====== Description ======
The NOT node is a Boolean NOT.  It inverts the logical value of its child-node from true to false or false to true.  Because NetWeaver uses fuzzy math the NOT node also inverts fuzzy trueness values.

====== Constraints ======
  * Minimum number of child-nodes: 0
  * Maximum number of child-nodes: 1
  * Valid input range: -1 to +1 (false to true)

====== Calculus ======

Because NetWeaver uses a range of -1 to +1 to represent false to true, the NOT node's value is simply calculated by flipping the sign of its child-node.

value = -value<sub>1</sub>