67 lines
2.2 KiB
XML
67 lines
2.2 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!--
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Copyright (C) 2014-2023 Ryan Specialty, LLC.
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This file is part of tame-core.
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tame-core is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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-->
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<package xmlns="http://www.lovullo.com/rater"
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xmlns:c="http://www.lovullo.com/calc"
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xmlns:t="http://www.lovullo.com/rater/apply-template"
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core="true"
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desc="Vector definition">
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This package provides a type of global~\tt{let}.
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The term ``define'' is consistent with the influence of the language
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Scheme on this system.
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One a primitive is provided,
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this abstraction can be modified to make use of it.
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This addresses the challenge with defining arbitrary values.
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TAME was designed for a map-reduce style of computation that
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maintains index assocaitions.
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This makes it easy to reason about data flow.
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Consequently,
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arbitrary definitions should be used sparingly until they become a core
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feature of TAME.
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<template name="_define-vector_"
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desc="Define a vector with an arbitrary value">
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<param name="@values@" desc="Definition" />
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<param name="@generates@" desc="Vector name" />
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<param name="@desc@" desc="Vector description" />
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<rate yields="_{@generates@}">
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<c:let>
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<c:values>
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<c:value name="value" type="float" set="vector"
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desc="{@desc@} (intermediate value)">
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<param-copy name="@values@" />
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</c:value>
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</c:values>
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<!-- effectively means @generates@ = value -->
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<c:sum of="value" generates="@generates@" index="k"
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desc="@desc@">
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<c:value-of name="value" index="k" />
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</c:sum>
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</c:let>
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</rate>
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</template>
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</package>
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