(equal x y) is equal to t or nil, according to
whether or not x and y are the same value.
For a discussion of the various idioms for testing against 0, See zero-test-idioms.
- Test equality (of two numbers, symbols, or characters)
- Equality of symbols
- Test equality of two numbers
- The guard for the function eql
- (hons-equal x y) is a recursive equality check that optimizes
when parts of its arguments are normed.
- Recognizer for a true list of objects each suitable for eql