C++ meaning |= and &=

Question

I have a part of code that contains the following functions:

void Keyboard(int key)
{
    switch (key) {
    case GLFW_KEY_A: m_controlState |= TDC_LEFT; bre         


        

Answer 1

These are bitwise AND and OR operations. The lines you mentioned are equivalent to:

m_controlState = m_controlState | TDC_LEFT;
m_controlState = m_controlState & ~TDC_LEFT