ZPS_2_1

void blockfir(short* input, const short* filter, short* output, int numSamples, int numFilter){
    int i;
    int j;

    for (i = 0; i < N; i++){
        bufor[i] = 0;
    }

    for(j = 0; j < N; j++){
        long y = 0;

            for(i = 0; i < N; i++){
                y = _smac(y, input[i], filter[i]);
            }

        output[j] = (short)(_sround(y) >> 16);
    }
}