Updated for VC++ quirks and overload code example.

Merge branch 'master' into develop
Merge branch 'develop'
2025-06-30 06:20:57 +02:00 · 2016-04-14 08:52:06 -04:00 · 2015-10-16 18:47:02 -04:00 · 2015-10-14 22:36:27 -04:00 · 2015-10-08 11:34:04 -04:00 · 2015-10-08 11:31:27 +01:00
13 changed files with 186 additions and 93 deletions
--- a/doc/AppendixA-AnIntroductiontoPreprocessorMetaprogramming.html
+++ b/doc/AppendixA-AnIntroductiontoPreprocessorMetaprogramming.html
@ -5,7 +5,7 @@
  <head>
    <meta http-equiv="content-type" content="application/xhtml+xml; charset=UTF-8" />
    <meta name="generator" content="Docutils 0.3.8: http://docutils.sourceforge.net/" />
-    <title>Appendix A   An Introduction to Preprocessor Metaprogramming</title>
+    <title>Appendix A - An Introduction to Preprocessor Metaprogramming</title>
    <meta name="copyright" content="From &quot;C++ Template Metaprogramming,&quot; by David Abrahams and Aleksey Gurtovoy.  Copyright (c) 2005 by Pearson Education, Inc. Reprinted with permission." />
    <style type="text/css">

@ -248,7 +248,7 @@ ul.auto-toc {
 </style> </head>
  <body><br />
    <div class="document" id="preprocessor-title">
-      <h1 class="title">Appendix A   An Introduction to Preprocessor
+      <h1 class="title">Appendix A - An Introduction to Preprocessor
        Metaprogramming</h1>
      <table class="docinfo" frame="void" rules="none">
        <colgroup><col class="docinfo-name" /> <col class="docinfo-content" />
@ -2491,4 +2491,4 @@ Although the formulation above will work, it does unnecessary workwhen ``n == 0`
 </html>
 <!--
     FILE ARCHIVED ON 19:59:10 Mar 30, 2013 AND RETRIEVED FROM THE     INTERNET ARCHIVE ON 21:06:19 May 19, 2015.     JAVASCRIPT APPENDED BY WAYBACK MACHINE, COPYRIGHT INTERNET ARCHIVE.
-     ALL OTHER CONTENT MAY ALSO BE PROTECTED BY COPYRIGHT (17 U.S.C.     SECTION 108(a)(3)).-->
+     ALL OTHER CONTENT MAY ALSO BE PROTECTED BY COPYRIGHT (17 U.S.C.     SECTION 108(a)(3)).-->
--- a/doc/contents.html
+++ b/doc/contents.html
@ -8,7 +8,7 @@
 	</style>
  </head>
  <body>
-    <h4><a href="Appendix%20A%20%C2%A0%20An%20Introduction%20to%20Preprocessor%20Metaprogramming.html"
+    <h4><a href="AppendixA-AnIntroductiontoPreprocessorMetaprogramming.html"
        target="_top">Introduction</a></h4>
    <h4><a href="topics.html">Topics</a></h4>
    <a href="topics.html">
--- a/doc/headers/facilities/identity.html
+++ b/doc/headers/facilities/identity.html
@ -5,7 +5,7 @@
 </head>
 <body>
 	<div style="margin-left:  0px;">
-		The <b>facilities/identity.hpp</b> header defines a utility macro to use with <b>BOOST_PP_IF</b> and <b>BOOST_PP_IIF</b>.
+		The <b>facilities/identity.hpp</b> header defines utility macros to use with <b>BOOST_PP_IF</b> and <b>BOOST_PP_IIF</b>.
