Imported from /home/lorry/working-area/delta_boost-tarball/boost_1_58_0.tar.bz2.HEADboost_1_58_0master

31 files changed, 671 insertions, 63 deletions

diff --git a/libs/predef/build.jam b/libs/predef/build.jam
index aac15589c..5ee09afe2 100644
--- a/libs/predef/build.jam
+++ b/libs/predef/build.jam
@@ -3,7 +3,4 @@
 # (See accompanying file LICENSE_1_0.txt or copy at
 # http://www.boost.org/LICENSE_1_0.txt)
 
-project predef
-    ;
-
 path-constant BOOST_PREDEF_ROOT : . ;
diff --git a/libs/predef/check/build.jam b/libs/predef/check/build.jam
new file mode 100644
index 000000000..1ce4f11e9
--- /dev/null
+++ b/libs/predef/check/build.jam
@@ -0,0 +1,9 @@
+# Copyright Rene Rivera 2015
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+exe predef_check_as_c : predef_check_as_c.c : <include>../include ;
+exe predef_check_as_cpp : predef_check_as_cpp.cpp : <include>../include ;
+exe predef_check_as_objc : predef_check_as_objc.m : <include>../include ;
+exe predef_check_as_objcpp : predef_check_as_objcpp.mm : <include>../include ;
diff --git a/libs/predef/check/predef.jam b/libs/predef/check/predef.jam
new file mode 100644
index 000000000..0638703a0
--- /dev/null
+++ b/libs/predef/check/predef.jam
@@ -0,0 +1,106 @@
+# Copyright Rene Rivera 2015
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+# Defines rules that provide requirements based on checking
+# conditions using Boost Predef definitions and version numbers.
+
+import modules ;
+import project ;
+import feature ;
+import string ;
+import toolset ;
+import modules ;
+import path ;
+
+# Create a project for our targets.
+project.extension predef check ;
+
+# Feature to pass check expressions to check programs.
+feature.feature predef-expression : : free ;
+
+# Check programs. Each needs to be compiled for different languages
+# even though they are all the same source code.
+local rule check_target ( language : ext )
+{
+    # Need to use absolute paths because we don't know the
+    # context of the invocation which affects where the paths
+    # originate from.
+    local predef_jam
+        = [ modules.binding $(__name__) ] ;
+        local source_path
+            = $(predef_jam:D)/predef_check_as_$(language).$(ext) ;
+        local include_path
+            = $(predef_jam:D)/../include ;
+        _check_exe_($(language)) = [
+            exe predef_check_as_$(language)
+                : $(source_path)
+                : <include>$(include_path) ] ;
+    explicit predef_check_as_$(language) ;
+}
+check_target c : c ;
+check_target cpp : cpp ;
+check_target objc : m ;
+check_target objcpp : mm ;
+
+# Checks the expressions and when used evaluates to the true-properties
+# if the expressions are all true. Otherwise evaluates to the
+# false-properties.
+rule check ( expressions + : language ? : true-properties * : false-properties * )
+{
+    # Default to C++ on the check context.
+    language ?= cpp ;
+    
+    local project_target = [ project.target $(__name__) ] ;
+	project.push-current $(project_target) ;
+    local result ;
+    for expression in $(expressions)
+    {
+        # The check program to use.
+        local exe_target = [ $(_check_exe_($(language))).name ] ;
+        exe_target = /check/predef//$(exe_target) ;
+        
+        # Create the check run if we don't have one yet.
+        local key = [ MD5 $(language)::$(expression) ] ;
+        if ! ( $(key) in $(_checks_) )
+        {
+            _checks_ += $(key) ;
+            make
+                $(key).txt :
+                $(exe_target) :
+                @$(__name__).predef_check_action :
+                <predef-expression>$(expression) ;
+            explicit
+                $(key).txt ;
+        }
+        
+        local check_target = [ check-target-builds
+            /check/predef//$(key).txt $(expression)
+            : $(true-properties)
+            : $(false-properties) ] ;
+        
+        result += $(check_target) ;
+    }
+	project.pop-current ;
+    return $(result) ;
+}
+
+# Checks the expressions and when used evaluates to <build>no
+# if the expressions are all false. Otherwise evaluates to the
+# nothing.
