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15 lines
5.9 KiB
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<!DOCTYPE html><html lang='en'><head><title>[qty.point]</title><meta charset='UTF-8'/><link rel='stylesheet' type='text/css' href='14882.css'/><link rel='stylesheet' type='text/css' href='https://fonts.googleapis.com/css2?family=Noto+Serif'/><link rel='stylesheet' type='text/css' href='https://fonts.googleapis.com/css2?family=Noto+Sans'/><link rel='stylesheet' type='text/css' href='https://fonts.googleapis.com/css2?family=Noto+Sans+Mono'/><link rel='icon' href='icon.png'/><link rel='stylesheet' type='text/css' href='expanded.css' title='Normal'/><link rel='alternate stylesheet' type='text/css' href='colored.css' title='Notes and examples colored'/><link rel='alternate stylesheet' type='text/css' href='normative-only.css' title='Notes and examples hidden'/></head><body><div class='wrapper'><h1 ><a class='secnum' style='min-width:50pt'>5</a> Quantities and units library <a class='abbr_ref' href='index.html#quantities'>[quantities]</a></h1><h2 ><a class='secnum' style='min-width:65pt'>5.7</a> Quantity point <a class='abbr_ref' href='qty.pt.html#qty.point'>[qty.pt]</a></h2><h3 ><a class='secnum' style='min-width:80pt'>5.7.14</a> Construction helper <span class='texttt'>point</span> <a class='abbr_ref'>[qty.point]</a></h3><div class='texpara'><span id='lib:point'><div class='marginalizedparent'><a class='itemDeclLink' href='#lib:point'>🔗</a></div><span class='codeblock'><span class='keyword'>namespace</span> mp_units <span class='curlybracket'>{</span>
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<span class='keyword'>template</span><span class='anglebracket'><</span><a href='qty.ref.concepts.html#concept:Reference' title='5.4.5 Concepts [qty.ref.concepts]'><span id='conceptref:Reference'><span class='tcode_in_codeblock'>Reference</span></span></a> R<span class='anglebracket'>></span>
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<span class='keyword'>struct</span> point_ <span class='curlybracket'>{</span>
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<span class='keyword'>template</span><span class='anglebracket'><</span><span class='keyword'>typename</span> FwdRep,
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<a href='qty.rep.concepts.html#concept:RepresentationOf' title='5.5.4 Concepts [qty.rep.concepts]'><span id='conceptref:RepresentationOf'><span class='tcode_in_codeblock'>RepresentationOf</span></span></a><span class='anglebracket'><</span>get_quantity_spec<span class='parenthesis'>(</span>R<span class='curlybracket'>{</span><span class='curlybracket'>}</span><span class='parenthesis'>)</span><span class='anglebracket'>></span> Rep <span class='operator'>=</span> std<span class='operator'>::</span>remove_cvref_t<span class='anglebracket'><</span>FwdRep<span class='anglebracket'>></span><span class='anglebracket'>></span>
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<span class='keyword'>constexpr</span> quantity_point<span class='anglebracket'><</span>R<span class='curlybracket'>{</span><span class='curlybracket'>}</span>, default_point_origin<span class='parenthesis'>(</span>R<span class='curlybracket'>{</span><span class='curlybracket'>}</span><span class='parenthesis'>)</span>, Rep<span class='anglebracket'>></span> <span class='keyword'>operator</span><span class='parenthesis'>(</span><span class='parenthesis'>)</span><span class='parenthesis'>(</span>FwdRep<span class='operator'>&</span><span class='operator'>&</span> lhs<span class='parenthesis'>)</span> <span class='keyword'>const</span>;
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<span class='curlybracket'>}</span>;
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<span class='curlybracket'>}</span>
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</span></span></div><div class='texpara'><div id='lib:point_,operator()'><div id='lib:operator(),point_'><div class='itemdecl'><div class='marginalizedparent'><a class='itemDeclLink' href='#lib:operator(),point_'>🔗</a></div><code class='itemdeclcode'><span class='keyword'>template</span><span class='anglebracket'><</span><span class='keyword'>typename</span> FwdRep,
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<a href='qty.rep.concepts.html#concept:RepresentationOf' title='5.5.4 Concepts [qty.rep.concepts]'><span id='conceptref:RepresentationOf_'><span class='texttt'>RepresentationOf</span></span></a><span class='anglebracket'><</span>get_quantity_spec<span class='parenthesis'>(</span>R<span class='curlybracket'>{</span><span class='curlybracket'>}</span><span class='parenthesis'>)</span><span class='anglebracket'>></span> Rep <span class='operator'>=</span> std<span class='operator'>::</span>remove_cvref_t<span class='anglebracket'><</span>FwdRep<span class='anglebracket'>></span><span class='anglebracket'>></span>
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<span class='keyword'>constexpr</span> quantity_point<span class='anglebracket'><</span>R<span class='curlybracket'>{</span><span class='curlybracket'>}</span>, default_point_origin<span class='parenthesis'>(</span>R<span class='curlybracket'>{</span><span class='curlybracket'>}</span><span class='parenthesis'>)</span>, Rep<span class='anglebracket'>></span> <span class='keyword'>operator</span><span class='parenthesis'>(</span><span class='parenthesis'>)</span><span class='parenthesis'>(</span>FwdRep<span class='operator'>&</span><span class='operator'>&</span> lhs<span class='parenthesis'>)</span> <span class='keyword'>const</span>;
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</code></div></div></div></div><div class='para' id='1'><div class='marginalizedparent'><a class='marginalized' href='#1'>1</a></div><div class='itemdescr'><div class='sourceLinkParent'><a class='sourceLink' href='https://github.com/mpusz/mp-unitse9c5f7236ebfe1b287a5a4a49aaf57fbefa87233/source/quantities.tex#L6503'>#</a></div><div class='texpara'><div id='1.sentence-1' class='sentence'><i >Effects</i>: Equivalent to:
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<span class='texttt'><span class='keyword'>return</span> quantity_<span class='shy'></span>point<span class='curlybracket'>{</span>quantity<span class='curlybracket'>{</span>std<span class='operator'>​::​</span>forward<span class='anglebracket'><</span>FwdRep<span class='anglebracket'>></span><span class='parenthesis'>(</span>lhs<span class='parenthesis'>)</span>, R<span class='curlybracket'>{</span><span class='curlybracket'>}</span><span class='curlybracket'>}</span><span class='curlybracket'>}</span>;</span></div></div></div></div></div></body></html> |