+
+	
+	
+	/* Array allocations*/
+	dblin		= (double*)malloc(sizeof(double) * (unsigned int)(leadDimIn * leadDimIn));			 
+	dblout		= (double*)malloc(sizeof(double) * (unsigned int)(leadDimIn * leadDimIn));
+
+
+
+	/*copy and cast all the float value into double value */								
+	for ( i = 0 ; i < (leadDimIn * leadDimIn) ; i ++ )
+		{        
+		dblin[i] = (double) in[i]  ;
+		}
+    
+    dinverma ( dblin, dblout, leadDimIn );
+
+                     
+	for ( i = 0 ; i < (leadDimIn * leadDimIn) ; i++ )
+        {
+		out[i] =(float) dblout[i] ;
+
+        }							
+
+    free ( dblin);
+    free ( dblout);                    
+
+}