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[ Source: haskell-ghc-typelits-natnormalise  ]

Package: libghc-ghc-typelits-natnormalise-prof (0.7.9-1 and others)

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GHC typechecker plugin for types of kind GHC.TypeLits.Nat; profiling libraries

A type checker plugin for GHC that can solve equalities and inequalities of types of kind @Nat@, where these types are either: 

  * Type-level naturals


  * Type variables


  * Applications of the arithmetic expressions (+,-,*,^).

It solves these equalities by normalising them to sort-of SOP (Sum-of-Products) form, and then perform a simple syntactic equality.

For example, this solver can prove the equality between:

(x + 2)^(y + 2)

and

4*x*(2 + x)^y + 4*(2 + x)^y + (2 + x)^y*x^2

Because the latter is actually the SOP normal form of the former.

To use the plugin, add the

OPTIONS_GHC -fplugin GHC.TypeLits.Normalise

Pragma to the header of your file.

This package provides a library for the Haskell programming language, compiled for profiling. See http://www.haskell.org/ for more information on Haskell.

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Architecture Version Package Size Installed Size Files
alpha (unofficial port) 0.7.9-1+b1 218.0 kB2,438.0 kB [list of files]
amd64 0.7.9-1+b2 146.6 kB1,264.0 kB [list of files]
arm64 0.7.9-1+b2 169.5 kB1,683.0 kB [list of files]
armel 0.7.9-1+b3 175.6 kB1,403.0 kB [list of files]
armhf 0.7.9-1+b3 172.8 kB1,374.0 kB [list of files]
hppa (unofficial port) 0.7.9-1+b4 285.6 kB2,375.0 kB [list of files]
i386 0.7.9-1+b2 231.4 kB1,575.0 kB [list of files]
ia64 (unofficial port) 0.7.9-1+b2 262.6 kB4,915.0 kB [list of files]
m68k (unofficial port) 0.7.7-1 218.6 kB1,738.0 kB [list of files]
mips64el 0.7.9-1+b2 211.6 kB2,391.0 kB [list of files]
ppc64 (unofficial port) 0.7.9-1+b2 183.8 kB2,415.0 kB [list of files]
ppc64el 0.7.9-1+b2 187.7 kB2,307.0 kB [list of files]
riscv64 0.7.9-1+b2 276.7 kB3,158.0 kB [list of files]
s390x 0.7.9-1+b2 197.2 kB2,434.0 kB [list of files]
sparc64 (unofficial port) 0.7.9-1+b1 253.5 kB3,832.0 kB [list of files]