sqrt ( x -- y )
Factor handbook » The language » Numbers » Mathematical functions » Powers and logarithms

Prev:	sq ( x -- y )
Next:	e^ ( x -- e^x )

Vocabulary
math.functions

Inputs

x

a number

Outputs

y

a number

Word description
Square root function.

Definition

IN: math.functions

GENERIC: sqrt ( x -- y ) foldable flushable

Methods

USING: kernel math math.functions ;

M: complex sqrt >polar [ sqrt ] [ 2.0 / ] bi* polar> ; inline


USING: kernel math math.functions math.libm ;

M: real sqrt
    >float dup 0.0 <
    [ neg fsqrt [ 0.0 ] dip rect> ] [ fsqrt ] if ; inline