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diff --git a/2.3-1/src/c/elementaryFunctions/nextpow2/dnextpow2a.c b/2.3-1/src/c/elementaryFunctions/nextpow2/dnextpow2a.c
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+/* Copyright (C) 2017 - 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
+ Organization: FOSSEE, IIT Bombay
+ Author: Ukasha Noor
+ Email: toolbox@scilab.in
+*/
+
+#include "nextpow2.h"
+#include <math.h>
+
+void dnextpow2a(double *in,int size,double *out)
+{
+ int i,j,s;
+ double k;
+ i=2;
+ for(s=0;s<size;s++)
+ {
+ j=-1;
+ do{
+ j++;
+ k=pow(i,j);
+ }while(in[s]>k);
+ out[s]=j;
+ }
+}