Integer Math

Integer Math is a two-operand calculator for whole numbers, and its hidden superpower is that it tells you what it did. You pick an operation, feed it a and b, and it returns the numeric result plus an expression string like 8 × 4 = 32. That expression output is easy to underrate, but in a debugging session it's gold - you can wire it into a text display and see exactly what arithmetic ran, instead of squinting at a bare number wondering where it came from.

When do you actually need math in a diffusion graph? More often than you'd think. Seed transforms (seed + 1 for a variation series), step math, batch-size arithmetic, frame counts for video, dimension tricks - the patterns show up constantly once you start building anything that loops or varies. This node covers the six operations that matter for that: add, subtract, multiply, divide, modulo, and power.

The inputs that matter

operation is a dropdown with the six listed above. a and b are INTs in the signed 32-bit range, and both accept wired inputs - so you can chain arithmetic nodes together ((a + b) * c by feeding one result into the next a). The one behavior to know before you hit it by accident: divide is integer division. 7 ÷ 2 gives you 3, not 3.5. If you need decimals, this isn't the node - it's integer math, as advertised. And divide or modulo by zero raises an error rather than silently doing something weird, which is the right call for a debugging-friendly pack.

Outputs

• result - an INT, the numeric answer. Wire this into anything that takes an integer.
• expression - a STRING like 5 % 2 = 1. The debugging receipt. Plug it into a Show Text or note node and you can see every computation a workflow performed.

Installing it

ComfyBros installs like any custom node pack - ComfyUI Manager, search "ComfyBros", install, restart. Or:

cd ComfyUI/custom_nodes
git clone https://github.com/turnbros/ComfyBros

Then restart ComfyUI. The README references a requirements.txt that doesn't exist; real deps are in pyproject.toml (pillow, numpy, requests) and Manager handles them. Integer Math lives under ComfyBros/Math.

Gotchas

Integer division catching you off-guard is the main one. If you divide and the number comes back looking "wrong," check whether you wanted a float. Otherwise this node is about as predictable as it gets - pick an op, feed two integers, get an integer and a readable receipt.