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

NAME
     isalnum - alphanumeric character test

SYNOPSIS
     #include <ctype.h>

     int
     isalnum(int c)

DESCRIPTION
     The isalnum() macro tests for any character for which isalpha(3) or
     isdigit(3) is true.

RETURN VALUES
     The isalnum() macro returns zero if the character tests false and returns
     non-zero if the character tests true.

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

STANDARDS
     The isalnum() function conforms to ANSI C3.159-1989 (``ANSI C'').

BSD Experimental                 June 29, 1991                               1