Imported Upstream version 1.64.0
[platform/upstream/boost.git] / doc / html / boost / units / quantity.html
index 99131ec..7347903 100644 (file)
@@ -8,7 +8,7 @@
 <link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset">
 <link rel="up" href="../../boost_units/Reference.html#header.boost.units.quantity_hpp" title="Header &lt;boost/units/quantity.hpp&gt;">
 <link rel="prev" href="root_typeof_helper.html" title="Struct template root_typeof_helper">
-<link rel="next" href="quantity_BOOS_idp996395216.html" title="Class template quantity&lt;BOOST_UNITS_DIMENSIONLESS_UNIT(System), Y&gt;">
+<link rel="next" href="quantity_BOOS_idp770255952.html" title="Class template quantity&lt;BOOST_UNITS_DIMENSIONLESS_UNIT(System), Y&gt;">
 </head>
 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
 <table cellpadding="2" width="100%"><tr>
@@ -21,7 +21,7 @@
 </tr></table>
 <hr>
 <div class="spirit-nav">
-<a accesskey="p" href="root_typeof_helper.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../boost_units/Reference.html#header.boost.units.quantity_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="quantity_BOOS_idp996395216.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a>
+<a accesskey="p" href="root_typeof_helper.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../boost_units/Reference.html#header.boost.units.quantity_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="quantity_BOOS_idp770255952.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a>
 </div>
 <div class="refentry">
 <a name="boost.units.quantity"></a><div class="titlepage"></div>
   <span class="keyword">typedef</span> <span class="identifier">Unit</span>                <a name="boost.units.quantity.unit_type"></a><span class="identifier">unit_type</span><span class="special">;</span> 
 
   <span class="comment">// <a class="link" href="quantity.html#boost.units.quantityconstruct-copy-destruct">construct/copy/destruct</a></span>
-  <a class="link" href="quantity.html#idp996362640-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
-  <a class="link" href="quantity.html#idp996362928-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="identifier">unspecified_null_pointer_constant_type</span><span class="special">)</span><span class="special">;</span>
-  <a class="link" href="quantity.html#idp996363920-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">this_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+  <a class="link" href="quantity.html#idp770223376-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
+  <a class="link" href="quantity.html#idp770223664-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="identifier">unspecified_null_pointer_constant_type</span><span class="special">)</span><span class="special">;</span>
+  <a class="link" href="quantity.html#idp770224656-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">this_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-    <a class="link" href="quantity.html#idp996366160-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span>
+    <a class="link" href="quantity.html#idp770226896-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span>
   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-    <span class="keyword">explicit</span> <a class="link" href="quantity.html#idp996369904-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span>
+    <span class="keyword">explicit</span> <a class="link" href="quantity.html#idp770230640-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span>
   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-    <span class="keyword">explicit</span> <a class="link" href="quantity.html#idp996376848-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span>
+    <span class="keyword">explicit</span> <a class="link" href="quantity.html#idp770237584-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span>
   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-    <a class="link" href="quantity.html#idp996381424-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span>
-  <span class="keyword">explicit</span> <a class="link" href="quantity.html#idp996393280-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">int</span><span class="special">)</span><span class="special">;</span>
-  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp996364896-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">this_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
-  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> YY<span class="special">&gt;</span> <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp996373920-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+    <a class="link" href="quantity.html#idp770242160-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span>
+  <span class="keyword">explicit</span> <a class="link" href="quantity.html#idp770254016-bb"><span class="identifier">quantity</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">int</span><span class="special">)</span><span class="special">;</span>
+  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp770225632-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">this_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> YY<span class="special">&gt;</span> <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp770234656-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-    <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp996385744-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+    <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp770246480-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
 
-  <span class="comment">// <a class="link" href="quantity.html#idp996339904-bb">private member functions</a></span>
-   <a class="link" href="quantity.html#idp996340480-bb"><span class="identifier">BOOST_MPL_ASSERT_NOT</span></a><span class="special">(</span><span class="emphasis"><em><span class="identifier">unspecified</span></em></span><span class="special">)</span><span class="special">;</span>