 	</div>
 	<h4>Usage</h4>
 		<div class="code">
@ -14,11 +14,13 @@
 	<h4>Contents</h4>
 		<ul>
 			<li><a href="../../ref/identity.html">BOOST_PP_IDENTITY</a></li>
+			<li><a href="../../ref/identity_n.html">BOOST_PP_IDENTITY_N</a></li>
 		</ul>
 	<hr size="1">
 	<div style="margin-left: 0px;">
 		<i><EFBFBD> Copyright <a href="http://www.housemarque.com" target="_top">Housemarque Oy</a> 2002</i>
 		</br><i><EFBFBD> Copyright Paul Mensonides 2002</i>
+		</br><i><EFBFBD> Copyright Edward Diener 2015</i>
 	</div>
 	<div style="margin-left: 0px;">
 		<p><small>Distributed under the Boost Software License, Version 1.0. (See
--- a/doc/headers/tuple/enum.html
+++ b/doc/headers/tuple/enum.html
@ -2,7 +2,7 @@
  <title>tuple/enum.hpp</title>
 	<link rel="stylesheet" type="text/css" href="../../styles.css"></head><body>
 	<div style="margin-left: 0px;">
-		The <b>tuple/enum.hpp</b> header defines a macro to onvert a <i>tuple</i> to its comma-separated elements.
+		The <b>tuple/enum.hpp</b> header defines a macro to convert a <i>tuple</i> to its comma-separated elements.
 	</div>
 	<h4>Usage</h4>
 		<div class="code">
--- a/doc/ref.html
+++ b/doc/ref.html
@ -99,6 +99,7 @@
      <li><a href="ref/greater_equal_d.html">GREATER_EQUAL_D</a></li>
      <!-- I -->
      <li><a href="ref/identity.html">IDENTITY</a></li>
+      <li><a href="ref/identity_n.html">IDENTITY_N</a></li>
      <li><a href="ref/if.html">IF</a></li>
      <li><a href="ref/iif.html">IIF</a></li>
      <li><a href="ref/inc.html">INC</a></li>
--- a/doc/ref/identity_n.html
+++ b/doc/ref/identity_n.html
@ -0,0 +1,58 @@
+<html>
+<head>
+	<title>BOOST_PP_IDENTITY_N</title>
+	<link rel="stylesheet" type="text/css" href="../styles.css">
+</head>
+<body>
+	<div style="margin-left:  0px;">
+	    The <b>BOOST_PP_IDENTITY_N</b> macro expands to its first argument when invoked.
+	</div>
+	<h4>Usage</h4>
+		<div class="code">
+			<b>BOOST_PP_IDENTITY_N</b>(<i>item,n</i>)(n-arguments)
+		</div>
+	<h4>Arguments</h4>
+		<dl>
+			<dt>item</dt>
+			<dd>
+				The result of the expansion.
+			</dd>
+			<dt>n</dt>
+			<dd>
+				The number of arguments when invoked.
+			</dd>
+		</dl>
+	<h4>Remarks</h4>
+		<div>
+			This macro is designed to be used with <b>BOOST_PP_IF</b> and <b>BOOST_PP_IIF</b> when only one of the clauses needs to be invoked.
+		</div>
+	<h4>See Also</h4>
+		<ul>
+			<li><a href="if.html">BOOST_PP_IF</a></li>
+			<li><a href="iif.html">BOOST_PP_IIF</a></li>
+		</ul>
+	<h4>Requirements</h4>
+		<div>
+			<b>Header:</b> &nbsp;<a href="../headers/facilities/identity_n.html">&lt;boost/preprocessor/facilities/identity.hpp&gt;</a>
+		</div>
+	<h4>Sample Code</h4>
+<div><pre>
+#include &lt;<a href="../headers/control/if.html">boost/preprocessor/control/if.hpp</a>&gt;
+#include &lt;<a href="../headers/facilities/identity.html">boost/preprocessor/facilities/identity.hpp</a>&gt;
+
+#define MACRO_CAT(y,z) y ## z
+#define MACRO(n) <a href="if.html">BOOST_PP_IF</a>(n, <a href="identity_n.html">BOOST_PP_IDENTITY_N</a>(x,2), MACRO_CAT)(a,b)
+
+MACRO(0) // expands to ab
+MACRO(1) // expands to x
+</pre></div>
+	<hr size="1">
+    <div style="margin-left: 0px"><i>&copy; Copyright Edward Diener 2015</i></div>
+	<div style="margin-left: 0px;">
+		<p><small>Distributed under the Boost Software License, Version 1.0. (See
+		accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
+		copy at <a href=
+		"http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
+	</div>
+</body>
+</html>
--- a/doc/ref/overload.html
+++ b/doc/ref/overload.html
@ -1,46 +1,58 @@
 <html>
  <head>
+    <meta  content="text/html; charset=windows-1252"  http-equiv="content-type">
    <title>BOOST_PP_OVERLOAD</title>
-    <link rel="stylesheet" type="text/css" href="../styles.css">
+    <link  rel="stylesheet"  type="text/css"  href="../styles.css">
  </head>
  <body>
-<div style="margin-left: 0px;"> The <b>BOOST_PP_OVERLOAD</b> variadic macro expands to the name of a non-variadic macro having a given number of parameters.<br>
- </div>
-<h4>Usage</h4>
-<div class="code"> <b>BOOST_PP_OVERLOAD</b>(<i>prefix</i>,...) <a href="../topics/variadic_macros.html#VNotation" target="_self"><sup>(v)</sup></a><br>
- </div>
-<h4>Arguments</h4>
-<dl>
-<dt>prefix<br>
-</dt><dd>
-				The prefix of the non-variadic macro name.