+rule require ( expressions + : language ? )
+{
+    return [ check $(expressions) : $(language) : : <build>no ] ;
+}
+
+rule predef_check_action ( targets + : sources + : props * )
+{
+    PREDEF_CHECK_EXPRESSION on $(targets)
+        = [ feature.get-values <predef-expression> : $(props) ] ;
+}
+
+actions predef_check_action bind PREDEF_CHECK_EXPRESSION
+{
+    $(>) "$(PREDEF_CHECK_EXPRESSION)" > $(<)
+}
diff --git a/libs/predef/check/predef_check_as_c.c b/libs/predef/check/predef_check_as_c.c
new file mode 100644
index 000000000..dcb7d6aa3
--- /dev/null
+++ b/libs/predef/check/predef_check_as_c.c
@@ -0,0 +1,119 @@
+/*
+Copyright Rene Rivera 2011-2015
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE_1_0.txt or copy at
+http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define BOOST_PREDEF_INTERNAL_GENERATE_TESTS
+
+typedef struct predef_info
+{
+    unsigned tag;
+    const char * name;
+    const char * description;
+    unsigned value;
+} predef_info;
+
+predef_info first_predef_info = { 0x43210DEF , "-" , "-" , 0xFFFFFFFF };
+
+#define BOOST_PREDEF_DECLARE_TEST(x,s) \
+    predef_info x##_predef_info = { 0x67890DEF , #x , s , x };
+#include <boost/predef.h>
+
+predef_info last_predef_info = { 0xFFFFFFFF , "-" , "-" , 0x43210DEF };
+
+int predef_info_compare(const void * a, const void * b)
+{
+    const predef_info ** i = (const predef_info **)a;
+    const predef_info ** j = (const predef_info **)b;
+    return strcmp((*i)->name,(*j)->name);
+}
+
+const char * str_token(const char ** str, const char * space)
+{
+    unsigned span;
+    char * token;
+    for (; **str != 0; *str += 1)
+    {
+        if (0 == strchr(space, **str))
+        {
+            break;
+        }
+    }
+    span = strcspn(*str, space);
+    token = (char *)malloc(span+1);
+    strncpy(token, *str, span);
+    token[span] = 0;
+    for (*str += span; **str != 0; *str += 1)
+    {
+        if (0 == strchr(space, **str))
+        {
+            break;
+        }
+    }
+    return token;
+}
+
+const char * whitespace = " ";
+const char * dot = ".";
+
+int main(int argc, const char ** argv)
+{
+    unsigned x = 0;
+    int argi = 1;
+    predef_info ** predefs = 0;
+    unsigned predef_count = 0;
+    unsigned * i = &first_predef_info.tag;
+    unsigned * e = &last_predef_info.tag;
+    while (i < e)
+    {
+        i += 1;
+        if (*i == 0x67890DEF)
+        {
+            predef_count += 1;
+            predefs = (predef_info**)realloc(predefs,predef_count*sizeof(predef_info*));
+            predefs[predef_count-1] = (predef_info*)i;
+        }
+    }
+    qsort(predefs,predef_count,sizeof(predef_info*),predef_info_compare);
+    for (argi = 1; argi < argc; ++argi)
+    {
+        const char * exp = argv[argi];
+        const char * exp_name = str_token(&exp, whitespace);
+        const char * exp_op = str_token(&exp, whitespace);
+        const char * exp_val = str_token(&exp, whitespace);
+        unsigned exp_version = 0;
+        if (*exp_val != 0)
+        {
+            exp = exp_val;
+            const char * exp_val_a = str_token(&exp, dot);
+            const char * exp_val_b = str_token(&exp, dot);
+            const char * exp_val_c = str_token(&exp, dot);
