Function gst_ut 

pub fn gst_ut(
    greenwich_sidereal_hours: f64,
    greenwich_sidereal_minutes: f64,
    greenwich_sidereal_seconds: f64,
    greenwich_day: f64,
    greenwich_month: u32,
    greenwich_year: u32,
) -> f64

Convert Greenwich Sidereal Time to Universal Time.

Original macro name: GSTUT