CTYPE(3)                  386BSD Programmer's Manual                  CTYPE(3)

NAME
     isalpha, isupper, islower, isdigit, isxdigit, isalnum, isspace, ispunct,
     isprint, isgraph, iscntrl, isascii, toupper, tolower, toascii - character
     classification macros

SYNOPSIS
     #include <ctype.h>
     int c

     isalpha(c)

     isupper(c)

     islower(c)

     isdigit(c)

     isxdigit(c)

     isalnum(c)

     isspace(c)

     ispunct(c)

     isprint(c)

     isgraph(c)

     iscntrl(c)

     isascii(c)

     toupper(c)

     tolower(c)

     toascii(c)

DESCRIPTION
     The above macros perform character tests and conversions on the integer
     c.

     See the specific manual pages for more information.

SEE ALSO
     isalpha(3),  isupper(3),  islower(3),  isdigit(3),  isxdigit(3),
     isalnum(3),  isspace(3),  ispunct(3),  isprint(3),  isgraph(3),
     iscntrl(3),  isascii(3),  toupper(3),  tolower(3),  toascii(3),  ascii(7)

STANDARDS
     These functions, except for toupper(), tolower() and toascii(), conform
     to ANSI C3.159-1989 (``ANSI C'').

BSD Experimental                April 19, 1991                               1