Converts a set of age values from the specified time unit to years.

## Arguments

- age
The ages to convert.

A numeric vector is expected.

- age_unit
Age unit.

Either a string containing the time unit of all ages in

`age`

or a character vector containing the time units of each age in`age`

is expected. Note that permitted values are cases insensitive (e.g.`"YEARS"`

is treated the same as`"years"`

and`"Years"`

).Permitted Values:

`"years"`

,`"months"`

,`"weeks"`

,`"days"`

,`"hours"`

,`"minutes"`

,`"seconds"`

,`NA_character_`

.

## Details

Returns a numeric vector of ages in years as doubles. Note
that passing `NA_character_`

as a unit will result in an `NA`

value for the outputted
age. Also note, underlying computations assume an equal number of days in each
year (365.25).

## See also

Date/Time Computation Functions that returns a vector:
`compute_dtf()`

,
`compute_duration()`

,
`compute_tmf()`

,
`convert_date_to_dtm()`

,
`convert_dtc_to_dtm()`

,
`convert_dtc_to_dt()`

,
`impute_dtc_dtm()`

,
`impute_dtc_dt()`