The hmpfr package

[Tags:bsd3, library]

Haskell binding to the MPFR library. This version is compatible with MPFR 2.4.* and later and will not work with previous releases of the MPFR library.

Since MPFR uses GMP, this library features infrequent but serious errors with a ghc that has been compiled with the default integer-gmp. When using ghc, it is recommended to use one compiled with a modified integer-gmp, as described at

or with integer-simple, as described at

There is a hope that at some point future versions of ghc will not need any modification for hmpfr to work with them correctly.

The library includes both a pure and a mutable interface. The mutable interface should have a lot less overhead than the pure one.

Some simple examples of usage can be found in demo/Demo.hs.

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Versions 0.1, 0.1.1, 0.1.2, 0.1.3, 0.2, 0.2.1, 0.3, 0.3.1, 0.3.2, 0.3.3,,,,,, 0.4.0,,, 0.4.1, 0.4.2,
Change log ChangeLog
Dependencies base (>3 && <5), integer-gmp, integer-simple [details]
License BSD3
Author Aleš Bizjak, Michal Konečný
Maintainer Michal Konečný <>
Stability experimental
Category Data, Math
Home page
Source repository head: hg clone
this: hg clone -u release-
Uploaded Mon Feb 13 10:05:50 UTC 2012 by MichalKonecny
Distributions LTSHaskell:, NixOS:, Stackage:, Tumbleweed:
Downloads 3534 total (50 in the last 30 days)
1 []
Status Docs uploaded by user
Build status unknown [no reports yet]




use-integer-simpleUse this when compiling using a ghc that uses integer-simple instead of integer-gmp.DisabledAutomatic

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info


Maintainer's Corner

For package maintainers and hackage trustees

Readme for hmpfr

Readme for hmpfr-

Haskell MPFR binding.

If you find bugs or have any questions please write to <>.