Simplified Common Lisp reference

Symbol class: Mathematics, Arithmetics, Logic and Comparisons

Syntax:

Symbol type: function

sqrtnumber => numeric value

Argument description:

number

SQRT function computes square root of number. Number may be integer, real or complex. See also ISQRT.

(sqrt 10) => 3.1622777
(sqrt 10.0) => 3.1622777
(sqrt 10.0d0) => 3.1622776601683795d0
(sqrt 4) => 2.0

(sqrt -4) => #C(0.0 2.0)
(sqrt #C(0.0 2.0)) => #C(1.0 1.0)