Simplified Common Lisp reference

Symbol class: Mathematics, Arithmetics, Logic and Comparisons

Syntax:

Symbol type: function

roundnumberdivisor => quotient (numeric value), remainder (numeric value)

Argument description:

number	number
divisor	non-zero real number, default is 1

FLOOR function returns two values, the first is result of dividing number by divisor and truncating toward nearest even integer. Second result remainder that satisfies equation: quotient * divisor + remainder = number.

(round 10) => 10, 0
(round 10.3 2) => 5, 0.3000002
(round 3/4) => 0, 3/4
(round 3/2) => 2, -1/2

(multiple-value-list (round 20 7)) => (3 -1)

Function index Full documentation for round (HyperSpec)