/***************************************************************
 *
 *	lowpass.c
 *	 the DC normalized low-pass function
 *
 *	1/3/95		bfs initial version
 *
 */

#include "lowpass.h"

float
low_pass_filter(struct lp_info* lp)
{
    lp->out_data = lp->in_data * (1.0 - lp->coef)
	+ lp->out_data * lp->coef;

    return lp->out_data;
}