netbsd man page for isxdigit

ISXDIGIT(3)						   BSD Library Functions Manual 					       ISXDIGIT(3)

NAME
     isxdigit -- hexadecimal-digit character test

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     isxdigit(int c);

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

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

SEE ALSO
     ctype(3), 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
     The isxdigit() function conforms to ANSI X3.159-1989 (``ANSI C89'').

CAVEATS
     The argument to isxdigit() must be EOF or representable as an unsigned char; otherwise, the behavior is undefined.  See the CAVEATS section
     of ctype(3) for more details.

BSD
								  April 17, 2008							       BSD