Exercise 1.6.8
Numeric Constants
In the REPL
pi
(= pi pi)
(eq pi pi)
(eql pi pi)
(equal pi pi)
(equalp pi pi)
What You Should See
The constant pi
is defined for you.
* pi
3.141592653589793d0
It's always equal to itself, obviously, but its exact representation depends on the float precision of a particular Lisp implementation.
* (= pi pi)
T
* (eq pi pi)
T
* (eql pi pi)
T
* (equal pi pi)
T
* (equalp pi pi)
T