degToRad wasn’t the point, the list of cosines being computed at compile time was the point… or something similar, or something different… use your imagination.

degToRad wasn’t the point, the list of cosines being computed at compile time was the point… or something similar, or something different… use your imagination. I used cosf() because it’s clearly a function call doing compile time compute, and I suggested a list because it makes a more clear case for compile time compilation, and because that might start to get into the reasons one would want constexpr allocation. And yes of course a good compiler absolutely will turn things into constants if it can, regardless of how they’re declared, including without any special const* specifiers at all. That is not why either const or constexpr exist, right?