Efficient, general purpose pseudo-random number generation
This package provides the System.Random.MWC module, a Haskell library
for generating high-quality pseudo-random numbers in a space- and
time-efficient way.
This library is written and maintained by Bryan O’Sullivan,
[email protected].
Changes
Changes in 0.15.0.2
Doctests on 32-bit platforms are fixed. (#79)
Changes in 0.15.0.1
Bug in generation of Int/Word in both uniform and uniformR is fixed. (#75)
Changes in 0.15.0.0
withSystemRandomST and createSystemSeed are added.
withSystemRandom is deprecated.
random>=1.2 is dependency of mwc-random.
Instances for type classes StatefulGen & FrozenGen defined in random-1.2
are added for Gen.
Functions in System.Random.MWC.Distributions and
System.Random.MWC.CondensedTable now work with arbitrary StatefulGen
System.Random.MWC.uniformVector now works with arbitrary StatefulGen as
well and uses in-place initialization instead of generateM. It should be
faster for anything but IO and ST (those shoud remain same).
Changes in 0.14.0.0
Low level functions for acquiring random data for initialization
of PRGN state is moved to System.Random.MWC.SeedSource module
Ensure that carry is always correct when restoring PRNG state from
seed. Only affects users who create 258 element seed manually.
(#63, #65)
Changes in 0.13.6.0
tablePoisson now can handle λ>1923, see #59 for details.
That required intoduction of dependency on math-functions.
Changes in 0.13.5.0
logCategorical added
Changes in 0.13.4.0
withSystemRandom uses RtlGenRandom for seeding generator on windows
Changes in 0.13.3.1
primitive-0.6 compatibility
Changes in 0.13.3.0
Monadic variant of vector shuffle added: uniformShuffleM
Context on uniformShuffle loosened
Changes in 0.13.2.2
Fixed crash during gen. initialization on Windows when stderr
is not available (#36).
Changes in 0.13.2.0
Generators for beta, Bernoully, Dirichlet and categorical distributions
added.
Functions for generating random shuffles added.
Changes in 0.13.1.2
GHC 7.9 support
Changes in 0.13.1.1
Long standing performance problem in normal distribution fixed (#16)
Changes in 0.13.1.0
createSystemRandom added
Changes in 0.13.0.0
Workaround for GHC bug 8072 (bug 25). GHC 7.6 on 32-bit platrofms is
affected.
Generators for truncated exponential and geometric distributions
added.
Changes in 0.12.0.0
Fucntion asGenIO and asGenST added.
Generation of discrete random variates using condensed tables
methed. Tables for Poisson and binomial distributions are
provided.
