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Within LTS Haskell 24.40 (ghc-9.10.3)

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1. uniformR :: (RandomGen g, UniformRange a) => (a, a) -> g -> (a, g)

   random	System.Random

   Generates a value uniformly distributed over the provided range, which is interpreted as inclusive in the lower and upper bound.

   • uniformR (1 :: Int, 4 :: Int) generates values uniformly from the set <math>
   • uniformR (1 :: Float, 4 :: Float) generates values uniformly from the set <math>
   The following law should hold to make the function always defined:

   uniformR (a, b) = uniformR (b, a)
   

   This is a pure version of uniformRM.

   Examples

   >>> import System.Random
   
   >>> let pureGen = mkStdGen 137
   
   >>> uniformR (1 :: Int, 4 :: Int) pureGen
   (4,StdGen {unStdGen = SMGen 11285859549637045894 7641485672361121627})
   

2. class Uniform a

   random	System.Random.Stateful

   The class of types for which a uniformly distributed value can be drawn from all possible values of the type.

3. class UniformRange a

   random	System.Random.Stateful

   The class of types for which a uniformly distributed value can be drawn from a range.

4. uniformByteStringM :: StatefulGen g m => Int -> g -> m ByteString

   random	System.Random.Stateful

   Generates a pseudo-random ByteString of the specified size.

5. uniformDouble01M :: StatefulGen g m => g -> m Double

   random	System.Random.Stateful

   Generates uniformly distributed Double in the range <math>. Numbers are generated by generating uniform Word64 and dividing it by <math>. It's used to implement UniformRange instance for Double.

6. uniformDoublePositive01M :: StatefulGen g m => g -> m Double

   random	System.Random.Stateful

   Generates uniformly distributed Double in the range <math>. Number is generated as <math>. Constant is 1/2 of smallest nonzero value which could be generated by uniformDouble01M.

7. uniformEnumM :: (Enum a, Bounded a, StatefulGen g m) => g -> m a

   random	System.Random.Stateful

   Generates uniformly distributed Enum. One can use it to define a Uniform instance:

   data Colors = Red | Green | Blue deriving (Enum, Bounded)
   instance Uniform Colors where uniformM = uniformEnumM
   

8. uniformEnumRM :: (Enum a, StatefulGen g m) => (a, a) -> g -> m a

   random	System.Random.Stateful

   Generates uniformly distributed Enum in the given range. One can use it to define a UniformRange instance:

   data Colors = Red | Green | Blue deriving (Enum)
   instance UniformRange Colors where
   uniformRM = uniformEnumRM
   inInRange (lo, hi) x = isInRange (fromEnum lo, fromEnum hi) (fromEnum x)
   

9. uniformFloat01M :: StatefulGen g m => g -> m Float

   random	System.Random.Stateful

   Generates uniformly distributed Float in the range <math>. Numbers are generated by generating uniform Word32 and dividing it by <math>. It's used to implement UniformRange instance for Float.

10. uniformFloatPositive01M :: StatefulGen g m => g -> m Float

    random	System.Random.Stateful

    Generates uniformly distributed Float in the range <math>. Number is generated as <math>. Constant is 1/2 of smallest nonzero value which could be generated by uniformFloat01M.

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