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• Set

Cardinality

The number of elements in a set.

Signature

(cardinality set) → *

Arguments

set — Guard (setp set).

Time complexity: O(n).

Definitions and Theorems

Function: cardinality

(defun cardinality (set)
  (declare (xargs :guard (setp set)))
  (declare (xargs :type-prescription (natp (cardinality set))))
  (let ((__function__ 'cardinality))
    (declare (ignorable __function__))
    (tree-nodes-count (sfix set))))