Method rect

src/extended/PolyBLEPNode.cpp:273–287

    }

    double rect() const
    {
        double t2 = t + 1 - pulseWidth;
        t2 -= bitwise_or_zero(t2);

        double y = -2 * pulseWidth;
        if (t < pulseWidth)
        {
            y += 2;
        }

        y += blep(t, freqInSecondsPerSample) - blep(t2, freqInSecondsPerSample);

        return amplitude * y;
    }

    double saw() const
    {