Comparison Operation¶
Performs numeric comparisons and related utilities between two numbers. It can compute min/max, clamp a value to a range, or evaluate relational checks (equal, greater/less and their inclusive variants). Outputs both a numeric result and a boolean flag indicating the outcome for comparison operations.
Usage¶
Use this node when you need to compare two numeric values or constrain a value within bounds as part of a workflow. Typical patterns include branching logic based on greater/less checks, gating downstream operations using the boolean output, or normalizing values via clamping before further processing.
Inputs¶
| Field | Required | Type | Description | Example |
|---|---|---|---|---|
| a | True | FLOAT | First numeric input to compare or clamp. | 3.5 |
| b | True | FLOAT | Second numeric input used for comparisons or as the counterpart for min/max operations. | 5.0 |
| operation | True | STRING | Operation to perform. One of: min, max, clamp, equal, greater, less, greater_equal, less_equal. | greater_equal |
| clamp_min | True | FLOAT | Lower bound used when operation is clamp. Ignored for other operations. | 0.0 |
| clamp_max | True | FLOAT | Upper bound used when operation is clamp. Ignored for other operations. | 1.0 |
Outputs¶
| Field | Type | Description | Example |
|---|---|---|---|
| result | FLOAT | Numeric result of the selected operation. For min/max: the min or max of a and b. For clamp: a constrained to [clamp_min, clamp_max]. For comparisons: returns a if the comparison is true, otherwise 0.0. | 3.5 |
| comparison_result | BOOLEAN | Boolean outcome for comparison operations: true if the relation holds, false otherwise. For min, max, and clamp, this is always false. | True |
Important Notes¶
- Min, max, and clamp always output comparison_result as false; use comparison operations if you need a boolean for branching.
- Equal uses a small tolerance for float comparison (approximately 1e-9), which helps avoid false negatives from floating-point precision.
- Clamp uses max(clamp_min, min(a, clamp_max)); ensure clamp_min is less than or equal to clamp_max for meaningful results.
- Input ranges are from approximately -1e10 to 1e10 with step granularity around 0.001.
Troubleshooting¶
- Unexpected clamp result: Verify clamp_min <= clamp_max; reversed bounds can produce a value outside the intended range.
- Equality check failing due to precision: If values are nearly equal but comparison_result is false, consider numerical precision and that the tolerance is about 1e-9.
- comparison_result is always false: This is expected for min, max, and clamp. Use greater/less/equal variants if you need a boolean.
- result is 0.0 for a true comparison expected: For comparison operations, result returns a only when the comparison is true; if you expected b or another value, adjust downstream logic accordingly.