Changelog for the ghc-typelits-extra package

0.2.3 May 15th 2017

• Support GHC 8.2
• Max, Min, GCD, and LCM now have a commutativity property #9
• Reduce GCD 0 x to x #9
• Reduce GCD 1 x to 1 #9
• Reduce GCD x x to x #9
• Reduce LCM 0 x to 0 #9
• Reduce LCM 1 x to x #9
• Reduce LCM x x to x #9
• Reduce Max (0-1) 0 to 0 #10
• Reduce Min (0-1) 0 to 0 - 1 #10
• Fixes bugs:
  • Solver turns LCM into GCD #8
  • Solver turns Max into Min

0.2.2 January 15th 2017

• Reduce Min n (n+1) to n
• Reduce Max n (n+1) to n+1
• Reduce cases like 1 <=? Div 18 6 to True
• Add a type-level division that rounds up: type DivRU n d = Div (n + (d - 1)) d
• Add a type-level divMod : DivMod :: Nat -> Nat -> '(Nat, Nat)

0.2.1 September 29th 2016

• Reduce Max n n to n
• Reduce Min n n to n

0.2 August 19th 2016

• New type-level operations:
  • Max: type-level max
  • Min: type-level min
  • Div: type-level div
  • Mod: type-level mod
  • FLog: floor of logBase
  • Log: exact integer logBase (i.e. where floor (logBase b x) ~ ceiling (logBase b x) holds)
  • LCM: type-level lcm
• Fixes bugs:
  • CLog b 1 doesn't reduce to 0

0.1.3 July 19th 2016

• Fixes bugs:
  • Rounding error in CLog calculation

0.1.2 July 8th 2016

• Solve KnownNat constraints over CLog and GCD, i.e., KnownNat (CLog 2 4)

0.1.1 January 20th 2016

• Compile on GHC 8.0+

0.1 October 21st 2015

• Initial release