perl-Math-GMP/perl-Math-GMP.spec

#
# spec file for package perl-Math-GMP
#
# Copyright (c) 2024 SUSE LLC
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
# upon. The license for this file, and modifications and additions to the
# file, is the same license as for the pristine package itself (unless the
# license for the pristine package is not an Open Source License, in which
# case the license is the MIT License). An "Open Source License" is a
# license that conforms to the Open Source Definition (Version 1.9)
# published by the Open Source Initiative.

# Please submit bugfixes or comments via https://bugs.opensuse.org/
#


%define cpan_name Math-GMP
Name:           perl-Math-GMP
Version:        2.250.0
Release:        0
# 2.25 -> normalize -> 2.250.0
%define cpan_version 2.25
License:        LGPL-2.1-or-later
Summary:        High speed arbitrary size integer math
URL:            https://metacpan.org/release/%{cpan_name}
Source0:        https://cpan.metacpan.org/authors/id/S/SH/SHLOMIF/%{cpan_name}-%{cpan_version}.tar.gz
Source1:        cpanspec.yml
Source100:      README.md
BuildRequires:  perl
BuildRequires:  perl-macros
BuildRequires:  perl(Alien::GMP) >= 1.80.0
Provides:       perl(Math::GMP) = %{version}
%undefine       __perllib_provides
%{perl_requires}
# MANUAL BEGIN
BuildRequires:  gmp-devel
# MANUAL END

%description
Math::GMP was designed to be a drop-in replacement both for Math::BigInt
and for regular integer arithmetic. Unlike BigInt, though, Math::GMP uses
the GNU gmp library for all of its calculations, as opposed to straight
Perl functions. This can result in speed improvements.

The downside is that this module requires a C compiler to install -- a
small tradeoff in most cases. Also, this module is not 100% compatible with
Math::BigInt.

A Math::GMP object can be used just as a normal numeric scalar would be --
the module overloads most of the normal arithmetic operators to provide as
seamless an interface as possible. However, if you need a perfect
interface, you can do the following:

  use Math::GMP qw(:constant);

  $n = 2 ** (256 * 1024);
  print "n is $n\n";

This would fail without the ':constant' since Perl would use normal doubles
to compute the 250,000 bit number, and thereby overflow it into
meaninglessness (smaller exponents yield less accurate data due to floating
point rounding).

%prep
%autosetup  -n %{cpan_name}-%{cpan_version}

%build
perl Makefile.PL INSTALLDIRS=vendor OPTIMIZE="%{optflags}"
%make_build

%check
make test

%install
%perl_make_install
%perl_process_packlist
%perl_gen_filelist

%files -f %{name}.files
%doc Changes README.md
%license COPYING.LIB LICENSE

%changelog