half

Half-precision floating-point

Version on this page:	0.3.1
LTS Haskell 21.22:	0.3.1@rev:1
Stackage Nightly 2023-12-03:	0.3.1@rev:1
Latest on Hackage:	0.3.1@rev:1

See all snapshots half appears in

BSD-3-Clause licensed by Edward A. Kmett

Maintained by Edward A. Kmett

This version can be pinned in stack with:half-0.3.1@sha256:5aabf5325762b2d6335b9e3f88602431af2b954e14b058bea3e93168a8e0eb53,2058

Module documentation for 0.3.1

Numeric
- Numeric.Half
  - Numeric.Half.Internal

Depends on 4 packages(full list with versions):

base, binary, deepseq, template-haskell

Used by 6 packages in lts-18.8(full list with versions):

cborg, clash-prelude, dhall, gl, OpenGLRaw, serialise

half

This package supplies half-precision floating point values w/ 1 bit of sign, 5 bits of exponent, 11 bits of mantissa trailing a leading 1 bit with proper underflow.

These arise commonly in GPU applications.

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

0.3.1 [2021-01-04]

Downgraded testing claims that NaNs will round-trip, as 32-bit GHCs aren’t fulfilling that promise. Now we merely claim that a NaN will return as a NaN.
Always provide NFData Half instance
Add Binary Half instance
Explicitly mark module as Trustworthy
Fix isInfinite
Add experimental support for GHCJS, add pure conversion functions.

0.3

Fixed bound in floatRange.
Fixed decodeFloat.
Added a Lift instance for Half for template-haskell support.

0.2.2.3

Avoid the new warnings for missing pattern synonym signatures on GHC 8

0.2.2.2

Fixed an issue with Storable that was causing crashing for some users.

0.2.2.1

Added support for older GHCs still. unsafeShiftR was only added in 7.4.

0.2.2

Fixed isInfinite.
Added support for older GHCs. On GHC < 7.8 the pattern synonyms are disabled.

0.2.1

Removed need for GeneralizedNewtypeDeriving and ScopedTypeVariables.

0.2.0.1

Fixed source repository location

0.2

Renamed toFloat to fromHalf for easier unqualified use.
Added a Read instance.

0.1.1

Added a CTYPE to the Half declaration so that it can be used with CApiFFI as an unsigned short.

0.1

Initial release