#define printf(a) bin += " " + a;

string hextobin(string hex)
{
    //skip the "0x" if present at the first
    integer pos = 0;

    hex = llToLower(hex);
    string bin;

    if(llGetSubString(hex, 0, 1) == "0x")
        pos = 2;

    while (pos < llStringLength(hex))
    {
        switch(llGetSubString(hex, pos, pos))
        {
            case "0":
                printf("0000");
                break;
            case "1":
                printf("0001");
                break;
            case "2":
                printf("0010");
                break;
            case "3":
                printf("0011");
                break;
            case "4":
                printf("0100");
                break;
            case "5":
                printf("0101");
                break;
            case "6":
                printf("0110");
                break;
            case "7":
                printf("0111");
                break;
            case "8":
                printf("1000");
                break;
            case "9":
                printf("1001");
                break;
            case "A":
            case "a":
                printf("1010");
                break;
            case "B":
            case "b":
                printf("1011");
                break;
            case "C":
            case "c":
                printf("1100");
                break;
            case "D":
            case "d":
                printf("1101");
                break;
            case "E":
            case "e":
                printf("1110");
                break;
            case "F":
            case "f":
                printf("1111");
                break;
            default:
                printf("\nInvalid hexadecimal digit");
        }

        pos++;
    }
    return bin;
}


default {
    state_entry()
    {
        llSay(0, hextobin("0xff"));
    }
}