-			</dd><dt>...<br>
-</dt><dd><i>
-				Variadic data</i>. The number of variadic data
-elements, as determined by BOOST_PP_VARIADIC_SIZE, is appended to the
-prefix to form the output non-variadic macro name.<br>
-</dd>
-</dl>
-<h4>Remarks</h4>
-<div> This macro creates a macro name which depends on the number of elements of variadic data. It should be used in the form of <br>
-BOOST_PP_OVERLOAD(MACRO_NAME_,__VA_ARGS__)(__VA_ARGS__) in order to
-call a non-variadic macro taking a given number of variadic data
-elements as non-variadic arguments. In this way one can invoke a
-variadic macro with a variable number of parameters which calls one of
-a series of non-variadic macros doing very similar things.
-</div><b>Requirements</b>
-<div> <b>Header:</b> &nbsp;<a href="../headers/facilities/overload.html">&lt;boost/preprocessor/facilities/overload.hpp&gt;</a>
+    <div  style="margin-left: 0px;"> The <b>BOOST_PP_OVERLOAD</b> variadic
+      macro expands to the name of a non-variadic macro having a given number of
+      parameters.<br>
+    </div>
+    <h4>Usage</h4>
+    <div  class="code"> <b>BOOST_PP_OVERLOAD</b>(<i>prefix</i>,...) <a  href="../topics/variadic_macros.html#VNotation"
+         target="_self"><sup>(v)</sup></a><br>
+    </div>
+    <h4>Arguments</h4>
+    <dl>
+      <dt>prefix<br>
+      </dt>
+      <dd> The prefix of the non-variadic macro name. </dd>
+      <dt>...<br>
+      </dt>
+      <dd><i> Variadic data</i>. The number of variadic data
+        elements, as determined by BOOST_PP_VARIADIC_SIZE, is appended to the
+        prefix to form the output non-variadic macro name.<br>
+      </dd>
+    </dl>
+    <h4>Remarks</h4>
+    <div> This macro creates a macro name which depends on the number of
+      elements of variadic data. It should be used in the form of <br>
+      BOOST_PP_OVERLOAD(MACRO_NAME_,__VA_ARGS__)(__VA_ARGS__) in order to
+      call a non-variadic macro taking a given number of variadic data
+      elements as non-variadic arguments. In this way one can invoke a
+      variadic macro with a variable number of parameters which calls one of
+      a series of non-variadic macros doing very similar things.
