Feldspar.FixedPoint

Documentation

data Fix a

Abstract real number type with exponent and mantissa

Constructors

Fix

Fields

exponent :: Data IntN

mantissa :: Data a

Instances

Type a => Eq (Fix a)

(Num (Fix a), Integral a, Bits a, Real a) => Fractional (Fix a)

(Integral a, Bits a, Real a) => Num (Fix a)

Type a => Show (Fix a)

Type a => Syntactic (Fix a)

(Syntactic (Fix a), ~ (* -> *) (Domain (Fix a)) FeldDomainAll, Type (Internal (Fix a)), Type a) => Syntax (Fix a)

(Syntax (Dynamic (Fix a)), Bits a) => Splittable (Fix a)

(Splittable (Fix a), Bits a) => Fixable (Fix a)

class Splittable t => Fixable t where

Operations to get and set exponent

Methods

fix :: Data IntN -> t -> t

getExp :: t -> Data IntN

Instances

Fixable (Data Float)

(Splittable (Fix a), Bits a) => Fixable (Fix a)

freezeFix :: Type a => Fix a -> (Data IntN, Data a)

Converts an abstract real number to a pair of exponent and mantissa

freezeFix' :: Bits a => IntN -> Fix a -> Data a

Converts an abstract real number to fixed point integer with given exponent

unfreezeFix :: Type a => (Data IntN, Data a) -> Fix a

Converts a pair of exponent and mantissa to an abstract real number

unfreezeFix' :: IntN -> Data a -> Fix a

Converts a fixed point integer with given exponent to an abstract real number

(?!) :: forall a. (Syntax a, Splittable a) => Data Bool -> (a, a) -> a

A version of branching for fixed point algorithms

fixFold :: forall a b. Splittable a => (a -> b -> a) -> a -> Vector b -> a

A version of vector fold for fixed point algorithms