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| author | Abhinav Dronamraju | 2017-09-29 22:00:40 +0530 |
|---|---|---|
| committer | Abhinav Dronamraju | 2017-09-29 22:00:40 +0530 |
| commit | 9bc7ad78e8d7d7acc4b9387aa592542832e80b31 (patch) | |
| tree | 7fce060665a91de5e5adb12d02003351c3d1fdfc /src/c/signalProcessing/filt_sinc | |
| parent | 33755eb085a3ca8154cf83773b23fbb8aac4ba3e (diff) | |
| parent | ac0045f12ad3d0938758e9742f4107a334e1afaa (diff) | |
| download | scilab2c-9bc7ad78e8d7d7acc4b9387aa592542832e80b31.tar.gz scilab2c-9bc7ad78e8d7d7acc4b9387aa592542832e80b31.tar.bz2 scilab2c-9bc7ad78e8d7d7acc4b9387aa592542832e80b31.zip | |
NEW FEATURES AND NEW FUNCTIONS
Diffstat (limited to 'src/c/signalProcessing/filt_sinc')
| -rw-r--r-- | src/c/signalProcessing/filt_sinc/dfilt_sincs.c | 49 | ||||
| -rw-r--r-- | src/c/signalProcessing/filt_sinc/filt_sinc.h | 28 | ||||
| -rw-r--r-- | src/c/signalProcessing/filt_sinc/int_filt_sinc.h | 18 |
3 files changed, 95 insertions, 0 deletions
diff --git a/src/c/signalProcessing/filt_sinc/dfilt_sincs.c b/src/c/signalProcessing/filt_sinc/dfilt_sincs.c new file mode 100644 index 00000000..1b7d1b18 --- /dev/null +++ b/src/c/signalProcessing/filt_sinc/dfilt_sincs.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 "filt_sinc.h" +void dfilt_sincs(double N,double fc,double* oup) +{ + double no2=(N-1)/2; + int ino2=(int)no2; + double wl=fc*2*M_PI; + int sz=N; + double xn[sz]; + double i; + int l,m; + for(i=-no2;i<=no2;i++) + { + l=i+no2; + xn[l]=sin(wl*i); + } + double xd[sz]; + double j; + printf("\n"); + for(j=-no2;j<=no2;j++) + { + m=j+no2; + xd[m]=M_PI*j; + } + if(ino2==no2) + { + xn[(int)no2]=2*fc; + xd[(int)no2]=1; + } + double x[sz]; + int k; + for(k=0;k<N;k++) + { + oup[k]=xn[k]/xd[k]; + } +} + diff --git a/src/c/signalProcessing/filt_sinc/filt_sinc.h b/src/c/signalProcessing/filt_sinc/filt_sinc.h new file mode 100644 index 00000000..43b24151 --- /dev/null +++ b/src/c/signalProcessing/filt_sinc/filt_sinc.h @@ -0,0 +1,28 @@ +/* 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 + */ + +#ifndef __FILT_SINC_H__ +#define __FILT_SINC_H__ +#include "types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +void u8filt_sincs(int N,double fc,double* oup); + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* __FILT_SINC_H */ + diff --git a/src/c/signalProcessing/filt_sinc/int_filt_sinc.h b/src/c/signalProcessing/filt_sinc/int_filt_sinc.h new file mode 100644 index 00000000..5b7b07ae --- /dev/null +++ b/src/c/signalProcessing/filt_sinc/int_filt_sinc.h @@ -0,0 +1,18 @@ +/* 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 + */ + +#ifndef __INT_FILT_SINC_H__ +#define __INT_FILT_SINC_H__ + +#define u80d0filt_sincd2(N,fc,oup) u8filt_sincs(N,fc,oup) + +#endif /* !__INT_FILT_SINC_H__! */ |