+            exp_version = BOOST_VERSION_NUMBER(atoi(exp_val_a), atoi(exp_val_b),atoi(exp_val_c));
+        }
+        for (x = 0; x < predef_count; ++x)
+        {
+            if (*exp_op == 0 &&
+                predefs[x]->value == 0 &&
+                strcmp(exp_name, predefs[x]->name) == 0)
+            {
+                return argi;
+            }
+            else if (*exp_op != 0 && *exp_val != 0 &&
+                     strcmp(exp_name, predefs[x]->name) == 0)
+            {
+                if (0 == strcmp(">",exp_op) && !(predefs[x]->value > exp_version)) return argi;
+                if (0 == strcmp("<",exp_op) && !(predefs[x]->value < exp_version)) return argi;
+                if (0 == strcmp(">=",exp_op) && !(predefs[x]->value >= exp_version)) return argi;
+                if (0 == strcmp("<=",exp_op) && !(predefs[x]->value <= exp_version)) return argi;
+                if (0 == strcmp("==",exp_op) && !(predefs[x]->value == exp_version)) return argi;
+                if (0 == strcmp("!=",exp_op) && !(predefs[x]->value != exp_version)) return argi;
+            }
+        }
+    }
+    return 0;
+}
diff --git a/libs/predef/check/predef_check_as_cpp.cpp b/libs/predef/check/predef_check_as_cpp.cpp
new file mode 100644
index 000000000..c58abe7a1
--- /dev/null
+++ b/libs/predef/check/predef_check_as_cpp.cpp
@@ -0,0 +1 @@
+#include "predef_check_as_c.c"
diff --git a/libs/predef/check/predef_check_as_objc.m b/libs/predef/check/predef_check_as_objc.m
new file mode 100644
index 000000000..c58abe7a1
--- /dev/null
+++ b/libs/predef/check/predef_check_as_objc.m
@@ -0,0 +1 @@
+#include "predef_check_as_c.c"
diff --git a/libs/predef/check/predef_check_as_objcpp.mm b/libs/predef/check/predef_check_as_objcpp.mm
new file mode 100644
index 000000000..c58abe7a1
--- /dev/null
+++ b/libs/predef/check/predef_check_as_objcpp.mm
@@ -0,0 +1 @@
+#include "predef_check_as_c.c"
diff --git a/libs/predef/doc/history.qbk b/libs/predef/doc/history.qbk
index b2fb81e12..5df5bf18d 100644
--- a/libs/predef/doc/history.qbk
+++ b/libs/predef/doc/history.qbk
@@ -1,5 +1,5 @@
 [/
-Copyright 2014 Rene Rivera
+Copyright 2014-2015 Rene Rivera
 Distributed under the Boost Software License, Version 1.0.
 (See accompanying file LICENSE_1_0.txt or copy at
 http://www.boost.org/LICENSE_1_0.txt)
@@ -7,12 +7,22 @@ http://www.boost.org/LICENSE_1_0.txt)
 
 [section History]
 
+[heading 1.2]
+
+* Account for skip in Visual Studio product version vs. compiler version.
+  This supports version of VS 2015 an onward.
+* Add detection of Haiku OS (from Jessica Hamilton).
+* Some fixes to endian detection for Android (from mstahl-at-redhat.com).
+* Add missing `BOOST_PREDEF_MAKE_0X_VVRRPP` macro (from Erik Lindahl).
+* Add `predef_check` program and BBv2 integration for build configuration
+  checks.
+
 [heading 1.1]
 
 * Addition of `BOOST_PLAT_*` platform definitions for MinGW and
   Windows platform variants.
 * Detection of ARM architecture for Windows compilers to target
-  mobile devices of WIndows 8.
+  mobile devices of Windows 8.
 * Improved ARM detection for 64 bit ARM.
 * Added detection of iOS an an operating system.
 * Improved detection of endianess on some platforms.
