Function builtin_sort 

fn builtin_sort(
    args: &[RValue],
    named: &[(String, RValue)],
) -> Result<RValue, RError>

Sort a vector.

@param x a vector @param decreasing logical; sort in descending order? (default FALSE) @param na.last logical; TRUE puts NAs at end, FALSE at beginning, NA removes them (default TRUE) @return sorted vector