The function get_n_whole_part() counts the number of digits of the
whole number portion of a decimal number.
get_n_whole_part(x)An integer representing the number of digits of the whole number portion of the decimal number that was handed over.
A decimal number (or an integer) or a vector of decimal numbers (or of integers).
The function get_n_whole_part() counts the number of digits
of the whole number portion of a decimal number.
print_val, set_limits,
get_text_annotation.