Function insertFilter

Opcodes/filter.c:468–477

insertFilter -- delay-line update routine * * Inserts the passed value into the currPos and increments the * currPos pointer modulo the length of the delay line. * */

 *
 */
static void insertFilter(FILTER* p, double val)
{
    /* Insert the passed value into the delay line */
    *p->currPos = val;

    /* Update the currPos pointer and wrap modulo the delay length */
    if (((double*) (++p->currPos)) >
        ((double*)p->delay.auxp + (p->ndelay-1)) )
      p->currPos -= p->ndelay;
}

/* Compute polynomial coefficients from the roots */
/* The expanded polynomial is computed as a[0..N] in