isxdigit man page on OpenBSD

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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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