//
// Created by rick on 25-03-21.
//

#include <ctype.h>

int tolower(int c) {
    if (c > 0xFF) {
        // uh own
        return c;
    }
    if (c >= 'A' && c <= 'Z') {
        return c - 'A' + 'a';
    }
    return c;
}

int toupper(int c) {
    if (c > 0xFF) {
        // uh own
        return c;
    }
    if (c >= 'a' && c <= 'z') {
        return c - 'a' + 'A';
    }
    return c;
}

int isascii(int c) {
    return c <= 0x7F;
}

int isblank(int c) {
    return c == ' ' || c == '\t';
}

int iscntrl(int c) {
    return c <= 0x1F || c == 0x7F;
}

int isdigit(int c) {
    return c >= '0' && c <= '9';
}

int isgraph(int c) {
    return c > ' ' && c < 0x7F;
}

int islower(int c) {
    return c >= 'a' && c <= 'z';
}

int isprint(int c) {
    return c >= ' ' && c < 0x7F;
}

int ispunct(int c) {
    return (c > ' ' && c <= '@')
           || (c >= '[' && c <= '`')
           || (c >= '{' && c <= '~');
}

int isspace(int c) {
    return c == ' ' || (c >= '\t' && c <= '\r');
}

int isupper(int c) {
    return c >= 'A' && c <= 'Z';
}

int isxdigit(int c) {
    return isdigit(c) || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
}

int isalpha(int c) {
    return isupper(c) | islower(c);
}

int isalnum(int c) {
    return isalpha(c) || isdigit(c);
}