isspecial(3) - Manual pages

NAME

isspecial, isspecial_l — special character test

library “libc”

#include <ctype.h>

int
isspecial(int c);

#include <xlocale.h>

int
isspecial_l(int c, locale_t locale);

The isspecial() and isspecial_l() functions test for a special character.

The _l-suffixed version takes an explicit locale argument, whereas the non-suffixed version uses the current global or per-thread locale.

The isspecial() and isspecial_l() functions return zero if the character tests false and returns non-zero if the character tests true.

The isspecial() function appeared in 4.4BSD.