+    </div>
+    <b>Requirements</b>
+    <div> <b>Header:</b> &nbsp;<a  href="../headers/facilities/overload.html">&lt;boost/preprocessor/facilities/overload.hpp&gt;</a>
+    </div>
+    <h4>Sample Code</h4>
+    <div>
+      <pre>#include &lt;<a  href="../headers/facilities/overload.html">boost/preprocessor/facilities/overload.hpp</a>&gt;<br>#include <<a
+ href="../headers/cat.html">boost/preprocessor/cat.hpp</a>><br>#include <<a  href="../headers/facilities/empty.html">boost/preprocessor/facilities/empty.hpp</a>><br>#include <<a
+ href="../headers/arithmetic/add.html">boost/preprocessor/arithmetic/add.hpp</a>><br><br>#define MACRO_1(number) MACRO_2(number,10)<br>#define MACRO_2(number1,number2) <a
+ href="add.html">BOOST_PP_ADD</a>(number1,number2)<br><br>#if !BOOST_PP_VARIADICS_MSVC<br><br>#define MACRO_ADD_NUMBERS(...) <a
+ href="overload.html">BOOST_PP_OVERLOAD</a>(MACRO_,__VA_ARGS__)(__VA_ARGS__)<br><br>#else<br><br>// or for Visual C++<br><br>#define MACRO_ADD_NUMBERS(...) \<br>  <a
+ href="cat.html">BOOST_PP_CAT</a>(<a  href="overload.html">BOOST_PP_OVERLOAD</a>(MACRO_,__VA_ARGS__)(__VA_ARGS__),<a
+ href="empty.html">BOOST_PP_EMPTY</a>())<br><br>#endif<br><br>MACRO_ADD_NUMBERS(5) // output is 15<br>MACRO_ADD_NUMBERS(3,6) // output is 9</pre>
 </div>
-<h4>Sample Code</h4>
-<div>
-<pre>#include &lt;<a href="../headers/facilities/overload.html">boost/preprocessor/facilities/overload.hpp</a>&gt;<br>#include &lt;<a href="../headers/cat.html">boost/preprocessor/cat.hpp</a>&gt;<br>#include &lt;<a href="../headers/facilities/empty.html">boost/preprocessor/facilities/empty.hpp</a>&gt;<br>#include &lt;<a href="../headers/arithmetic/add.html">boost/preprocessor/arithmetic/add.hpp</a>&gt;<br><br>#define MACRO_1(number) MACRO_2(number,10)<br>#define MACRO_2(number1,number2) <a href="add.html">BOOST_PP_ADD</a>(number1,number2)<br><br>#define MACRO_ADD_NUMBERS(...) <a href="overload.html">BOOST_PP_OVERLOAD</a>(MACRO_,__VA_ARGS__)(__VA_ARGS__)<br><br>// or for Visual C++<br><br>#define MACRO_ADD_NUMBERS(...) \<br>  <a href="cat.html">BOOST_PP_CAT</a>(<a href="overload.html">BOOST_PP_OVERLOAD</a>(MACRO_,__VA_ARGS__)(__VA_ARGS__),<a href="empty.html">BOOST_PP_EMPTY</a>())<br><br>MACRO_ADD_NUMBERS(5) // output is 15<br>MACRO_ADD_NUMBERS(3,6) // output is 9<br></pre>
-</div>
-<hr size="1">
-<div style="margin-left: 0px;"> <i></i><i><EFBFBD> Copyright Edward Diener 2011,2013</i> </div>
-<div style="margin-left: 0px;">
+<hr  size="1">
+<div  style="margin-left: 0px;"> <i></i><i><EFBFBD> Copyright Edward Diener 2011,2013,2016</i> </div>
+<div  style="margin-left: 0px;">
 <p><small>Distributed under the Boost Software License, Version 1.0.
-(See accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a>
-or copy at <a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
+(See accompanying file <a  href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a>
+or copy at <a  href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
 </div>
-  </body>
-</html>
+  
+</body></html>
--- a/doc/title.html
+++ b/doc/title.html
@ -12,7 +12,7 @@
      may be used as a standalone library. </div>
    <div> An excerpt from <i>C++ Template Metaprogramming: Concepts, Tools, and
        Techniques from Boost and Beyond</i> by Dave Abrahams and Aleksey
-      Gurtovoy has been made <a href="Appendix%20A%20%C2%A0%20An%20Introduction%20to%20Preprocessor%20Metaprogramming.html"
+      Gurtovoy has been made <a href="AppendixA-AnIntroductiontoPreprocessorMetaprogramming.html"
        target="_top"><font color="blue"><b><u><i>available</i></u></b></font></a>.
      This excerpt contains a basic introduction to the Preprocessor library and
      preprocessor metaprogramming which may help users new to the library and
--- a/doc/topics/variadic_macros.html
+++ b/doc/topics/variadic_macros.html
@ -1,40 +1,37 @@
 <html>
  <head>
+    <meta  content="text/html; charset=windows-1252"  http-equiv="content-type">
    <title>variadic_macros.html</title>
-    <link rel="stylesheet" type="text/css" href="../styles.css">
+    <link  rel="stylesheet"  type="text/css"  href="../styles.css">
    <style>
    u { font-weight: normal; text-decoration: none; }
    </style>
  </head>
  <body>
    <h4>Variadic Macros</h4>
-    <div> Variadic macros are supported by a number of compilers.
