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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _utc_float(self):
 """Return UTC as a floating point Julian date."""

        tai = self.tai
        leap_dates = self.ts.leap_dates
        leap_offsets = self.ts.leap_offsets
        leap_reverse_dates = leap_dates + leap_offsets / DAY_S
        i = searchsorted(leap_reverse_dates, tai, 'right')
        return tai - leap_offsets[i] / DAY_S