log-domain

Log-domain arithmetic

Version on this page:	0.9.3
LTS Haskell 21.13:	0.13.2@rev:3
Stackage Nightly 2023-09-27:	0.13.2@rev:3
Latest on Hackage:	0.13.2@rev:3

See all snapshots log-domain appears in

BSD-3-Clause licensed by Edward A. Kmett

Maintained by Edward A. Kmett

This version can be pinned in stack with:log-domain-0.9.3@sha256:043f318490953896c9ae7eeef75f229527affb81d3f41f7a18aaf9f3ad8ed980,2343

Module documentation for 0.9.3

Numeric
- Numeric.Log

Depends on 14 packages(full list with versions):

base, binary, bytes, cereal, comonad, deepseq, distributive, generic-deriving, hashable, hashable-extras, safecopy, semigroupoids, semigroups, vector

Used by 2 packages in lts-0.7(full list with versions):

approximate, compensated

log

What rolls down stairs alone or in pairs
Rolls over your neighbor’s dog?
What’s great for a snack and fits on your back?
It’s Log, Log, Log!

It’s Log, Log, it’s big, it’s heavy, it’s wood.
It’s Log, Log, it’s better than bad, it’s good!
Everyone wants a log! You’re gonna love it, Log!
Come on and get your log! Everyone needs a Log!”

– Ren & Stimpy, The Log Song

This package provides log-domain floats, doubles and complex numbers.

Contact Information

Contributions and bug reports are welcome!

Please feel free to contact me through github or on the #haskell IRC channel on irc.freenode.net.

-Edward Kmett

Changes

0.9.3

Fixed subtraction again. For real this time.

0.9.2.1

Support generic-deriving 1.7

0.9.2

Fixed subtraction better.

0.9.1

Fixed subtraction.

0.8

Updated to comonad and semigroupoids 4.

0.7.2

Dependency bump to allow comonad and semigroupoids 4.0

0.7.1

Marked Numeric.Log Trustworthy.

0.6

Renamed the data constructor to Exp and the field accessor to ln per issue #1.

0.5.0.1

Wider bounds for generic-deriving so we can build with GHC HEAD.

0.5

Switched the Hashable1 instance to use the new, lighter, hashable-extras

0.4

instance Hashable1 Log

0.3.0.1

Wider binary version bound

0.3

Added support for cereal.

0.2

Added an Enum instance.
Added sum to calculate using the log-sum-exp trick.

0.1.0.1

Minor packaging changes

0.1

Renamed from log to log-domain due to internal hackage issues rendering that name inaccessible.
Ported Numeric.Log from analytics at the request of @bgamari