NAME
    tolower		- convert to lower case

SYNTAX
    #include <ctype.h>

    int tolower( c )
      int c;

    int _tolower( c )
      int c;

DESCRIPTION
    These routines convert upper case ASCII characters
    into lower case characters. Tolower(3) may be called
    with any ASCII value from 0 to 127, if <c> is not an
    upper case character then it is returned unchanged.

    _tolower(3) is a macro which can only be used if <c>
    is an upper case character.

RESULTS
    Argument converted to lower case.

SEE ALSO
    ctype(3), toascii(3), toupper(3)