
ISALNUM(3)                 UNIX Programmer's Manual                 ISALNUM(3)

NNAAMMEE
     iissaallnnuumm - alphanumeric character test

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<ccttyyppee..hh>>

     _i_n_t
     iissaallnnuumm(_i_n_t _c)

DDEESSCCRRIIPPTTIIOONN
     The iissaallnnuumm() macro tests for any character for which isalpha(3) or is-
     digit(3) is true.

RREETTUURRNN VVAALLUUEESS
     The iissaallnnuumm() macro returns zero if the character tests false and returns
     non-zero if the character tests true.

SSEEEE AALLSSOO
     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)

SSTTAANNDDAARRDDSS
     The iissaallnnuumm() function conforms to ANSI C3.159-1989 (``ANSI C'').

BSD Experimental                 June 29, 1991                               1




































