Noise function not working?

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#1

I’m working on a neat little noise function with things like octaves, lacunarity, etc, but I’m having an issue in that the math.noise function is not working properly. Here’s a snippet of the code:
(amplitude * math.noise(x * frequency, y * frequency, z * frequency))
Which is returning 0. Huh, I thought, and printed out a bunch of stuff. Frequency is 2, amplitude is also 2. I tried printing the x, y, and z values multiplied by the frequency without the noise, which all seem to be working fine. Example: -1024 208 -1024. So that isn’t the problem. However, when I print math.noise(x * frequency, y * frequency, z * frequency) with all the same settings, it constantly returns 0. What is going wrong here?

Edit: To help diagnose the problem, here’s what I printed:
print("POSITION:", x * frequency, y * frequency, z * frequency, "NOISE:", math.noise(x * frequency, y * frequency, z * frequency))

And here’s the output for one test:
POSITION: -256 0 -256 NOISE: 0

And noise is 0 for every test!

#2

This may have to become a bug report. Printing
math.noise(math.random(1, 50), math.random(1, 50), math.random(1, 50))
ALWAYS returns 0.

EDIT: I take that back, in a different script (math.noise(X,Y,Z)) works! I am thoroughly confused now.

#3

Ok, I’m VERY dumb. The documentation literally says that

If x, y and z are all integers, the return value will be 0.

Whoops.