Partitioned Slower Than Multiply?

Question

Well, this may seem like a strange question, but it is interesting. I encode iOS, and I was told that it is always better to multiply rather than divide the values, since it is faster.

I know that processors these days probably make this a problem, but my curiosity is better than me, and I wonder if anyone can shed light on this for me.

SO ..... My question is -
is:

player.position = ccp(player.contentSize.width / 2, winSize.height / 2);

slower than:

player.position = ccp(player.contentSize.width * 0.5, winSize.height * 0.5);

Answer 1

, . - , width height , , .

(, GCC) -, , , . , .

Answer 2

, , .

( , ) .

Answer 3

Multiplication to a certain extent can be performed in parallel, if you can use either the use of multiplication.