1 files changed, 33 insertions, 0 deletions
diff --git a/src/c/signalProcessing/zpbutt/dzpbutts.c b/src/c/signalProcessing/zpbutt/dzpbutts.c
new file mode 100644
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+++ b/src/c/signalProcessing/zpbutt/dzpbutts.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
+ Author: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+*/
+#include<stdio.h>
+#include<math.h>
+#include "zpbutt.h"
+#define PI 3.14159265
+double dzpbutts(double n,double fl,doubleComplex* out)
+{
+  double e= PI/(2.0*(n));
+  int k;
+  double rl,cpx,gain;
+  for(k=1;k<=n;k++)
+  {
+    double v=2.0*(double)k+(n)-1.0;
+    rl=(fl)*cos(e*v);
+    cpx=(fl)*sin(e*v);
+    out[k-1]=DoubleComplex(rl,cpx);
+  }
+  gain=pow(fl,n);
+
+return gain;
+  
+}
+