| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
Sound.Sc3.Common.Random
Description
Linear congruential generator and related utilities. Ordinarily use System.Random.
Synopsis
- lcg :: Num t => (t -> t) -> t -> t -> t -> t
- lcgWord64Knuth :: Word64 -> Word64
- lcgInt32Glibc :: Int32 -> Int32
- cpuTimeSeedWord64 :: IO Word64
- cpuTimeSeedInt32 :: IO Int32
- lcgWord64KnuthCpuTime :: IO [Word64]
- word64ToUnitDouble :: Word64 -> Double
- lcgDoubleKnuthCpuTime :: IO [Double]
Documentation
lcg :: Num t => (t -> t) -> t -> t -> t -> t Source #
Linear congruential generator given modulo function for type.
See http://en.wikipedia.org/wiki/Linear_congruential_generator for possible parameters.
lcgWord64Knuth :: Word64 -> Word64 Source #
lcg 6364136223846793005 1442695040888963407, so in (0, 18446744073709551615)
take 5 (iterate lcgWord64Knuth 147092873413) (maxBound :: Word64) == (2 ^ 64 - 1)
lcgInt32Glibc :: Int32 -> Int32 Source #
lcg 1103515245 12345, so in (-2147483648, 2147483647)
take 5 (iterate lcgInt32Glibc 873413) (minBound :: Int32,maxBound :: Int32) == (-2147483648, 2147483647)
cpuTimeSeedWord64 :: IO Word64 Source #
Run getCPUTime and convert to Word64
cpuTimeSeedInt32 :: IO Int32 Source #
Run getCPUTime and convert to Int32
lcgWord64KnuthCpuTime :: IO [Word64] Source #
Iterate lcgWord64Knuth using cpuTimeSeedWord64.
word64ToUnitDouble :: Word64 -> Double Source #
Convert Word64 to Double in range (0, 1). Shifts input right 11 places (ie. discards 11 least significant bits) then divide by 2^53.
lcgDoubleKnuthCpuTime :: IO [Double] Source #
word64ToUnitDouble of lcgWord64KnuthCpuTime
x <- fmap (take 256) lcgDoubleKnuthCpuTime Sound.Sc3.Plot.plot_p1_ln [x]