Copyright | (c) Ashley Yakeley 2005 2006 2009 |
---|---|
License | BSD-style (see the file libraries/base/LICENSE) |
Maintainer | Ashley Yakeley <ashley@semantic.org> |
Stability | experimental |
Portability | portable |
Safe Haskell | Trustworthy |
Language | Haskell2010 |
This module defines a "Fixed" type for fixed-precision arithmetic. The parameter to Fixed is any type that's an instance of HasResolution. HasResolution has a single method that gives the resolution of the Fixed type.
This module also contains generalisations of div, mod, and divmod to work with any Real instance.
Synopsis
- div' :: (Real a, Integral b) => a -> a -> b
- mod' :: Real a => a -> a -> a
- divMod' :: (Real a, Integral b) => a -> a -> (b, a)
- newtype Fixed a = MkFixed Integer
- class HasResolution a where
- resolution :: p a -> Integer
- showFixed :: HasResolution a => Bool -> Fixed a -> String
- data E0
- type Uni = Fixed E0
- data E1
- type Deci = Fixed E1
- data E2
- type Centi = Fixed E2
- data E3
- type Milli = Fixed E3
- data E6
- type Micro = Fixed E6
- data E9
- type Nano = Fixed E9
- data E12
- type Pico = Fixed E12
Documentation
divMod' :: (Real a, Integral b) => a -> a -> (b, a) Source #
generalisation of divMod
to any instance of Real
The type parameter should be an instance of HasResolution
.
Instances
Enum (Fixed a) Source # | Since: 2.1 |
Defined in Data.Fixed succ :: Fixed a -> Fixed a Source # pred :: Fixed a -> Fixed a Source # toEnum :: Int -> Fixed a Source # fromEnum :: Fixed a -> Int Source # enumFrom :: Fixed a -> [Fixed a] Source # enumFromThen :: Fixed a -> Fixed a -> [Fixed a] Source # enumFromTo :: Fixed a -> Fixed a -> [Fixed a] Source # enumFromThenTo :: Fixed a -> Fixed a -> Fixed a -> [Fixed a] Source # | |
Eq (Fixed a) Source # | Since: 2.1 |
HasResolution a => Fractional (Fixed a) Source # | Since: 2.1 |
Typeable a => Data (Fixed a) Source # | Since: 4.1.0.0 |
Defined in Data.Fixed gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Fixed a -> c (Fixed a) Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Fixed a) Source # toConstr :: Fixed a -> Constr Source # dataTypeOf :: Fixed a -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Fixed a)) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Fixed a)) Source # gmapT :: (forall b. Data b => b -> b) -> Fixed a -> Fixed a Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Fixed a -> r Source # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Fixed a -> r Source # gmapQ :: (forall d. Data d => d -> u) -> Fixed a -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> Fixed a -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Fixed a -> m (Fixed a) Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Fixed a -> m (Fixed a) Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Fixed a -> m (Fixed a) Source # | |
HasResolution a => Num (Fixed a) Source # | Since: 2.1 |
Defined in Data.Fixed | |
Ord (Fixed a) Source # | Since: 2.1 |
HasResolution a => Read (Fixed a) Source # | Since: 4.3.0.0 |
HasResolution a => Real (Fixed a) Source # | Since: 2.1 |
Defined in Data.Fixed toRational :: Fixed a -> Rational Source # | |
HasResolution a => RealFrac (Fixed a) Source # | Since: 2.1 |
HasResolution a => Show (Fixed a) Source # | Since: 2.1 |
class HasResolution a where Source #
resolution :: p a -> Integer Source #
Instances
HasResolution E12 Source # | Since: 2.1 |
Defined in Data.Fixed resolution :: p E12 -> Integer Source # | |
HasResolution E9 Source # | Since: 4.1.0.0 |
Defined in Data.Fixed resolution :: p E9 -> Integer Source # | |
HasResolution E6 Source # | Since: 2.1 |
Defined in Data.Fixed resolution :: p E6 -> Integer Source # | |
HasResolution E3 Source # | Since: 4.1.0.0 |
Defined in Data.Fixed resolution :: p E3 -> Integer Source # | |
HasResolution E2 Source # | Since: 4.1.0.0 |
Defined in Data.Fixed resolution :: p E2 -> Integer Source # | |
HasResolution E1 Source # | Since: 4.1.0.0 |
Defined in Data.Fixed resolution :: p E1 -> Integer Source # | |
HasResolution E0 Source # | Since: 4.1.0.0 |
Defined in Data.Fixed resolution :: p E0 -> Integer Source # |
showFixed :: HasResolution a => Bool -> Fixed a -> String Source #
First arg is whether to chop off trailing zeros
Instances
HasResolution E0 Source # | Since: 4.1.0.0 |
Defined in Data.Fixed resolution :: p E0 -> Integer Source # |
Instances
HasResolution E1 Source # | Since: 4.1.0.0 |
Defined in Data.Fixed resolution :: p E1 -> Integer Source # |
Instances
HasResolution E2 Source # | Since: 4.1.0.0 |
Defined in Data.Fixed resolution :: p E2 -> Integer Source # |
Instances
HasResolution E3 Source # | Since: 4.1.0.0 |
Defined in Data.Fixed resolution :: p E3 -> Integer Source # |
Instances
HasResolution E6 Source # | Since: 2.1 |
Defined in Data.Fixed resolution :: p E6 -> Integer Source # |
Instances
HasResolution E9 Source # | Since: 4.1.0.0 |
Defined in Data.Fixed resolution :: p E9 -> Integer Source # |
Instances
HasResolution E12 Source # | Since: 2.1 |
Defined in Data.Fixed resolution :: p E12 -> Integer Source # |