Question

I have a class cnVector that represents a point in 3 dimensional space.
Its operators + – * / are used intensively.
Their implementation is very short:

cnVector cnVector::operator + (const cnVector& v) const {
    return cnVector(
        x + v.x,
        y + v.y,
        z + v.z );
}

My question is, because this function is very short, should I inline it although its intensive use? or would it generate too much code when using it that much?

Answer 1

Yes you probably should. The good use case for the inline keyword in c++ is: small functions, heavily used.

See also http://msdn.microsoft.com/en-us/library/1w2887zk%28v=vs.80%29.aspx