isXDIGIT man page on OpenBSD
[printable version]
ISXDIGIT(3) OpenBSD Programmer's Manual ISXDIGIT(3)
NAME
isxdigit - hexadecimal-digit character test
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 or 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 C'').
CAVEATS
The argument to isxdigit() must be EOF or representable as an unsigned
char; otherwise, the result is undefined.
OpenBSD 4.9 May 31, 2007 OpenBSD 4.9
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