-      They are
-      macros of the form:
-    </div>
-    <div class="code">
+    <div> Variadic macros are supported by a number of compilers. They are
+      macros of the form: </div>
+    <div  class="code">
      <pre>#define SOME_MACRO(ZeroOrMoreParameters,...) macro expansion possible specifying __VA_ARGS__</pre>
    </div>
-    <div> The '...' in the parameter list represents the variadic
-      data when the macro is invoked and the __VA_ARGS__ in the expansion
-      represents the variadic data in the expansion of the macro. Variadic
-      data is of the form of 1 or more preprocessor tokens separated by
-      commas.<br>
+    <div> The '...' in the parameter list represents the variadic data when the
+      macro is invoked and the __VA_ARGS__ in the expansion represents the
+      variadic data in the expansion of the macro. Variadic data is of the form
+      of 1 or more preprocessor tokens separated by commas.<br>
      <br>
-      The '...' must be the last parameter in the macro definition and there
-      may be 0 or more non-variadic parameters preceding it.<br>
+      The '...' must be the last parameter in the macro definition and there may
+      be 0 or more non-variadic parameters preceding it.<br>
      <br>
-      In the expansion of the macro __VA_ARGS__ may be specified 0 or more
-      times to represent the variadic data. The variadic data in the
-      expansion is a comma separated list of preprocessor tokens representing
-      the variadic data which the invoker of the macro enters as the last
-      arguments to the macro.<br>
+      In the expansion of the macro __VA_ARGS__ may be specified 0 or more times
+      to represent the variadic data. The variadic data in the expansion is a
+      comma separated list of preprocessor tokens representing the variadic data
+      which the invoker of the macro enters as the last arguments to the macro.<br>
    </div>
    <h4>Example<u> - Creating and invoking a variadic macro.</u></h4>
-    <div class="code">
+    <div  class="code">
      <pre>#define INITIALIZE_INT_ARRAY(array_name,...) \ <br> static int array_name[] = { __VA_ARGS__ }; \ <br> /**/<br><br> INITIALIZE_INT_ARRAY(myname,45,789,33510,9346,2)</pre>
    </div>
-    <u> <span style="font-weight: bold;">Preprocessor
+    <u> <span  style="font-weight: bold;">Preprocessor
        Library Support<br>
      </span></u>
    <div>The library offers support for variadic macros for those
@ -56,7 +53,15 @@
      When BOOST_PP_VARIADICS is 1, the library offers some extended
      functionality
      by using variadic macros, and also offers extended support for working
-      with variadic data.<br>
+      with variadic data.<br><br>
+      <a  name="vmvcquirk"></a>Visual C++ has a 
+      few quirks related to variadic macros which require the end-user to code
+      slightly differently. When BOOST_PP_VARIADICS is 1 and Visual C++ is the
+      compiler BOOST_PP_VARIADICS_MSVC is 1, else when BOOST_PP_VARIADICS is 1
+      and Visual C++ is not the compiler BOOST_PP_VARIADICS_MSVC is 0. When
+      BOOST_PP_VARIADICS is 0 then BOOST_PP_VARIADICS_MSVC is not defined.
