e^-1 ( x -- e^x-1 )

Vocabulary

math.functions

Inputs

x

an object

Outputs

e^x-1

an object

Definition

IN: math.functions

GENERIC: e^-1 ( x -- e^x-1 )

Methods

USING: kernel math math.functions ;

M: float e^-1
    dup abs 0.7 < [
        dup e^ dup 1.0 =
        [ drop ] [ [ 1.0 - * ] [ log / ] bi ] if
    ] [ e^ 1.0 - ] if ; inline


USING: math math.functions ;

M: real e^-1 >float e^-1 ; inline