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- /*
- * Atpdec
- * Copyright (c) 2003 by Thierry Leconte (F4DWV)
- *
- * $Id$
- *
- * This library is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Library General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
- #include <filter.h>
-
- float fir( float *buff, float *coeff, int len)
- {
- int i;
- double r;
-
- r=0.0;
- for(i=0;i<len;i++) {
- r+=buff[i]*coeff[i];
- }
- return r;
- }
-
-
- void iqfir( float *buff, float *Icoeff, float *Qcoeff, int len, float *I,float *Q)
- {
- int i;
-
- *I=*Q=0.0;
- for(i=0;i<len;i++) {
- register double v=buff[i];
-
- *I+=v*Icoeff[i];
- *Q+=v*Qcoeff[i];
- }
- }
-
- float rsfir(float *buff,float *coeff,int len ,double offset ,double delta)
- {
- int i;
- double n;
- double out;
-
- out=0.0;
- for(i=0,n=offset;n<len;n+=delta,i++)
- out+=buff[i]*coeff[(int)n];
-
- return out;
- }
-
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