%global pkg_name scientific
%global pkgver %{pkg_name}-%{version}
%bcond_with tests

Name:           ghc-%{pkg_name}
Version:        0.3.7.0
Release:        1
Summary:        Numbers represented using scientific notation
License:        BSD-3-Clause
URL:            https://hackage.haskell.org/package/%{pkg_name}
Source0:        https://hackage.haskell.org/package/%{pkg_name}-%{version}/%{pkg_name}-%{version}.tar.gz
Source1:        https://hackage.haskell.org/package/%{pkg_name}-%{version}/revision/5.cabal#/%{pkg_name}.cabal
BuildRequires:  ghc-Cabal-devel
BuildRequires:  ghc-base-devel
BuildRequires:  ghc-base-prof
BuildRequires:  ghc-binary-devel
BuildRequires:  ghc-binary-prof
BuildRequires:  ghc-bytestring-devel
BuildRequires:  ghc-bytestring-prof
BuildRequires:  ghc-containers-devel
BuildRequires:  ghc-containers-prof
BuildRequires:  ghc-deepseq-devel
BuildRequires:  ghc-deepseq-prof
BuildRequires:  ghc-hashable-devel
BuildRequires:  ghc-hashable-prof
BuildRequires:  ghc-integer-logarithms-devel
BuildRequires:  ghc-integer-logarithms-prof
BuildRequires:  ghc-primitive-devel
BuildRequires:  ghc-primitive-prof
BuildRequires:  ghc-rpm-macros
BuildRequires:  ghc-template-haskell-devel
BuildRequires:  ghc-template-haskell-prof
BuildRequires:  ghc-text-devel
BuildRequires:  ghc-text-prof
ExcludeArch:    %{ix86}
%if %{with tests}
BuildRequires:  ghc-QuickCheck-devel
BuildRequires:  ghc-QuickCheck-prof
BuildRequires:  ghc-smallcheck-devel
BuildRequires:  ghc-smallcheck-prof
BuildRequires:  ghc-tasty-devel
BuildRequires:  ghc-tasty-hunit-devel
BuildRequires:  ghc-tasty-hunit-prof
BuildRequires:  ghc-tasty-prof
BuildRequires:  ghc-tasty-quickcheck-devel
BuildRequires:  ghc-tasty-quickcheck-prof
BuildRequires:  ghc-tasty-smallcheck-devel
BuildRequires:  ghc-tasty-smallcheck-prof
%endif

%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.

%package devel
Summary:        Haskell %{pkg_name} library development files
Requires:       %{name} = %{version}-%{release}
Requires:       ghc-compiler = %{ghc_version}
Requires(post): ghc-compiler = %{ghc_version}
Requires(postun): ghc-compiler = %{ghc_version}

%description devel
This package provides the Haskell %{pkg_name} library development files.

%package -n ghc-%{pkg_name}-help
Summary:        Haskell %{pkg_name} library documentation
BuildArch:      noarch

%description -n ghc-%{pkg_name}-help
This package provides the Haskell %{pkg_name} library documentation.

%package -n ghc-%{pkg_name}-prof
Summary:        Haskell %{pkg_name} profiling library
Requires:       ghc-%{pkg_name}-devel = %{version}-%{release}
Supplements:    (ghc-%{pkg_name}-devel and ghc-prof)

%description -n ghc-%{pkg_name}-prof
This package provides the Haskell %{pkg_name} profiling library.

%prep
%autosetup -n %{pkg_name}-%{version}
cp -p %{SOURCE1} %{pkg_name}.cabal

%build
%ghc_lib_build

%install
%ghc_lib_install

%check
%cabal_test

%post devel
%ghc_pkg_recache

%postun devel
%ghc_pkg_recache

%files -f %{name}.files
%license LICENSE

%files devel -f %{name}-devel.files
%doc changelog

%files -n ghc-%{pkg_name}-help -f ghc-%{pkg_name}-help.files
%license LICENSE

%files -n ghc-%{pkg_name}-prof -f ghc-%{pkg_name}-prof.files

%changelog
* Tue Aug 22 2023 Lin Runze <lrzlin@163.com> 0.3.7.0-1
- Initial packaging (Version 0.3.7.0)