mathFunctionNode.md

Math Function (mathFunctionNode)

Category: Math & Compare

Intended behavior

Applies a math function (abs, round, sqrt, pow, min, max, mod…) to its inputs.

Inputs

ID	Label	Type	Unwired default
a	A	number	0
b	B	number	0
enabled	Enabled	boolean	true

Outputs

ID	Label	Type	Default
out	Result	number	undefined

Configuration defaults

{
  "op": "abs"
}

Observed frontend behavior

This calls the production passive computation with the declared input/config defaults. Cached state, trigger execution and project wiring are separate.

{
  "kind": "passive-default-probe",
  "outputs": {
    "out": 0
  }
}

Observed backend behavior

Offline production passive computation with the same declared defaults; no device or model service is invoked.

{
  "kind": "passive-default-probe",
  "outputs": {
    "out": 0
  }
}

Current frontend implementation

Extracted production branches; helper calls and project execution context are defined in the referenced modules.

src/lib/execution-helpers.ts:189

case "mathFunctionNode": {
      const a = Number(inputs.a ?? 0);
      const b = Number(inputs.b ?? 0);
      const op = config.op ?? "abs";
      const fns: Record<string, () => number> = {
        abs: () => Math.abs(a),
        round: () => Math.round(a),
        floor: () => Math.floor(a),
        ceil: () => Math.ceil(a),
        sqrt: () => Math.sqrt(a),
        pow: () => Math.pow(a, b),
        min: () => Math.min(a, b),
        max: () => Math.max(a, b),
        mod: () => (b === 0 ? 0 : ((a % b) + b) % b),
      };
      outputs.out = (fns[op] ?? fns.abs)();
      break;
    }

Implementation references

• src/lib/execution-helpers.ts:74
• backend/engine/passive.py:167

Verification limits

• Default passive probe is an observation, not proof of all configurations, trigger behavior, or correctness. See ../NODE_RUNTIME_AUDIT.md and ../AUDIT_VALIDATION.md for test evidence.
• Enabled=false uses the runtime bypass mapping; bypass output can differ from the normal declared output type.

Source fingerprint: 7e9d192bd3a559a7c50253919867601ef02c311d61e859f7afb4cadcfa508430. Rebuild with npm run docs:index.