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