NAME    [Toc]    [Back]

     isxdigit - hexadecimal-digit character test

SYNOPSIS    [Toc]    [Back]

     #include <ctype.h>

     int
     isxdigit(int c);

DESCRIPTION    [Toc]    [Back]

     The isxdigit()  function  tests  for  any  hexadecimal-digit
character.

RETURN VALUES    [Toc]    [Back]

     The  isxdigit()  macro  returns  zero if the character tests
false or non-zero
 if the character tests true.

SEE ALSO    [Toc]    [Back]

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

STANDARDS    [Toc]    [Back]

     The isxdigit() function conforms to ANSI X3.159-1989 (``ANSI
C'').

CAVEATS    [Toc]    [Back]

     The  argument  to isxdigit() must be EOF or representable as
an unsigned
     char; otherwise, the result is undefined.

OpenBSD     3.6                           June      29,      1991