Functions added - string related and signal processing

1 files changed, 35 insertions, 0 deletions

diff --git a/src/c/signalProcessing/cheb1mag/dcheb1mags.c b/src/c/signalProcessing/cheb1mag/dcheb1mags.c
new file mode 100644
index 00000000..a4a459d4
--- /dev/null
+++ b/src/c/signalProcessing/cheb1mag/dcheb1mags.c
@@ -0,0 +1,35 @@
+/* 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 "cheb1mag.h"
+void dcheb1mags(double n, double omegac, double epsilon, double* sample,int size,double* out)
+{
+	double x;
+	int j;
+	double tn;
+	for(j=0;j<size;j++)
+	{
+	x=sample[j]/omegac;
+	if(x<=1)
+	{
+	tn=cos(n*acos(x));
+	out[j]=1/(1+(epsilon*epsilon)*(tn*tn));
+	}
+	else
+	{
+	tn=cosh(n*acosh(x));
+	out[j]=1/(1+(epsilon*epsilon)*(tn*tn));
+	}
+	}
+}
+