mp-units/HEAD/api_reference/gen/qty.same.abs.pt.origs.html

<!DOCTYPE html><html lang='en'><head><title>[qty.same.abs.pt.origs]</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.same.abs.pt.origs'>[qty.pt]</a></h2><h3 ><a class='secnum' style='min-width:80pt'>5.7.2</a> Point origin <a class='abbr_ref' href='qty.pt.orig.html#qty.same.abs.pt.origs'>[qty.pt.orig]</a></h3><h4 ><a class='secnum' style='min-width:95pt'>5.7.2.5</a> Utilities <a class='abbr_ref' href='qty.pt.orig.utils.html#qty.same.abs.pt.origs'>[qty.pt.orig.utils]</a></h4><h4 ><a class='secnum' style='min-width:110pt'>5.7.2.5.1</a> Same absolute <a class='abbr_ref'>[qty.same.abs.pt.origs]</a></h4><div class='texpara'><div id='lib:same-absolute-point-origins,PointOrigin'><div id='lib:PointOrigin,same-absolute-point-origins'><div class='itemdecl'><div class='marginalizedparent'><a class='itemDeclLink' href='#lib:PointOrigin,same-absolute-point-origins'>🔗</a></div><code class='itemdeclcode'><span class='keyword'>template</span><span class='anglebracket'>&lt;</span><a href='qty.pt.orig.concepts.html#concept:PointOrigin' title='5.7.2.2&emsp;Concepts&emsp;[qty.pt.orig.concepts]'><span id='conceptref:PointOrigin'><span class='texttt'>PointOrigin</span></span></a> PO1, <a href='qty.pt.orig.concepts.html#concept:PointOrigin' title='5.7.2.2&emsp;Concepts&emsp;[qty.pt.orig.concepts]'><span id='conceptref:PointOrigin_'><span class='texttt'>PointOrigin</span></span></a> PO2<span class='anglebracket'>&gt;</span>
<span class='keyword'>consteval</span> <span class='keyword'>bool</span> <span class='texttt'><i >same-absolute-point-origins</i></span><span class='parenthesis'>(</span>PO1 po1, PO2 po2<span class='parenthesis'>)</span>;  <span class='comment'>// <i >exposition only</i></span>
</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-units329ffdaacb1bd7bed08565ac80d9eef7ccb1e5b5/source/quantities.tex#L5677'>#</a></div><div class='texpara'><div id='1.sentence-1' class='sentence'><i >Effects</i>: Equivalent to:
<span class='codeblock'><span class='keyword'>if</span> <span class='keyword'>constexpr</span> <span class='parenthesis'>(</span><i >is-derived-from-specialization-of</i><span class='anglebracket'>&lt;</span>PO1, absolute_point_origin<span class='anglebracket'>&gt;</span><span class='parenthesis'>(</span><span class='parenthesis'>)</span> <span class='operator'>&amp;</span><span class='operator'>&amp;</span>
              <i >is-derived-from-specialization-of</i><span class='anglebracket'>&lt;</span>PO2, absolute_point_origin<span class='anglebracket'>&gt;</span><span class='parenthesis'>(</span><span class='parenthesis'>)</span><span class='parenthesis'>)</span>
  <span class='keyword'>return</span> po1 <span class='operator'>=</span><span class='operator'>=</span> po2;
<span class='keyword'>else</span> <span class='keyword'>if</span> <span class='keyword'>constexpr</span> <span class='parenthesis'>(</span><i >is-derived-from-specialization-of</i><span class='anglebracket'>&lt;</span>PO1, relative_point_origin<span class='anglebracket'>&gt;</span><span class='parenthesis'>(</span><span class='parenthesis'>)</span> <span class='operator'>&amp;</span><span class='operator'>&amp;</span>
                   <i >is-derived-from-specialization-of</i><span class='anglebracket'>&lt;</span>PO2, relative_point_origin<span class='anglebracket'>&gt;</span><span class='parenthesis'>(</span><span class='parenthesis'>)</span><span class='parenthesis'>)</span>
  <span class='keyword'>return</span> po1<span class='operator'>.</span><i >absolute-point-origin</i> <span class='operator'>=</span><span class='operator'>=</span> po2<span class='operator'>.</span><i >absolute-point-origin</i>;
<span class='keyword'>else</span> <span class='keyword'>if</span> <span class='keyword'>constexpr</span> <span class='parenthesis'>(</span><i >is-derived-from-specialization-of</i><span class='anglebracket'>&lt;</span>PO1, relative_point_origin<span class='anglebracket'>&gt;</span><span class='parenthesis'>(</span><span class='parenthesis'>)</span><span class='parenthesis'>)</span>
  <span class='keyword'>return</span> po1<span class='operator'>.</span><i >absolute-point-origin</i> <span class='operator'>=</span><span class='operator'>=</span> po2;
<span class='keyword'>else</span> <span class='keyword'>if</span> <span class='keyword'>constexpr</span> <span class='parenthesis'>(</span><i >is-derived-from-specialization-of</i><span class='anglebracket'>&lt;</span>PO2, relative_point_origin<span class='anglebracket'>&gt;</span><span class='parenthesis'>(</span><span class='parenthesis'>)</span><span class='parenthesis'>)</span>
  <span class='keyword'>return</span> po1 <span class='operator'>=</span><span class='operator'>=</span> po2<span class='operator'>.</span><i >absolute-point-origin</i>;
<span class='keyword'>else</span>
  <span class='keyword'>return</span> <span class='literal'>false</span>;
</span></div></div></div></div></div></body></html>