Comparison Operation¶
Performs common numeric comparisons and range clamping between two float values. It returns a numeric result (e.g., min/max/clamped value or the left operand when a comparison is true) and a boolean indicating the outcome of comparison-type operations. Non-comparison operations set the boolean to false.
Usage¶
Use this node when you need to compare two numbers (e.g., thresholds, gating, branching) or constrain a value within bounds. Typical workflows include selecting the smaller/larger of two values, clamping a value to a range, or testing conditions like equal/greater/less to drive logic downstream via the boolean output.
Inputs¶
| Field | Required | Type | Description | Example |
|---|---|---|---|---|
| a | True | FLOAT | First numeric value to compare or clamp. For comparison operations, this is the left-hand operand. | 5.0 |
| b | True | FLOAT | Second numeric value for comparison against 'a'. Ignored when operation is 'clamp'. | 3.0 |
| operation | True | ENUM | Selects the operation to perform. Options: min, max, clamp, equal, greater, less, greater_equal, less_equal. | greater |
| clamp_min | True | FLOAT | Lower bound used only when operation is 'clamp'. | 0.0 |
| clamp_max | True | FLOAT | Upper bound used only when operation is 'clamp'. | 1.0 |
Outputs¶
| Field | Type | Description | Example |
|---|---|---|---|
| result | FLOAT | Numeric outcome. For min/max: the min or max of a and b. For clamp: 'a' clamped to [clamp_min, clamp_max]. For comparisons (equal/greater/less/greater_equal/less_equal): returns 'a' if the comparison is true, otherwise 0.0. | 5.0 |
| comparison_result | BOOLEAN | Boolean outcome of comparison-type operations. True if the comparison condition is met. For non-comparison operations (min, max, clamp), this is always False. | true |
Important Notes¶
- For 'equal', floating-point equality uses a small tolerance (~1e-9) to account for precision errors.
- When operation is 'clamp', the 'b' input is ignored; only 'a', 'clamp_min', and 'clamp_max' are used.
- Ensure clamp_min is less than or equal to clamp_max to get meaningful clamping behavior.
- Non-comparison operations (min, max, clamp) always output comparison_result = False.
- All numeric inputs accept large ranges (approximately -1e10 to 1e10) and step granularity around 0.001.
Troubleshooting¶
- Unexpected False on 'equal': Floating-point precision may prevent exact equality; adjust inputs or account for the 1e-9 tolerance.
- Clamp not behaving as expected: Verify clamp_min <= clamp_max and confirm that the selected operation is 'clamp'.
- comparison_result is always False: This is expected for 'min', 'max', and 'clamp'; use comparison operations to drive booleans.
- Result is 0.0 on a comparison: This means the condition evaluated to False; check 'a' and 'b' values and the chosen operator.