[ncmncm]

That is the way to do the math, but not the way to write the code.

That said, I would like for my compiler to combine any multiplications involved down to one factor for input to the fastest sin/cos operations the machine has. And, to treat resulting multipliers close enough to 1, 1/2, and 1/4 as exact, and then skip the multiplication entirely.

But the second part is a hard thing to ask of a compiler.

[doliveira]

Yeah, seems to me that languages should allow way more semantic expression than most do today.

I wish I had done CS, those kinds of compiler optimization sounds so fun. I'd love to work on that

[ncmncm]

Good news, optimization is engineering, not CS. CS is all about what a program would eventually do, if you were ever to run it. Once you run it, you have moved to the domain of technicians. Engineering is about making it run better.

[ouid]

Compiler optimization is very much CS.

[ncmncm]

Only in practice. And, mostly implemented by engineers.