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diff --git a/2.3-1/src/c/statisticsFunctions/stdev/dstdeva.c b/2.3-1/src/c/statisticsFunctions/stdev/dstdeva.c
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+/* Copyright (C) 2016 - IIT Bombay - FOSSEE
+
+ 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
+ Author: Abhinav Dronamraju
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+
+
+#include "stdev.h"
+#include <math.h>
+#include "mean.h"
+#include "pow.h"
+#include "variance.h"
+#include "types.h"
+#include "uint16.h"
+
+double dstdeva(double *in, int size)
+{
+ double variance = dvariancea(in, size);
+
+ return dpows(variance, 0.5);
+
+
+}