ISXDIGIT(3)

ISXDIGIT(3) | 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.

April 17, 2008 | NetBSD 5.99