isxdigit(3) - NetBSD Manual Pages

ISXDIGIT(3)             NetBSD 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() macro returns zero if the character tests false and
     returns non-zero if the character tests true.


SEE ALSO

     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 result is undefined.

NetBSD 3.1                       June 29, 1991                      NetBSD 3.1