diff --git a/libs/predef/doc/html/index.html b/libs/predef/doc/html/index.html
index 024453d80..8a4dde7e1 100644
--- a/libs/predef/doc/html/index.html
+++ b/libs/predef/doc/html/index.html
@@ -1,10 +1,10 @@
 <html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
-<title>Predef 1.1</title>
+<title>Predef 1.2</title>
 <link rel="stylesheet" href="boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
-<link rel="home" href="index.html" title="Predef 1.1">
+<link rel="home" href="index.html" title="Predef 1.2">
 <link rel="next" href="predef/introduction.html" title="Introduction">
 </head>
 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
@@ -13,7 +13,7 @@
 <div class="titlepage">
 <div>
 <div><h2 class="title">
-<a name="predef"></a>Predef 1.1</h2></div>
+<a name="predef"></a>Predef 1.2</h2></div>
 <div><div class="authorgroup"><div class="author"><h3 class="author">
 <span class="firstname">Rene</span> <span class="surname">Rivera</span>
 </h3></div></div></div>
@@ -45,6 +45,7 @@
 <dt><span class="section"><a href="predef/reference/version_definition_macros.html">Version definition
       macros</a></span></dt>
 </dl></dd>
+<dt><span class="section"><a href="predef/check_utilities.html">Check Utilities</a></span></dt>
 <dt><span class="section"><a href="predef/history.html">History</a></span></dt>
 <dt><span class="section"><a href="predef/to_do.html">To Do</a></span></dt>
 <dt><span class="section"><a href="predef/acknoledgements.html">Acknoledgements</a></span></dt>
@@ -52,7 +53,7 @@
 </div>
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
-<td align="left"><p><small>Last revised: June 04, 2014 at 03:28:01 GMT</small></p></td>
+<td align="left"><p><small>Last revised: January 29, 2015 at 21:39:36 GMT</small></p></td>
 <td align="right"><div class="copyright-footer"></div></td>
 </tr></table>
 <hr>
diff --git a/libs/predef/doc/html/predef/acknoledgements.html b/libs/predef/doc/html/predef/acknoledgements.html
index 7573714ac..9f73605b1 100644
--- a/libs/predef/doc/html/predef/acknoledgements.html
+++ b/libs/predef/doc/html/predef/acknoledgements.html
@@ -4,8 +4,8 @@
 <title>Acknoledgements</title>
 <link rel="stylesheet" href="../boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
-<link rel="home" href="../index.html" title="Predef 1.1">
-<link rel="up" href="../index.html" title="Predef 1.1">
+<link rel="home" href="../index.html" title="Predef 1.2">
+<link rel="up" href="../index.html" title="Predef 1.2">
 <link rel="prev" href="to_do.html" title="To Do">
 </head>
 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
diff --git a/libs/predef/doc/html/predef/adding_new_predefs.html b/libs/predef/doc/html/predef/adding_new_predefs.html
index 091b7b7f3..37f49d454 100644
--- a/libs/predef/doc/html/predef/adding_new_predefs.html
+++ b/libs/predef/doc/html/predef/adding_new_predefs.html
@@ -4,8 +4,8 @@
 <title>Adding new predefs</title>
 <link rel="stylesheet" href="../boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
-<link rel="home" href="../index.html" title="Predef 1.1">
-<link rel="up" href="../index.html" title="Predef 1.1">
+<link rel="home" href="../index.html" title="Predef 1.2">
+<link rel="up" href="../index.html" title="Predef 1.2">
 <link rel="prev" href="using_the_predefs.html" title="Using the predefs">
 <link rel="next" href="reference.html" title="Reference">
 </head>
diff --git a/libs/predef/doc/html/predef/check_utilities.html b/libs/predef/doc/html/predef/check_utilities.html
new file mode 100644
index 000000000..1664b197d
--- /dev/null
+++ b/libs/predef/doc/html/predef/check_utilities.html
@@ -0,0 +1,148 @@
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
+<title>Check Utilities</title>
+<link rel="stylesheet" href="../boostbook.css" type="text/css">
+<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
+<link rel="home" href="../index.html" title="Predef 1.2">
+<link rel="up" href="../index.html" title="Predef 1.2">
+<link rel="prev" href="reference/version_definition_macros.html" title="Version definition macros">
+<link rel="next" href="history.html" title="History">
+</head>
+<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
+<div class="spirit-nav">
+<a accesskey="p" href="reference/version_definition_macros.html"><img src="../images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../images/home.png" alt="Home"></a><a accesskey="n" href="history.html"><img src="../images/next.png" alt="Next"></a>
+</div>
+<div class="section">
+<div class="titlepage"><div><div><h2 class="title" style="clear: both">
+<a name="predef.check_utilities"></a><a class="link" href="check_utilities.html" title="Check Utilities">Check Utilities</a>
+</h2></div></div></div>
+<p>
+      The <code class="computeroutput"><span class="identifier">predef_check</span></code> utility provides
+      a facility for building a program that will check a given set of expressions
+      against the definitions it detected when it was built.
+    </p>
+<h4>
+<a name="predef.check_utilities.h0"></a>
+      <span class="phrase"><a name="predef.check_utilities.predef_check_programs"></a></span><a class="link" href="check_utilities.html#predef.check_utilities.predef_check_programs"><code class="literal">predef_check</code>
+      programs</a>
+    </h4>
+<p>
+      Even though there is only one <code class="computeroutput"><span class="identifier">predef_check</span></code>
+      program, there are variations for each of the languages that are detected by
+      Predef to match the convention for sources files. For all of them one invokes
+      with a list of expression arguments. The expressions are evaluated within the
+      context of the particular <code class="literal">predef_check</code> program and if they
+      all are true zero (0) is returned. Otherwise the index of the first false expression
+      is returned.