+      In this way the end-user, when using variadic macros, can test for the
+      presence of Visual C++ as the compiler and code accordingly.<br>
      <br>
      Support for working with variadic
      data is largely centered on being able to convert variadic data to
@ -64,7 +69,7 @@
      functionality for working with those Boost preprocessor library data
      types is much greater than that for working with variadic data directly.<br>
    </div>
-    <a name="VNotation"></a>
+    <a  name="VNotation"></a>
    <h4>Notation For Variadic Macros<br>
    </h4>
    <div>In the documentation, headers which have variadic macros,
@ -131,7 +136,7 @@
      use this variadic data reliably as arguments to other macros, one needs
      variadic macro support.<br>
    </div>
-    <u style="font-weight: bold;"> Using a Tuple Instead of an Array<br>
+    <u  style="font-weight: bold;"> Using a Tuple Instead of an Array<br>
    </u>
    <div>An array as a preprocessor data type is a two-element tuple where the
      first element is the array size and the second element is a tuple which
@ -144,7 +149,7 @@
      type is essentially obsolete for conforming C++ compilers. Only if your
      compiler does not support variadic macros is the preprocessor array data
      type still useful.</div>
-    <u style="font-weight: bold;">Using Variadic Data</u>
+    <u  style="font-weight: bold;">Using Variadic Data</u>
    <div>Variadic data exists in the
      form of comma-separated preprocessor tokens. This is the case whether
      the variadic data comes from the __VA_ARGS__ of a variadic macro, from
@ -169,7 +174,7 @@
      variadic data as a whole to variadic macros as the last parameter of
      the macro. However: <br>
      <br>
-      <span style="font-weight: bold;">Attempting to pass
+      <span  style="font-weight: bold;">Attempting to pass
        variadic data as a
        whole directly into a non-variadic macro is not guaranteed to work and
        may fail.<br>
@ -178,7 +183,7 @@
      of compilers, currently most notably Visual C++. Even passing variadic
      data as arguments to a non-variadic macro, when it is not represented
      in
-      the form of&nbsp; __VA_ARGS__, may fail with certain compilers.<br>
+      the form of<EFBFBD> __VA_ARGS__, may fail with certain compilers.<br>
      <br>
      What follows are very simple examples, showing how variadic data can be
      passed to a non-variadic macro.<br>
@ -188,9 +193,9 @@
    <h4>Example<u> - Passing variadic data as a whole to a
        non-variadic
        macro. DO NOT DO.</u></h4>
-    <div class="code">
+    <div  class="code">
      <pre>#define MACRO_ARG_2(x,y) BOOST_PP_ADD(x,y)<br>#define VAR_MACRO(...) __VA_ARGS__<br><br>/* The following should not be done and is not guaranteed to work with compilers. */<br><br><span
-style="font-weight: bold;"><span style="font-family: monospace;"></span></span>int xx = MACRO_ARG_2(VAR_MACRO(2,3));</pre>
+ style="font-weight: bold;"><span  style="font-family: monospace;"></span></span>int xx = MACRO_ARG_2(VAR_MACRO(2,3));</pre>
    </div>
    <div> There are two ways to pass variadic data to a non-variadic
      macro.
@ -203,7 +208,7 @@ style="font-weight: bold;"><span style="font-family: monospace;"></span></span>i
        a
        non-variadic macro.<br>
      </u></h4>
-    <div class="code">
+    <div  class="code">
      <pre>#define MACRO_ARG_2(x,y) BOOST_PP_ADD(x,y)<br>#define VAR_MACRO(...) __VA_ARGS__<br><br>/* The following will work correctly */<br><br>int xx = MACRO_ARG_2<br> (<br> BOOST_PP_VARIADIC_ELEM(0,VAR_MACRO(2,3)),<br> BOOST_PP_VARIADIC_ELEM(1,VAR_MACRO(2,3))<br> );</pre>
