perl6/doc/lib/Real

(title)  role Real

    role Real does Numeric { ... }

Common role for non-Complex numbers.

Methods

(head2)  Rat

    method Rat(Real:D: Real $epsilon = 1e-6)

Converts the number to a Rat with the precision $epsilon .

(head2)  rand

    sub term:<rand> returns Num:D
    method rand(Real:D:) returns Real:D

Returns a pseudo-random number between zero and the number. The term form returns a pseudo-random Num between 0e0 and 1e0.

(head2)  sign

    method sign(Real:D:)

Returns -1 if the number is negative, 0 if it is zero and 1 otherwise.

(head2)  round

    method round(Real:D: $scale = 1)

Rounds the number to scale $scale . If $scale is 1, rounds to an integer. If scale is 0.1 , rounds to one digit after the comma etc.

(head2)  floor

    method floor(Real:D) returns Int:D

Return the largest integer not greater than the number.

(head2)  ceiling

    method ceiling(Real:D) returns Int:D

Returns the smallest integer not less than the number.

(head2)  truncate

    method truncate(Real:D) returns Int:D

Rounds the number towards zero.

(head2)  base

    method base(Real:D: Int:D $base where 2..36) returns Str:D

Converts the number to a string, using $base as base. For $base larger than ten, capital latin letters are used.

    255.base(16)    # 'FF'