+    </p>
+<p>
+      The expression syntax is simple:
+    </p>
+<pre class="programlisting">predef-definition [ relational-operator version-value ]
+</pre>
+<p>
+      <em class="replaceable"><code>predef-definition</code></em> can be any of the Predef definitions.
+      For example <code class="computeroutput"><span class="identifier">BOOST_COMP_GCC</span></code>.
+    </p>
+<p>
+      <em class="replaceable"><code>relational-operator</code></em> can be any of: <code class="literal">&gt;</code>,
+      <code class="literal">&lt;</code>, <code class="literal">&gt;=</code>, <code class="literal">&lt;=</code>,
+      <code class="literal">==</code> and <code class="literal">!=</code>.
+    </p>
+<p>
+      <em class="replaceable"><code>version-number</code></em> can be a full or partial version
+      triplet value. If it's a partial version triple it is completed with zeros.
+      That is <code class="literal">x.y</code> is equivalent to <code class="literal">x.y.0</code> and
+      <code class="literal">x</code> is equivalent to <code class="literal">x.0.0</code>.
+    </p>
+<p>
+      The <em class="replaceable"><code>relations-operator</code></em> and <em class="replaceable"><code>version-number</code></em>
+      can be ommited. In which case it is equivalent to:
+    </p>
+<pre class="programlisting">predef-definition &gt; 0.0.0
+</pre>
+<h4>
+<a name="predef.check_utilities.h1"></a>
+      <span class="phrase"><a name="predef.check_utilities.using_with_boost_build"></a></span><a class="link" href="check_utilities.html#predef.check_utilities.using_with_boost_build">Using
+      with Boost.Build</a>
+    </h4>
+<p>
+      You can use the <code class="literal">predef_check</code> programs directly from Boost
+      Build to configure target requirements. This is useful for controlling what
+      gets built as part of your project based on the detailed version information
+      available in Predef. The basic use is simple:
+    </p>
+<pre class="programlisting">import path-to-predef-src/check/predef
+    : check require
+    : predef-check predef-require ;
+
+exe my_windows_program : windows_source.cpp
+    : [ predef-require "BOOST_OS_WINDOWS" ] ;
+</pre>
+<p>
+      That simple use case will skip building the <code class="literal">my_windows_program</code>
+      unless one is building for Windows. Like the direct <code class="literal">predef_check</code>
+      you can pass mutiple expressions using relational comparisons. For example:
+    </p>
+<pre class="programlisting">import path-to-predef-src/check/predef
+    : check require
+    : predef-check predef-require ;
+
+lib my_special_lib : source.cpp
+    : [ predef-require "BOOST_OS_WINDOWS != 0" "BOOST_OS_VMS != 0"] ;
+</pre>
+<p>
+      And in that case the <code class="literal">my_special_lib</code> is built only when the
+      OS is not Windows or VMS. The <code class="literal">requires</code> rule is a special
+      case of the <code class="literal">check</code> rule. And is defined in terms of it:
+    </p>
+<pre class="programlisting">rule require ( expressions + : language ? )
+{
+    return [ check $(expressions) : $(language) : : &lt;build&gt;no ] ;
+}
+</pre>
+<p>
+      You can use the <code class="literal">check</code> rule for more control and to implement
+      something other than control of what gets built. The definition for the <code class="literal">check</code>
+      rule is:
+    </p>
+<pre class="programlisting">rule check ( expressions + : language ? : true-properties * : false-properties * )
+</pre>
+<p>
+      When invoked as a reuirement of a Boost Build target this rule will add the
+      <code class="literal">true-properties</code> to the target if all the <code class="literal">expressions</code>
+      evaluate to true. Otherwise the <code class="literal">false-properties</code> get added
+      as requirements. For example you could use it to enable or disable features
+      in your programs:
+    </p>
+<pre class="programlisting">import path-to-predef-src/check/predef
+    : check require
+    : predef-check predef-require ;
+
+exe my_special_exe : source.cpp
+    : [ predef-check "BOOST_OS_WINDOWS == 0"
+        : &lt;define&gt;ENABLE_WMF=0
+        : &lt;define&gt;ENABLE_WMF=1 ] ;
+</pre>
+<p>
+      For both <code class="literal">check</code> and <code class="literal">require</code> the <code class="literal">language</code>
+      argument controls which variant of the <code class="literal">predef_check</code> program
+      is used to check the expressions. It defaults to "c++", but can be
+      any of: "c", "cpp", "objc", and "objcpp".
