Factorio Forums

Posted: **Wed Aug 26, 2026 4:31 pm**

I tried to use a 0.01 multiplier in a constant combinator group.

Expected outcome:
100 * 0.01 = 1
200 * 0.01 = 2
2000 * 0.01 = 20

What happened instead:
100 * 0.01 = 0
200 * 0.01 = 1
2000 * 0.01 = 19

I think it's because float values, but a 0.1 multiplier works fine here:
100 * 0.1 = 10
200 * 0.1 = 20
2000 * 0.1 = 200

example blueprint

Might be related to viewtopic.php?t=134202

Posted: **Thu Aug 27, 2026 5:33 pm**

The current logic does floor(value * multiplier). It could change it, but I don't see a particular reason to change it to round or ceil.

Multiplying things by such tiny multipliers just asks for issues like this. Its original purpose was positive values and the fact it works at all with values as small as 0.01 seems extra to me. It just generates bug reports like this.

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[2.1.16] Constant combinator multiplier unexpected float output

[2.1.16] Constant combinator multiplier unexpected float output

Re: [2.1.16] Constant combinator multiplier unexpected float output