#include <ctype.h>

#define NONE  0x00
#define ALPHA 0x01
#define DIGIT 0x02
#define LOWER 0x04
#define UPPER 0x08
#define SPECL 0x10
#define SPACE 0x20
#define PUNCT 0x40
#define GRAPH 0x80

// TODO.
static unsigned char tab[256] = {
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,

    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,

    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,

    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE,
    NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE, NONE
};

int isalnum(int c) {
    return tab[c & 0xFF] & (ALPHA | DIGIT);
}

int isalpha(int c) {
    return tab[c & 0xFF] & ALPHA;
}

int islower(int c) {
    return tab[c & 0xFF] & LOWER;
}

int isupper(int c) {
    return tab[c & 0xFF] & UPPER;
}

int isdigit(int c) {
    return tab[c & 0xFF] & DIGIT;
}

int isspecl(int c) {
    return tab[c & 0xFF] & SPECL;
}

int isspace(int c) {
    return tab[c & 0xFF] & SPACE;
}

int ispunct(int c) {
    return tab[c & 0xFF] & PUNCT;
}

int isgraph(int c) {
    return tab[c & 0xFF] & GRAPH;
}