name:               scientific
version:            0.3.7.0
x-revision:         1
synopsis:           Numbers represented using scientific notation
description:
  "Data.Scientific" provides the number type 'Scientific'. Scientific numbers are
  arbitrary precision and space efficient. They are represented using
  <http://en.wikipedia.org/wiki/Scientific_notation scientific notation>.
  The implementation uses a coefficient @c :: 'Integer'@ and a base-10 exponent
  @e :: 'Int'@. A scientific number corresponds to the
  'Fractional' number: @'fromInteger' c * 10 '^^' e@.
  .
  Note that since we're using an 'Int' to represent the exponent these numbers
  aren't truly arbitrary precision. I intend to change the type of the exponent
  to 'Integer' in a future release.
  .
  The main application of 'Scientific' is to be used as the target of parsing
  arbitrary precision numbers coming from an untrusted source. The advantages
  over using 'Rational' for this are that:
  .
  * A 'Scientific' is more efficient to construct. Rational numbers need to be
  constructed using '%' which has to compute the 'gcd' of the 'numerator' and
  'denominator'.
  .
  * 'Scientific' is safe against numbers with huge exponents. For example:
  @1e1000000000 :: 'Rational'@ will fill up all space and crash your
  program. Scientific works as expected:
  .
  >>> read "1e1000000000" :: Scientific
  1.0e1000000000
  .
  * Also, the space usage of converting scientific numbers with huge exponents to
  @'Integral's@ (like: 'Int') or @'RealFloat's@ (like: 'Double' or 'Float')
  will always be bounded by the target type.

homepage:           https://github.com/basvandijk/scientific
bug-reports:        https://github.com/basvandijk/scientific/issues
license:            BSD3
license-file:       LICENSE
author:             Bas van Dijk
maintainer:         Bas van Dijk <v.dijk.bas@gmail.com>
category:           Data
build-type:         Simple
cabal-version:      >=1.10
extra-source-files: changelog
tested-with:
  GHC ==7.6.3
   || ==7.8.4
   || ==7.10.3
   || ==8.0.2
   || ==8.2.2
   || ==8.4.4
   || ==8.6.5
   || ==8.8.4
   || ==8.10.7
   || ==9.0.1
   || ==9.2.1

source-repository head
  type:     git
  location: git://github.com/basvandijk/scientific.git

flag bytestring-builder
  description:
    Depend on the bytestring-builder package for backwards compatibility.

  default:     False
  manual:      False

flag integer-simple
  description: Use the integer-simple package instead of integer-gmp
  default:     False

library
  exposed-modules:
    Data.ByteString.Builder.Scientific
    Data.Scientific
    Data.Text.Lazy.Builder.Scientific

  other-modules:
    GHC.Integer.Compat
    Utils

  other-extensions:
    BangPatterns
    DeriveDataTypeable
    Trustworthy

  ghc-options:      -Wall
  build-depends:
      base                >=4.5     && <4.17
    , binary              >=0.5.1   && <0.9
    , containers          >=0.4.2.1 && <0.7
    , deepseq             >=1.3.0.0 && <1.5
    , hashable            >=1.2.7.0 && <1.5
    , integer-logarithms  >=1.0.3.1 && <1.1
    , primitive           >=0.7.1.0 && <0.8
    , template-haskell    >=2.8     && <2.19
    , text                >=1.2.3.0 && <1.3

  if flag(bytestring-builder)
    build-depends:
        bytestring          >=0.9    && <0.10.4
      , bytestring-builder  >=0.10.4 && <0.11

  else
    build-depends: bytestring >=0.10.4 && <0.12

  if impl(ghc >=9.0)
    build-depends: base >=4.15

    if flag(integer-simple)
      build-depends: invalid-cabal-flag-settings <0

  else
    if flag(integer-simple)
      build-depends: integer-simple

    else
      build-depends: integer-gmp

  if impl(ghc <8)
    other-extensions: TemplateHaskell

  if impl(ghc >= 9.0)
    -- these flags may abort compilation with GHC-8.10
    -- https://gitlab.haskell.org/ghc/ghc/-/merge_requests/3295
    ghc-options: -Winferred-safe-imports -Wmissing-safe-haskell-mode

  hs-source-dirs:   src
  default-language: Haskell2010

test-suite test-scientific
  type:             exitcode-stdio-1.0
  hs-source-dirs:   test
  main-is:          test.hs
  default-language: Haskell2010
  ghc-options:      -Wall
  build-depends:
      base
    , binary
    , QuickCheck        >=2.14.2
    , scientific
    , smallcheck        >=1.0
    , tasty             >=1.4.0.1
    , tasty-hunit       >=0.8
    , tasty-quickcheck  >=0.8
    , tasty-smallcheck  >=0.2
    , text

  if flag(bytestring-builder)
    build-depends:
        bytestring
      , bytestring-builder

  else
    build-depends: bytestring

benchmark bench-scientific
  type:             exitcode-stdio-1.0
  hs-source-dirs:   bench
  main-is:          bench.hs
  default-language: Haskell2010
  ghc-options:      -O2
  build-depends:
      base
    , criterion   >=0.5
    , scientific