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diff --git a/2.3-1/src/c/elementaryFunctions/radix_conversions/hex2dec/dhex2decs.c b/2.3-1/src/c/elementaryFunctions/radix_conversions/hex2dec/dhex2decs.c
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+++ b/2.3-1/src/c/elementaryFunctions/radix_conversions/hex2dec/dhex2decs.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: Shamik Guha
+ Email: toolbox@scilab.in
+*/
+#include <string.h>
+#include "hex2dec.h"
+#include <stdio.h>
+#include <math.h>
+
+double dhex2decs(double in)
+{
+ int n=0,rem=0, base=1;
+ double out=0.0;
+ n=(int)in;
+ while (n!=0)
+ {
+ rem = n%10;
+ out = out + (rem * base);
+ n = n / 10 ;
+ base = base * 16;
+ }
+ return out;
+}
+
+