[tools] numberic / float checker

bool isNumeric(const char* pszInput, int nNumberBase)
{
    std::string base = "0123456789ABCDEF";
    std::string input = pszInput;

    return (input.find_first_not_of(base.substr(0, nNumberBase)) == std::string::npos);
}

bool isFloat(std::string myString)
{
    std::istringstream iss(myString);
    float f;
    iss >> std::noskipws >> f;  // noskipws considers leading whitespace invalid
                                // Check the entire string was consumed and if either failbit or badbit is set
    return iss.eof() && !iss.fail();
}