fir

gistfile1.txt

	// The output at time 0 is the sum of the
	// previous num_taps samples times the taps
	int j;
	for(j = 0; j < num_taps; j++) {
		float2 sample = 0;

		int sample_index = i - (num_taps - 1);

		if (sample_index < 0) {
			sample = lastBlock[2048+sample_index];
		} else {
			sample = input[sample_index];
		}

		output[i] += sample * (float2)taps[j];
	}

	// Copy the input to the last block,
	// this ensures continuity
	lastBlock[i] = input[i];