+    </p>
+</div>
+<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
+<td align="left"></td>
+<td align="right"><div class="copyright-footer">Copyright &#169; 2005, 2008-2014 Rene Rivera<p>
+        Distributed under the Boost Software License, Version 1.0. (See accompanying
+        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
+      </p>
+</div></td>
+</tr></table>
+<hr>
+<div class="spirit-nav">
+<a accesskey="p" href="reference/version_definition_macros.html"><img src="../images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../images/home.png" alt="Home"></a><a accesskey="n" href="history.html"><img src="../images/next.png" alt="Next"></a>
+</div>
+</body>
+</html>
diff --git a/libs/predef/doc/html/predef/history.html b/libs/predef/doc/html/predef/history.html
index 9d9a2efeb..883817d25 100644
--- a/libs/predef/doc/html/predef/history.html
+++ b/libs/predef/doc/html/predef/history.html
@@ -4,14 +4,14 @@
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-<link rel="home" href="../index.html" title="Predef 1.1">
-<link rel="up" href="../index.html" title="Predef 1.1">
-<link rel="prev" href="reference/version_definition_macros.html" title="Version definition macros">
+<link rel="home" href="../index.html" title="Predef 1.2">
+<link rel="up" href="../index.html" title="Predef 1.2">
+<link rel="prev" href="check_utilities.html" title="Check Utilities">
 <link rel="next" href="to_do.html" title="To Do">
 </head>
 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
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+<a accesskey="p" href="check_utilities.html"><img src="../images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../images/home.png" alt="Home"></a><a accesskey="n" href="to_do.html"><img src="../images/next.png" alt="Next"></a>
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
@@ -19,6 +19,30 @@
 </h2></div></div></div>
 <h4>
 <a name="predef.history.h0"></a>
+      <span class="phrase"><a name="predef.history.1_2"></a></span><a class="link" href="history.html#predef.history.1_2">1.2</a>
+    </h4>
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
+          Account for skip in Visual Studio product version vs. compiler version.
+          This supports version of VS 2015 an onward.
+        </li>
+<li class="listitem">
+          Add detection of Haiku OS (from Jessica Hamilton).
+        </li>
+<li class="listitem">
+          Some fixes to endian detection for Android (from mstahl-at-redhat.com).
+        </li>
+<li class="listitem">
+          Add missing <code class="computeroutput"><span class="identifier">BOOST_PREDEF_MAKE_0X_VVRRPP</span></code>
+          macro (from Erik Lindahl).
+        </li>
+<li class="listitem">
+          Add <code class="computeroutput"><span class="identifier">predef_check</span></code> program
+          and BBv2 integration for build configuration checks.
+        </li>
+</ul></div>
+<h4>
+<a name="predef.history.h1"></a>
       <span class="phrase"><a name="predef.history.1_1"></a></span><a class="link" href="history.html#predef.history.1_1">1.1</a>
     </h4>
 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
@@ -28,7 +52,7 @@
         </li>
 <li class="listitem">
           Detection of ARM architecture for Windows compilers to target mobile devices
-          of WIndows 8.
+          of Windows 8.
         </li>
 <li class="listitem">
           Improved ARM detection for 64 bit ARM.
