/******************************************************************************/
/* iir.h
/******************************************************************************/
#ifndef FIR_H
#define FIR_H

#define	pi			3.1415926535897932384626433832795


#if defined(__cplusplus)
extern "C" {
#endif
/******************************************************************************/

typedef struct _sFIRCoeff
{

	float *pB;
	float *pX;

}FIRCOEFF;

void Sinc(float *pY, int M, float s, float f, int len);

/******************************************************************************/
void FIRCalcDCRemovalCoeff(struct _sFIRCoeff *pCoeff, int N);
void FIR(struct _sFIRCoeff *pCoeff, float *xn, float *yn, int order, int len);
void FIRInit(struct _sFIRCoeff *pCoeff, float *pB, int order);
void FIRAlloc(struct _sFIRCoeff *pCoeff, int order);
void FIRFree(struct _sFIRCoeff *pCoeff);

/******************************************************************************/
#if defined(__cplusplus)
}
#endif

#endif /* FIR_H */