Safe Haskell	None
Language	Haskell2010

Num.Fast

Synopsis

Documentation

class Floating a => Fast a where #

Minimal complete definition

Methods

flog :: a -> a #

Calculate an approximate log.

flog_lb :: a -> a #

flog_ub :: a -> a #

fexp :: a -> a #

Calculate an approximate exp.

fexp_lb :: a -> a #

fexp_ub :: a -> a #

fpow :: a -> a -> a #

Calculate an approximate pow.

fpow_lb :: a -> a -> a #

fpow_ub :: a -> a -> a #

Instances

Fast Double
Instance details Defined in Data.Approximate.Numerics Methods flog :: Double -> Double # flog_lb :: Double -> Double # flog_ub :: Double -> Double # fexp :: Double -> Double # fexp_lb :: Double -> Double # fexp_ub :: Double -> Double # fpow :: Double -> Double -> Double # fpow_lb :: Double -> Double -> Double # fpow_ub :: Double -> Double -> Double #
Fast Float
Instance details Defined in Data.Approximate.Numerics Methods flog :: Float -> Float # flog_lb :: Float -> Float # flog_ub :: Float -> Float # fexp :: Float -> Float # fexp_lb :: Float -> Float # fexp_ub :: Float -> Float # fpow :: Float -> Float -> Float # fpow_lb :: Float -> Float -> Float # fpow_ub :: Float -> Float -> Float #

blog :: Floating a => a -> a #

Borchardt’s Algorithm from “Dead Reckoning: Calculating without instruments”.

This is a remarkably bad approximate logarithm.

flog had better outperform it! It is provided merely for comparison.