-------------------------------------------- -- logfloat 0.10, 0.11 -------------------------------------------- This package provides a type for storing numbers in the log-domain, primarily useful for preventing underflow when multiplying many probabilities as in HMMs and other probabilistic models. The package also provides modules for dealing with floating numbers correctly. -------------------------------------------- -- Compatibility / Portability -------------------------------------------- The package is compatible with Hugs (September 2006) and GHC (6.8, 6.10). For anyone still using GHC 6.6, the code should still work if you replace LANGUAGE pragma by equivalent OPTIONS_GHC pragma. The package is not compatible with nhc98 and Yhc because Data.Number.RealToFrac uses MPTCs. The other modules should be compatible. -------------------------------------------- -- Changes for 0.11 (since 0.10) -------------------------------------------- * Moved the RealToFrac class from Data.Number.Transfinite to Data.Number.RealToFrac. This breaks backwards compatibility if you depended directly on that module for the class. If you imported the class from Data.Number.LogFloat then you're still fine. -------------------------------------------- -- Changes for 0.10 (since 0.9.1) -------------------------------------------- * Hugs' Prelude definitions of isInfinite and isNaN for Float and Double are buggy. The new Hugs.RealFloat module provides correct implementations (defaulting to the Prelude definition for non-Hugs compilers). * The PartialOrd and Transfinite instances for Double and Float have been updated to use these corrected functions. * Added maxPO and minPO to PartialOrd and added comparingPO to Data.Number.PartialOrd. * Minor changes to circumvent bugs in Hackage's new version of Haddock. You should be able to see all the documentation now. * (0.9.1.1) Minor changes to compile cleanly on GHC 6.10 -------------------------------------------- -- Links -------------------------------------------- Homepage: http://code.haskell.org/~wren/ Hackage: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/logfloat Darcs: http://code.haskell.org/~wren/logfloat/ Haddock (Darcs version): http://code.haskell.org/~wren/logfloat/dist/doc/html/logfloat/ code.haskell.org is down at present so the Darcs repo is lagging Hackage. This will be corrected soon. -- Live well, ~wren