[COD] IsNumeric V2

/*
 *   IsNumeric V2
 *
 *
 * @author    : DraKiNs
 * @date      : 04 Jul 2011
 * @update    : 11 Jul 2011
 * @thanks    : DracoBlue & Garfield
 * @Return    : if string is numeric return true, else false (accept negative numbers)
*/

IsNumeric(const string[])
{
        for (new i = (string[0] == 0x2D && string[1] ? 1 : 0),j = strlen(string); i < j; i++)
        {
                if (string[i] > 0x39 || string[i] < 0x30) return false;
        }
        return true;
}