M Int Abs

Sometimes you don't care whether a value is over or under - you care how far off it is. M Int Abs takes one integer x and returns its absolute value, abs, as a plain INT. The sign is stripped; the magnitude survives.

It's one of the pack's unary nodes - one input instead of two - and the uses all circle around "distance, not direction":

• Error and delta math. The difference between two values, made unsigned. If you have a target and a current value, abs(current - target) is "how far off am I" regardless of which direction you missed. That's a clean gate condition for "close enough yet?"
• Magnitude checks. A strength or offset that can legitimately be negative but must never exceed a magnitude - abs first, compare second, and the comparison is meaningful in both directions.
• Normalizing before logic. Turning a signed value into a non-negative one so downstream math (like the pack's min/max or comparisons) behaves predictably.

Mechanically it's Python's abs(x). Input range is signed 32-bit INT, default 0, and the classic edge case is worth knowing: abs of the minimum 32-bit value would be outside the range, but with real workflow numbers you'll never approach that.

It ships in ComfyUiNodes (repo Madlumi/ComfyUiNodes, author "Madanie"), a small personal pack of integer math, string helpers, and workflow-glue nodes. Install via ComfyUI Manager - search "ComfyUiNodes" - or:

cd ComfyUI/custom_nodes
git clone https://github.com/Madlumi/ComfyUiNodes

Restart ComfyUI afterward. No pip requirements or model downloads. It's under Add Node → mnodes → int.

Honest verdict: abs is a "when you need it, you really need it" node. If your workflows compute differences and then compare them, this is the missing piece between the subtraction and the branch.