fn combined_range_float(
function: MixedRangeFunction,
bounds: &[(usize, usize)],
timestamps: &TimestampMillisecondArray,
floats: &Float64Array,
histograms: &StructArray,
float_valid: &[bool],
histogram_valid: &[bool],
float_prefix: &[usize],
histogram_prefix: &[usize],
) -> Result<ColumnarValue>