+  <span class="comment">// <a class="link" href="quantity.html#idp770200640-bb">private member functions</a></span>
+   <a class="link" href="quantity.html#idp770201216-bb"><span class="identifier">BOOST_MPL_ASSERT_NOT</span></a><span class="special">(</span><span class="emphasis"><em><span class="identifier">unspecified</span></em></span><span class="special">)</span><span class="special">;</span>
 
-  <span class="comment">// <a class="link" href="quantity.html#idp996342144-bb">public member functions</a></span>
-  <span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp996342704-bb"><span class="identifier">value</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
+  <span class="comment">// <a class="link" href="quantity.html#idp770202880-bb">public member functions</a></span>
+  <span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp770203440-bb"><span class="identifier">value</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-    <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp996344640-bb"><span class="keyword">operator</span><span class="special">+=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+    <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp770205376-bb"><span class="keyword">operator</span><span class="special">+=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-    <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp996348432-bb"><span class="keyword">operator</span><span class="special">-=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+    <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp770209168-bb"><span class="keyword">operator</span><span class="special">-=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-    <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp996351824-bb"><span class="keyword">operator</span><span class="special">*=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+    <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp770212560-bb"><span class="keyword">operator</span><span class="special">*=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
   <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-    <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp996355216-bb"><span class="keyword">operator</span><span class="special">/=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
-  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp996359008-bb"><span class="keyword">operator</span><span class="special">*=</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
-  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp996360944-bb"><span class="keyword">operator</span><span class="special">/=</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+    <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp770215952-bb"><span class="keyword">operator</span><span class="special">/=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp770219744-bb"><span class="keyword">operator</span><span class="special">*=</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a class="link" href="quantity.html#idp770221680-bb"><span class="keyword">operator</span><span class="special">/=</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
 
-  <span class="comment">// <a class="link" href="quantity.html#idp996389248-bb">public static functions</a></span>
-  <span class="keyword">static</span> <span class="identifier">this_type</span> <a class="link" href="quantity.html#idp996389808-bb"><span class="identifier">from_value</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
+  <span class="comment">// <a class="link" href="quantity.html#idp770249984-bb">public static functions</a></span>
+  <span class="keyword">static</span> <span class="identifier">this_type</span> <a class="link" href="quantity.html#idp770250544-bb"><span class="identifier">from_value</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
 <span class="special">}</span><span class="special">;</span></pre></div>
 <div class="refsect1">
-<a name="idp675539744"></a><h2>Description</h2>
+<a name="idp587949680"></a><h2>Description</h2>
 <div class="refsect2">
-<a name="idp675540160"></a><h3>
+<a name="idp587950096"></a><h3>
 <a name="boost.units.quantityconstruct-copy-destruct"></a><code class="computeroutput">quantity</code> 
         public
        construct/copy/destruct</h3>
 <div class="orderedlist"><ol class="orderedlist" type="1">
-<li class="listitem"><pre class="literallayout"><a name="idp996362640-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li>
-<li class="listitem"><pre class="literallayout"><a name="idp996362928-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="identifier">unspecified_null_pointer_constant_type</span><span class="special">)</span><span class="special">;</span></pre></li>
-<li class="listitem"><pre class="literallayout"><a name="idp996363920-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">this_type</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre></li>
+<li class="listitem"><pre class="literallayout"><a name="idp770223376-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li>
+<li class="listitem"><pre class="literallayout"><a name="idp770223664-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="identifier">unspecified_null_pointer_constant_type</span><span class="special">)</span><span class="special">;</span></pre></li>
+<li class="listitem"><pre class="literallayout"><a name="idp770224656-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">this_type</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre></li>
 <li class="listitem">
 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-  <a name="idp996366160-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre>implicit conversion between value types is allowed if allowed for value types themselves </li>
