def area_of_gaussian(amp, fwhm):
    """Calculate the integrated area of the Gaussian function.

    area_gauss = amp * fwhm / ((1. / np.sqrt(2*np.pi)) * 2*np.sqrt(2*np.log(2)))

    combining all constants in the denominator yields a factor of 0.93943727869965132

    Parameters
    ----------
    amp : float
        Amplitude value of the Gaussian component.
    fwhm : float
        FWHM value of the Gaussian component.

    """
    return amp * fwhm / 0.93943727869965132