NAME
isxdigit —
hexadecimal-digit character
test
LIBRARY
library “libc”
SYNOPSIS
#include
<ctype.h>
int
isxdigit(int
c);
DESCRIPTION
Theisxdigit()
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.