Original Version

1 files changed, 53 insertions, 0 deletions

diff --git a/src/c/statisticsFunctions/stdevf/drowstdevfa.c b/src/c/statisticsFunctions/stdevf/drowstdevfa.c
new file mode 100644
index 00000000..c861f06b
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+++ b/src/c/statisticsFunctions/stdevf/drowstdevfa.c
@@ -0,0 +1,53 @@
+/*
+ *  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 "stdevf.h"
+
+
+void drowstdevfa(double *in1, int lines, int columns, double *in2, double* out){
+  int i = 0;
+  int j = 0;
+  double temp = 0.0f;
+  double accumulate = 0.0f;
+  double accumulateFre = 0.0f ;
+    
+  drowmeanfa(in1, lines, columns, in2, out );
+
+
+  /*we first multiply each cell of the input matrix by its coefficient*/
+  for (j = 0; j < columns; ++j)
+    {
+      accumulate = 0.0f;
+      accumulateFre= 0.0f;
+      temp = 0.0f;
+
+      for ( i = 0 ; i < lines; ++i )
+        {
+         temp = dpows (  (in1[lines*j + i]  - out[j] ) ,2 );
+         temp *= in2[lines*j + i];
+
+         accumulate += temp ;
+         accumulateFre += in2[lines*j + i];
+        } 
+
+      if (lines <= 1)
+       {
+        out[j] =  0.0 * accumulate ; 
+       }
+      else
+       {
+        out[j] = dsqrts(accumulate / (accumulateFre - 1));
+       }
+    }
+
+}