is_hex_digit Function

public elemental function is_hex_digit(c)

Checks whether c is a digit in base 16 (0 .. 9, A .. F, a .. f).

Arguments

Type IntentOptional Attributes Name
character(len=1), intent(in) :: c

The character to test.

Return Value logical


Source Code

   elemental logical function is_hex_digit(c)
      character(len=1), intent(in) :: c
          !! The character to test.
      is_hex_digit = (c >= "0" .and. c <= "9") .or. (c >= "a" .and. c <= "f") &
                     .or. (c >= "A" .and. c <= "F")
   end function is_hex_digit