Tagging the 2.0 release of scilab2crelease-2.0

1 files changed, 35 insertions, 0 deletions

diff --git a/src/c/statisticsFunctions/variance/zvariancea.c b/src/c/statisticsFunctions/variance/zvariancea.c
new file mode 100644
index 00000000..92e2667d
--- /dev/null
+++ b/src/c/statisticsFunctions/variance/zvariancea.c
@@ -0,0 +1,35 @@
+/*
+ *  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 "variance.h"
+
+doubleComplex	zvariancea(doubleComplex *in, int size)
+{
+    int i = 0 ;
+    
+    doubleComplex sum  = DoubleComplex ( 0 , 0 ) ;
+    doubleComplex temp = DoubleComplex ( 0 , 0 ) ; 
+    doubleComplex variance = DoubleComplex ( 0 , 0 );
+    doubleComplex mean =  zmeana ( in , size ) ;
+
+    for ( i = 0 ; i < size ; i++)
+    {
+       temp = zdiffs( in[i] , mean ) ;
+       sum  = zadds ( sum , zpows ( temp  , DoubleComplex ( 2, 0) ) ); 
+      }
+ 
+    variance = zrdivs (sum , DoubleComplex ( (size - 1),0 ));
+  
+    return variance ;
+
+}
+