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authorJorawar Singh2017-06-30 11:54:22 +0530
committerJorawar Singh2017-06-30 11:54:22 +0530
commita7d283ae2899b2530ac70a2453d4db05d03d609d (patch)
treefb93a9edddeee4601c47ce73e173331fa3addac8 /src/c/signalProcessing/cheb2mag
parentaef4e8398f2b1848b0e4cdd9580dbbe93e4006f9 (diff)
parentbee6bf6e37f6c36fb18b6132702e1528b7edafc2 (diff)
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merged main repo with local
Diffstat (limited to 'src/c/signalProcessing/cheb2mag')
-rw-r--r--src/c/signalProcessing/cheb2mag/cheb2mag.h27
-rw-r--r--src/c/signalProcessing/cheb2mag/dcheb2mags.c49
-rw-r--r--src/c/signalProcessing/cheb2mag/int_cheb2mag.h18
3 files changed, 94 insertions, 0 deletions
diff --git a/src/c/signalProcessing/cheb2mag/cheb2mag.h b/src/c/signalProcessing/cheb2mag/cheb2mag.h
new file mode 100644
index 0000000..0516ca5
--- /dev/null
+++ b/src/c/signalProcessing/cheb2mag/cheb2mag.h
@@ -0,0 +1,27 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+
+#ifndef __CHEB2MAG_H__
+#define __CHEB2MAG_H__
+#include "types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void dcheb2mags(double n,double omegar, double A, double* sample,int size,double* oup);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* __CHEB2MAG_H__ */
diff --git a/src/c/signalProcessing/cheb2mag/dcheb2mags.c b/src/c/signalProcessing/cheb2mag/dcheb2mags.c
new file mode 100644
index 0000000..006c591
--- /dev/null
+++ b/src/c/signalProcessing/cheb2mag/dcheb2mags.c
@@ -0,0 +1,49 @@
+/* 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 "cheb2mag.h"
+void dcheb2mags(double n,double omegar, double A, double* sample,int size,double* oup)
+{
+ double e;
+ //e=sqrt(A*A-1);
+ e=1/(pow(10,A/10)-1);
+ double x,k,cn,h,tp;
+ int i;
+ for(i=0;i<size;i++)
+ {
+ x=omegar/sample[i];
+ if(x<=1)
+ {
+ tp=acos(x);
+ cn=cos(n*tp);
+ if(x==1)
+ {
+ h=1/(1+A*A-1);
+ }
+ else
+ {
+ h=1/(1+((A*A-1)/(cn*cn)));
+ }
+
+ }
+ else
+ {
+ tp=acosh(x);
+ cn=cosh(n*tp);
+ h=e*(cn*cn)/(1+e*(cn*cn));
+
+ }
+ oup[i]=h;
+ }
+}
+
diff --git a/src/c/signalProcessing/cheb2mag/int_cheb2mag.h b/src/c/signalProcessing/cheb2mag/int_cheb2mag.h
new file mode 100644
index 0000000..05b77c2
--- /dev/null
+++ b/src/c/signalProcessing/cheb2mag/int_cheb2mag.h
@@ -0,0 +1,18 @@
+/* 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: Ankit Raj
+ Organization: FOSSEE, IIT Bombay
+ Email: toolbox@scilab.in
+ */
+
+#ifndef __INT_CHEB2MAG_H__
+#define __INT_CHEB2MAG_H__
+
+#define d0d0d0d2cheb2magd2(n,omegar,A,sample,size,oup) dcheb2mag(n,omegar,A,sample,size,oup)
+
+#endif /* !__INT_CHEB2MAG_H__! */