How to rotate a character without using a conditional operator?

Question

Algorithms

Is it possible to rotate a sprite in the direction of movement not through a conditional operator, but through mathematics?

I thought of the option below, but it doesn't work.

transform.eulerAngles = new Vector3(0, (transform.rotation.y + 180f) % 360f, 0);

PS Am I right that using math is cheaper than using operators? =.=

Answer 1

Am I right that using math is cheaper than using operators? =.=

A very controversial point, but conditional operators are extremely cheap.
If we're not talking about shaders.
And premature optimization is an extreme evil.