    </div>
    <div>The second way is to use a macro in the library called
@ -215,7 +220,7 @@ style="font-weight: bold;"><span style="font-family: monospace;"></span></span>i
        BOOST_PP_OVERLOAD
        and on to a non-variadic macro.<br>
      </u></h4>
-    <div class="code">
+    <div  class="code">
      <pre>#define MACRO_ARG_2(x,y) BOOST_PP_ADD(x,y)<br>#define VAR_MACRO(...) __VA_ARGS__<br><br>/* The following will work correctly */<br><br>int xx = BOOST_PP_OVERLOAD(MACRO_ARG_,VAR_MACRO(2,3))(VAR_MACRO(2,3));<br><br>/* For Visual C++ it is necessary to do this */<br><br>int xx = <br>BOOST_PP_CAT(BOOST_PP_OVERLOAD(MACRO_ARG_,VAR_MACRO(2,3))(VAR_MACRO(2,3)),BOOST_PP_EMPTY());</pre>
    </div>
    <br>
@ -230,27 +235,28 @@ style="font-weight: bold;"><span style="font-family: monospace;"></span></span>i
    </div>
    <b>See</b> <b>Also</b><br>
    <ul>
-      <li><a href="../ref/variadics.html">BOOST_PP_VARIADICS</a></li>
-      <li><a href="../headers/tuple.html">Tuple Macros</a><br>
+      <li><a  href="../ref/variadics.html">BOOST_PP_VARIADICS</a></li>
+      <li><a  href="../headers/tuple.html">Tuple Macros</a><br>
      </li>
-      <li><a href="../headers/variadic.html">Variadic
+      <li><a  href="../headers/variadic.html">Variadic
          Macros<br>
        </a></li>
-      <li><a href="../ref/array_enum.html">BOOST_PP_ARRAY_ENUM</a></li>
-      <li><a href="../ref/list_enum_r.html">BOOST_PP_LIST_ENUM</a></li>
-      <li><a href="../ref/seq_enum.html">BOOST_PP_SEQ_ENUM</a></li>
-      <li><a href="../ref/tuple_enum.html">BOOST_PP_TUPLE_ENUM</a></li>
-      <li><a href="../ref/overload.html">BOOST_PP_OVERLOAD</a></li>
+      <li><a  href="../ref/array_enum.html">BOOST_PP_ARRAY_ENUM</a></li>
+      <li><a  href="../ref/list_enum_r.html">BOOST_PP_LIST_ENUM</a></li>
+      <li><a  href="../ref/seq_enum.html">BOOST_PP_SEQ_ENUM</a></li>
+      <li><a  href="../ref/tuple_enum.html">BOOST_PP_TUPLE_ENUM</a></li>
+      <li><a  href="../ref/overload.html">BOOST_PP_OVERLOAD</a></li>
    </ul>
-    <hr size="1">
-    <div style="margin-left: 0px;"> <i><EFBFBD> Copyright
+    <hr  size="1">
+    <div  style="margin-left: 0px;"> <i><EFBFBD> Copyright
        Edward Diener
-        2011,2013</i> </div>
-    <div style="margin-left: 0px;">
+        2011,2013,2016</i> </div>
+    <div  style="margin-left: 0px;">
      <p><small>Distributed under the Boost Software License,
          Version 1.0.
-          (See accompanying file <a href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a>
-          or copy at <a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
+          (See accompanying file <a  href="../../../../LICENSE_1_0.txt">LICENSE_1_0.txt</a>
+          or copy at <a  href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</small></p>
    </div>
-  </body>
-</html>
+  
+
+</body></html>
--- a/include/boost/preprocessor/config/config.hpp
+++ b/include/boost/preprocessor/config/config.hpp
@ -73,7 +73,7 @@
 # define BOOST_PP_VARIADICS_MSVC 0
 # if !defined BOOST_PP_VARIADICS
 #    /* variadic support explicitly disabled for all untested compilers */
-#    if defined __GCCXML__ || defined __CUDACC__ || defined __PATHSCALE__ || defined __DMC__ || defined __CODEGEARC__ || defined __BORLANDC__ || defined __MWERKS__ || ( defined __SUNPRO_CC && __SUNPRO_CC < 0x5130 ) || defined __HP_aCC && !defined __EDG__ || defined __MRC__ || defined __SC__ || defined __IBMCPP__ || defined __PGI
+#    if defined __GCCXML__ || defined __CUDACC__ || defined __PATHSCALE__ || defined __DMC__ || defined __CODEGEARC__ || defined __BORLANDC__ || defined __MWERKS__ || ( defined __SUNPRO_CC && __SUNPRO_CC < 0x5120 ) || defined __HP_aCC && !defined __EDG__ || defined __MRC__ || defined __SC__ || defined __IBMCPP__ || defined __PGI
