How do I calculate an atan of a value less than 1?

Questions & Answers
1

Unsing Unity 2021.3.9f1

My code:

print("Atan 1/3: "+MathF.Atan(1/3));

My Result:

204064-zwischenablage02.jpg

Same thing happens for 1/2.

Whats going on here and how do I get correct results?

BTW: No change in result if I use Mathf or MathF, neither can do it.
Restarting Unity, which has fixed similier miscalculation errors in the past did not do the trick this time.

Thanks

2

The problem isn’t the Atan but that 1/3 is zero. That’s because 1 and 3 are both integers so the division operator performs integer division (rounding towards zero). You can mark a number literal as a float (32-bit floating point number) with the suffix f: 

Mathf.Atan(1f / 3f)