Not

Outputs 1 to Result if A is less than 1.0, and 0 if it is 1.0 or greater.

• The test is A < 1.0f
• The node has numeric input fields for A and B, so you can type values in directly without connecting ports

B is not used in the test. The port only exists because this inherits the binary-operation base class; the implementation looks at A alone (moving B does not change the resulting value).

The true/false boundary is 1.0, not 0. Feeding in 0.5 is judged as false, so Not’s result is 1.