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-rw-r--r--2.3-1/src/c/statisticsFunctions/variancef/cvariancefa.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/2.3-1/src/c/statisticsFunctions/variancef/cvariancefa.c b/2.3-1/src/c/statisticsFunctions/variancef/cvariancefa.c
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+/*
+ * 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 "variancef.h"
+#include "division.h"
+
+floatComplex cvariancefa(floatComplex *in1, int size, floatComplex *in2)
+
+{
+ int i = 0 ;
+ floatComplex temp = FloatComplex (0.0f, 0.0f );
+ floatComplex accumulate =FloatComplex (0.0f, 0.0f );
+ floatComplex accumulateFre = FloatComplex (0.0f, 0.0f );
+
+ floatComplex meanf = cmeanfa (in1 , size , in2);
+
+ for(i = 0 ; i < size ; ++i)
+ {
+ temp = cpows ( cdiffs (in1[i] , meanf ) ,FloatComplex (2.0f, 0.0f ) );
+ temp = cmuls( in2[i] , temp);
+
+ accumulate = cadds( temp , accumulate);
+ accumulateFre = cadds (in2[i] ,accumulateFre );
+ }
+ return crdivs (accumulate , cdiffs (accumulateFre ,FloatComplex(1.0f,0.0f)) );
+}