 #        define BOOST_PP_VARIADICS 0
 #    /* VC++ (C/C++) */
 #    elif defined _MSC_VER && _MSC_VER >= 1400 && (!defined __EDG__ || defined(__INTELLISENSE__)) && !defined __clang__
--- a/include/boost/preprocessor/facilities/identity.hpp
+++ b/include/boost/preprocessor/facilities/identity.hpp
@ -8,6 +8,7 @@
 #  */
 #
 # /* Revised by Paul Mensonides (2002) */
+# /* Revised by Edward Diener (2015) */
 #
 # /* See http://www.boost.org for most recent version. */
 #
@ -15,9 +16,12 @@
 # define BOOST_PREPROCESSOR_FACILITIES_IDENTITY_HPP
 #
 # include <boost/preprocessor/facilities/empty.hpp>
+# include <boost/preprocessor/tuple/eat.hpp>
 #
 # /* BOOST_PP_IDENTITY */
 #
 # define BOOST_PP_IDENTITY(item) item BOOST_PP_EMPTY
 #
+# define BOOST_PP_IDENTITY_N(item,n) item BOOST_PP_TUPLE_EAT_N(n)
+#
 # endif
--- a/include/boost/preprocessor/tuple/eat.hpp
+++ b/include/boost/preprocessor/tuple/eat.hpp
@ -8,7 +8,7 @@
 #  */
 #
 # /* Revised by Paul Mensonides (2002-2011) */
-# /* Revised by Edward Diener (2011) */
+# /* Revised by Edward Diener (2011,2015) */
 #
 # /* See http://www.boost.org for most recent version. */
 #
@ -38,6 +38,15 @@
 #    endif
 #    define BOOST_PP_TUPLE_EAT_I(size) BOOST_PP_TUPLE_EAT_ ## size
 # endif
+#
+# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
+#     define BOOST_PP_TUPLE_EAT_N(size) BOOST_PP_TUPLE_EAT_N_I(size)
+# else
+#     define BOOST_PP_TUPLE_EAT_N(size) BOOST_PP_TUPLE_EAT_N_OO((size))
+#     define BOOST_PP_TUPLE_EAT_N_OO(par) BOOST_PP_TUPLE_EAT_N_I ## par
+# endif
+# define BOOST_PP_TUPLE_EAT_N_I(size) BOOST_PP_TUPLE_EAT_ ## size
+#
 # define BOOST_PP_TUPLE_EAT_1(e0)
 # define BOOST_PP_TUPLE_EAT_2(e0, e1)
 # define BOOST_PP_TUPLE_EAT_3(e0, e1, e2)
--- a/test/facilities.cxx
+++ b/test/facilities.cxx
@ -26,6 +26,7 @@ BEGIN BOOST_PP_APPLY((BOOST_PP_EMPTY))() 0 == 0 END
 BEGIN BOOST_PP_EXPAND(MACRO ARGS) == 1 END

 BEGIN BOOST_PP_IDENTITY(1)() == 1 END
+BEGIN BOOST_PP_IDENTITY_N(36,10)(0,1,2,3,4,5,6,7,8,9) == 36 END

 BEGIN BOOST_PP_CAT(BOOST_PP_INTERCEPT, 2) 1 == 1 END
Author	SHA1	Message	Date
Edward Diener	c2beb74b90	Updated for VC++ quirks and overload code example.	2016-04-14 08:52:06 -04:00
Edward Diener	3292532517	Merge branch 'master' into develop	2015-10-16 18:47:02 -04:00
Edward Diener	4e29a160b9	Merge branch 'develop'	2015-10-14 22:36:27 -04:00
Edward Diener	b1be22cf77	Merge pull request #8 from mgaunard/patch-1 lower version requirement for SunCC and variadics	2015-10-08 11:34:04 -04:00
Mathias Gaunard	f59d83b8bf	lower version requirement for SunCC and variadics Macro variadics appear to work fine with SunCC 5.12.	2015-10-08 11:31:27 +01:00
Edward Diener	88c4282493	Fixed leaving off first letter of word in doc.	2015-09-21 10:53:10 -07:00
Edward Diener	02ab183b96	Added documentation for identity_n macro.	2015-09-13 13:21:57 -04:00
Edward Diener	735e301c46	Added BOOST_PP_IDENTITY_N functionality with test.	2015-09-12 19:53:59 -04:00
Edward Diener	e983c16e61	Merge branch 'develop'	2015-08-27 21:21:19 -04:00
Edward Diener	132eb67cec	Remove spaces in the filename for AppendixA.	2015-08-21 16:38:12 -04:00
Edward Diener	4c39e92496	Merge branch 'develop'	2015-08-21 09:28:34 -04:00
Edward Diener	2689b91d91	Merge pull request #6 from teeks99/unicode_name2 Removed weird unicode character from filename and links	2015-08-17 13:27:17 -04:00
Thomas Kent	478bb6e10e	Removed weird unicode character from filename and links	2015-08-14 17:39:42 -05:00
Edward Diener	3f97464c27	Added needed include.	2015-07-17 07:16:11 -04:00