+  <a name="idp770226896-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre>implicit conversion between value types is allowed if allowed for value types themselves </li>
 <li class="listitem">
 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-  <span class="keyword">explicit</span> <a name="idp996369904-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre>implicit conversion between value types is not allowed if not allowed for value types themselves </li>
+  <span class="keyword">explicit</span> <a name="idp770230640-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre>implicit conversion between value types is not allowed if not allowed for value types themselves </li>
 <li class="listitem">
 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-  <span class="keyword">explicit</span> <a name="idp996376848-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre>explicit conversion between different unit systems is allowed if implicit conversion is disallowed </li>
+  <span class="keyword">explicit</span> <a name="idp770237584-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre>explicit conversion between different unit systems is allowed if implicit conversion is disallowed </li>
 <li class="listitem">
 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-  <a name="idp996381424-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre>implicit conversion between different unit systems is allowed if each fundamental dimension is implicitly convertible </li>
-<li class="listitem"><pre class="literallayout"><span class="keyword">explicit</span> <a name="idp996393280-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> val<span class="special">,</span> <span class="keyword">int</span><span class="special">)</span><span class="special">;</span></pre></li>
-<li class="listitem"><pre class="literallayout"><span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp996364896-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">this_type</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre></li>
+  <a name="idp770242160-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span><span class="special">;</span></pre>implicit conversion between different unit systems is allowed if each fundamental dimension is implicitly convertible </li>
+<li class="listitem"><pre class="literallayout"><span class="keyword">explicit</span> <a name="idp770254016-bb"></a><span class="identifier">quantity</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> val<span class="special">,</span> <span class="keyword">int</span><span class="special">)</span><span class="special">;</span></pre></li>
+<li class="listitem"><pre class="literallayout"><span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp770225632-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">this_type</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre></li>
 <li class="listitem">
 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp996373920-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre>implicit assignment between value types is allowed if allowed for value types themselves </li>
+  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp770234656-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre>implicit assignment between value types is allowed if allowed for value types themselves </li>
 <li class="listitem">
 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp996385744-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre>implicit assignment between different unit systems is allowed if each fundamental dimension is implicitly convertible </li>
+  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp770246480-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre>implicit assignment between different unit systems is allowed if each fundamental dimension is implicitly convertible </li>
 </ol></div>
 </div>
 <div class="refsect2">
-<a name="idp675661344"></a><h3>
-<a name="idp996339904-bb"></a><code class="computeroutput">quantity</code> private member functions</h3>
-<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><pre class="literallayout"> <a name="idp996340480-bb"></a><span class="identifier">BOOST_MPL_ASSERT_NOT</span><span class="special">(</span><span class="emphasis"><em><span class="identifier">unspecified</span></em></span><span class="special">)</span><span class="special">;</span></pre></li></ol></div>
+<a name="idp588071088"></a><h3>
+<a name="idp770200640-bb"></a><code class="computeroutput">quantity</code> private member functions</h3>
+<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><pre class="literallayout"> <a name="idp770201216-bb"></a><span class="identifier">BOOST_MPL_ASSERT_NOT</span><span class="special">(</span><span class="emphasis"><em><span class="identifier">unspecified</span></em></span><span class="special">)</span><span class="special">;</span></pre></li></ol></div>
 </div>
 <div class="refsect2">
-<a name="idp675667952"></a><h3>
-<a name="idp996342144-bb"></a><code class="computeroutput">quantity</code> public member functions</h3>
+<a name="idp588077760"></a><h3>
+<a name="idp770202880-bb"></a><code class="computeroutput">quantity</code> public member functions</h3>
 <div class="orderedlist"><ol class="orderedlist" type="1">
 <li class="listitem">
-<pre class="literallayout"><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> <a name="idp996342704-bb"></a><span class="identifier">value</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>constant accessor to value <p>can add a quantity of the same type if add_typeof_helper&lt;value_type,value_type&gt;::type is convertible to value_type </p>
+<pre class="literallayout"><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> <a name="idp770203440-bb"></a><span class="identifier">value</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>constant accessor to value <p>can add a quantity of the same type if add_typeof_helper&lt;value_type,value_type&gt;::type is convertible to value_type </p>
