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scientific.cabal
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name: scientific
version: 0.3.2.1
synopsis: Numbers represented using scientific notation
description:
@Data.Scientific@ provides a space efficient and arbitrary precision
scientific number type.
.
'Scientific' numbers are represented using
<http://en.wikipedia.org/wiki/Scientific_notation scientific notation>. It
uses a coefficient @c :: 'Integer'@ and a base-10 exponent @e :: 'Int'@ (do
note that since we're using an 'Int' to represent the exponent these numbers
aren't truly arbitrary precision). A scientific number corresponds to the
'Fractional' number: @'fromInteger' c * 10 '^^' e@.
.
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 <[email protected]>
category: Data
build-type: Simple
cabal-version: >=1.10
extra-source-files:
changelog
source-repository head
type: git
location: git://github.com/basvandijk/scientific.git
flag bytestring-builder
description: Provide the Data.ByteString.Builder.Scientific module
(requires bytestring >= 0.10)
default: True
manual: True
flag integer-simple
default: False
library
exposed-modules: Data.Scientific
Data.Text.Lazy.Builder.Scientific
other-modules: Math.NumberTheory.Logarithms
other-extensions: DeriveDataTypeable, BangPatterns
ghc-options: -Wall
build-depends: base >= 4.3 && < 4.8
, ghc-prim
, deepseq >= 1.3 && < 1.4
, text >= 0.8 && < 1.3
, hashable >= 1.1.2 && < 1.3
, array >= 0.1 && < 0.6
if flag(integer-simple)
build-depends: integer-simple
else
build-depends: integer-gmp
hs-source-dirs: src
default-language: Haskell2010
if flag(bytestring-builder)
exposed-modules: Data.ByteString.Builder.Scientific
build-depends: bytestring >= 0.10 && < 0.11
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: scientific
, base >= 4.3 && < 4.8
, tasty >= 0.5 && < 0.9
, tasty-ant-xml >= 1.0 && < 1.1
, tasty-smallcheck >= 0.2 && < 0.9
, tasty-quickcheck >= 0.8 && < 0.9
, smallcheck >= 1.0 && < 1.2
, QuickCheck >= 2.5 && < 2.8
, text >= 0.8 && < 1.3
, bytestring >= 0.10 && < 0.11
benchmark bench-scientific
type: exitcode-stdio-1.0
hs-source-dirs: bench src
main-is: bench.hs
default-language: Haskell2010
ghc-options: -O2
build-depends: base >= 4.3 && < 4.8
, criterion >= 0.5 && < 0.12
, ghc-prim
, deepseq >= 1.3 && < 1.4
, text >= 0.8 && < 1.3
, bytestring >= 0.10 && < 0.11
, hashable >= 1.1.2 && < 1.3
, array >= 0.1 && < 0.6
if flag(integer-simple)
build-depends: integer-simple
else
build-depends: integer-gmp