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what are the operations of the six main trig functions (lemmy.ml)

submitted 11 months ago* (last edited 11 months ago) by jackpot@lemmy.ml to c/asklemmy@lemmy.ml

13 comments fedilink hide all child comments

sorry for my layman terminology, but to my understanding as a coder a function has a name, parameters, arguments and operations. if sin is the name, and its parameters are side opposite and hypotenuse, and its arguments are context dependent, what is the operation itself? am i making sense?

def sin (hypotenuse, opposite):
     ??!?!?!!?

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[–] Haus@kbin.social 8 points 11 months ago (1 children)

I didn't get what you were asking until I started to answer. The parameter is the angle. The algorithm is https://en.wikipedia.org/wiki/CORDIC . In (most?) compiled languages, this algorithm is performed on hardware. In (some?) interpreted languages, it's done in hardware.

[–] jackpot@lemmy.ml 2 points 11 months ago (1 children)

whats the difference between an algorhythm and a function

[–] OwenEverbinde@lemmy.myserv.one 9 points 11 months ago* (last edited 11 months ago)

An algorithm is the meat of a function. It's the "how."

And if you're using someone else's function, you won't touch the "how" because you'll be interacting with the "what." (You use a function for what it does.)

You will be creating your own algorithm by writing code, however. Because an algorithm is just a sequence of steps that, taken together, constitute an attempt at achieving an objective.

Haus is saying all the little steps that go into approximating sine occur directly on the hardware.