 </li>
 <li class="listitem">
 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp996344640-bb"></a><span class="keyword">operator</span><span class="special">+=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre>can subtract a quantity of the same type if subtract_typeof_helper&lt;value_type,value_type&gt;::type is convertible to value_type </li>
+  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp770205376-bb"></a><span class="keyword">operator</span><span class="special">+=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre>can subtract a quantity of the same type if subtract_typeof_helper&lt;value_type,value_type&gt;::type is convertible to value_type </li>
 <li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp996348432-bb"></a><span class="keyword">operator</span><span class="special">-=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre></li>
+  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp770209168-bb"></a><span class="keyword">operator</span><span class="special">-=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre></li>
 <li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp996351824-bb"></a><span class="keyword">operator</span><span class="special">*=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre></li>
+  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp770212560-bb"></a><span class="keyword">operator</span><span class="special">*=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre></li>
 <li class="listitem">
 <pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Unit2<span class="special">,</span> <span class="keyword">typename</span> YY<span class="special">&gt;</span> 
-  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp996355216-bb"></a><span class="keyword">operator</span><span class="special">/=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre>can multiply a quantity by a scalar value_type if multiply_typeof_helper&lt;value_type,value_type&gt;::type is convertible to value_type </li>
+  <span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp770215952-bb"></a><span class="keyword">operator</span><span class="special">/=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="quantity.html" title="Class template quantity">quantity</a><span class="special">&lt;</span> <span class="identifier">Unit2</span><span class="special">,</span> <span class="identifier">YY</span> <span class="special">&gt;</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre>can multiply a quantity by a scalar value_type if multiply_typeof_helper&lt;value_type,value_type&gt;::type is convertible to value_type </li>
 <li class="listitem">
-<pre class="literallayout"><span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp996359008-bb"></a><span class="keyword">operator</span><span class="special">*=</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre>can divide a quantity by a scalar value_type if divide_typeof_helper&lt;value_type,value_type&gt;::type is convertible to value_type </li>
-<li class="listitem"><pre class="literallayout"><span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp996360944-bb"></a><span class="keyword">operator</span><span class="special">/=</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre></li>
+<pre class="literallayout"><span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp770219744-bb"></a><span class="keyword">operator</span><span class="special">*=</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre>can divide a quantity by a scalar value_type if divide_typeof_helper&lt;value_type,value_type&gt;::type is convertible to value_type </li>
+<li class="listitem"><pre class="literallayout"><span class="identifier">this_type</span> <span class="special">&amp;</span> <a name="idp770221680-bb"></a><span class="keyword">operator</span><span class="special">/=</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> source<span class="special">)</span><span class="special">;</span></pre></li>
 </ol></div>
 </div>
 <div class="refsect2">
-<a name="idp675752112"></a><h3>
-<a name="idp996389248-bb"></a><code class="computeroutput">quantity</code> public static functions</h3>
+<a name="idp588161856"></a><h3>
+<a name="idp770249984-bb"></a><code class="computeroutput">quantity</code> public static functions</h3>
 <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
-<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">this_type</span> <a name="idp996389808-bb"></a><span class="identifier">from_value</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> val<span class="special">)</span><span class="special">;</span></pre>Construct quantity directly from <code class="computeroutput">value_type</code> (potentially dangerous). </li></ol></div>
+<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">this_type</span> <a name="idp770250544-bb"></a><span class="identifier">from_value</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> val<span class="special">)</span><span class="special">;</span></pre>Construct quantity directly from <code class="computeroutput">value_type</code> (potentially dangerous). </li></ol></div>
 </div>
 <div class="refsect2">
-<a name="idp675762288"></a><h3>Specializations</h3>
-<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p><a class="link" href="quantity_BOOS_idp996395216.html" title="Class template quantity&lt;BOOST_UNITS_DIMENSIONLESS_UNIT(System), Y&gt;">Class template quantity&lt;BOOST_UNITS_DIMENSIONLESS_UNIT(System), Y&gt;</a></p></li></ul></div>
+<a name="idp588172032"></a><h3>Specializations</h3>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p><a class="link" href="quantity_BOOS_idp770255952.html" title="Class template quantity&lt;BOOST_UNITS_DIMENSIONLESS_UNIT(System), Y&gt;">Class template quantity&lt;BOOST_UNITS_DIMENSIONLESS_UNIT(System), Y&gt;</a></p></li></ul></div>
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