TOLOWER(3)                                             TOLOWER(3)

     NAME
          tolower, toupper - force upper or lower case

     SYNOPSIS
          tolower(character)

          toupper(character)

     DESCRIPTION
          If character is an upper case letter, tolower returns the
          same lower case letter, otherwise it returns the original
          character.

          Toupper does the reverse.

     SEE ALSO
          ctype(3)