added functions which computes variances , the float complex functions seems to have a weak precision ( 1-e04 instead of 1-e06 for some value )

1 files changed, 32 insertions, 0 deletions

diff --git a/src/statisticsFunctions/variance/srowvariancea.c b/src/statisticsFunctions/variance/srowvariancea.c
new file mode 100644
index 00000000..c3ae9dd3
--- /dev/null
+++ b/src/statisticsFunctions/variance/srowvariancea.c
@@ -0,0 +1,32 @@
+/*
+ *  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"
+
+void srowvariancea(float *in, int lines, int columns, float* out){
+    
+    int i = 0 ;
+    
+    
+    
+    float* mean = (float*) malloc( sizeof (float) * (unsigned int) columns );  
+    float* transp = (float*) malloc ( sizeof (float) *(unsigned int) (lines*columns));
+    
+    stransposea ( in , lines , columns , transp ) ;
+    
+    for ( i = 0; i < columns ; i++)
+    out[i] = svariancea ( transp + i*lines , lines ) ;
+    
+
+    free (transp);
+    free ( mean );
+}