Method Sub

library/cpp/expression/expression_variable.cpp:291–293

    return ToDouble() + secondOperand.ToDouble();
}
double TExpressionVariable::Sub(const TExpressionVariable& secondOperand) const {
    return ToDouble() - secondOperand.ToDouble();
}
double TExpressionVariable::Mult(const TExpressionVariable& secondOperand) const {
    return ToDouble() * secondOperand.ToDouble();
}