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29 lines
1.4 KiB
29 lines
1.4 KiB
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
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<pkgmetadata>
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<maintainer type="project">
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<email>sci-physics@gentoo.org</email>
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<name>Gentoo Physics Project</name>
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</maintainer>
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<longdescription lang="en">
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The HepMC package is an object oriented event record written in C++
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for High Energy Physics Monte Carlo Generators. Many extensions from
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HEPEVT, the Fortran HEP standard, are supported: the number of entries
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is unlimited, spin density matrices can be stored with each vertex,
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flow patterns (such as color) can be stored and traced, integers
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representing random number generator states can be stored, and an
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arbitrary number of event weights can be included. Particles and
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vertices are kept separate in a graph structure, physically similar to
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a physics event. The added information supports the modularisation of
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event generators. The package has been kept as simple as possible with
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minimal internal/external dependencies. Event information is accessed
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by means of iterators supplied with the package.
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Reference: M. Dobbs and J.B. Hansen, Comput. Phys. Commun. 134 (2001)41.
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</longdescription>
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<use>
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<flag name="gev">Build with GeV instead of default MeV for momentum units</flag>
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<flag name="cm">Build with cm instead of default mm for length units</flag>
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</use>
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</pkgmetadata>
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