@@ -68,7 +92,7 @@
 </tr></table>
 <hr>
 <div class="spirit-nav">
-<a accesskey="p" href="reference/version_definition_macros.html"><img src="../images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../images/home.png" alt="Home"></a><a accesskey="n" href="to_do.html"><img src="../images/next.png" alt="Next"></a>
+<a accesskey="p" href="check_utilities.html"><img src="../images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../images/home.png" alt="Home"></a><a accesskey="n" href="to_do.html"><img src="../images/next.png" alt="Next"></a>
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diff --git a/libs/predef/doc/html/predef/introduction.html b/libs/predef/doc/html/predef/introduction.html
index 66d39925f..ef085b03d 100644
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-<link rel="home" href="../index.html" title="Predef 1.1">
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-<link rel="prev" href="../index.html" title="Predef 1.1">
+<link rel="home" href="../index.html" title="Predef 1.2">
+<link rel="up" href="../index.html" title="Predef 1.2">
+<link rel="prev" href="../index.html" title="Predef 1.2">
 <link rel="next" href="using_the_predefs.html" title="Using the predefs">
 </head>
 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
diff --git a/libs/predef/doc/html/predef/reference.html b/libs/predef/doc/html/predef/reference.html
index c526fc518..9414b8f39 100644
--- a/libs/predef/doc/html/predef/reference.html
+++ b/libs/predef/doc/html/predef/reference.html
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-<link rel="home" href="../index.html" title="Predef 1.1">
-<link rel="up" href="../index.html" title="Predef 1.1">
+<link rel="home" href="../index.html" title="Predef 1.2">
+<link rel="up" href="../index.html" title="Predef 1.2">
 <link rel="prev" href="adding_new_predefs.html" title="Adding new predefs">
 <link rel="next" href="reference/boost_arch_architecture_macros.html" title="BOOST_ARCH architecture macros">
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index c790a496b..bd15acaec 100644
--- a/libs/predef/doc/html/predef/reference/boost_arch_architecture_macros.html
+++ b/libs/predef/doc/html/predef/reference/boost_arch_architecture_macros.html
@@ -4,7 +4,7 @@
 <title>BOOST_ARCH architecture macros</title>
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 <meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
-<link rel="home" href="../../index.html" title="Predef 1.1">
+<link rel="home" href="../../index.html" title="Predef 1.2">
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 <link rel="prev" href="../reference.html" title="Reference">
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diff --git a/libs/predef/doc/html/predef/reference/boost_comp_compiler_macros.html b/libs/predef/doc/html/predef/reference/boost_comp_compiler_macros.html
index ff590385f..3376fd0b9 100644
--- a/libs/predef/doc/html/predef/reference/boost_comp_compiler_macros.html
+++ b/libs/predef/doc/html/predef/reference/boost_comp_compiler_macros.html
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 <meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
-<link rel="home" href="../../index.html" title="Predef 1.1">
+<link rel="home" href="../../index.html" title="Predef 1.2">
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 <link rel="prev" href="boost_arch_architecture_macros.html" title="BOOST_ARCH architecture macros">
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diff --git a/libs/predef/doc/html/predef/reference/boost_lang_language_standards_ma.html b/libs/predef/doc/html/predef/reference/boost_lang_language_standards_ma.html
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-<link rel="home" href="../../index.html" title="Predef 1.1">
+<link rel="home" href="../../index.html" title="Predef 1.2">
 <link rel="up" href="../reference.html" title="Reference">
 <link rel="prev" href="boost_comp_compiler_macros.html" title="BOOST_COMP compiler macros">
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diff --git a/libs/predef/doc/html/predef/reference/boost_lib_library_macros.html b/libs/predef/doc/html/predef/reference/boost_lib_library_macros.html
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-<link rel="home" href="../../index.html" title="Predef 1.1">
+<link rel="home" href="../../index.html" title="Predef 1.2">
 <link rel="up" href="../reference.html" title="Reference">
 <link rel="prev" href="boost_lang_language_standards_ma.html" title="BOOST_LANG language standards macros">
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+<link rel="home" href="../../index.html" title="Predef 1.2">
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@@ -417,6 +417,44 @@
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 <h5>
 <a name="predef.reference.boost_os_operating_system_macros.h6"></a>
+        <span class="phrase"><a name="predef.reference.boost_os_operating_system_macros.boost_os_haiku"></a></span><a class="link" href="boost_os_operating_system_macros.html#predef.reference.boost_os_operating_system_macros.boost_os_haiku"><code class="computeroutput"><span class="identifier">BOOST_OS_HAIKU</span></code></a>
+      </h5>
+<p>
+        <a href="http://en.wikipedia.org/wiki/Haiku_(operating_system)" target="_top">Haiku</a>
+        operating system.
+      </p>
+<div class="informaltable"><table class="table">
+<colgroup>
+<col>
+<col>
+</colgroup>
+<thead><tr>
+<th>
+                <p>
+                  Symbol
+                </p>
+              </th>
+<th>
+                <p>
+                  Version
+                </p>
+              </th>
+</tr></thead>
+<tbody><tr>
+<td>
+                <p>
+                  <code class="computeroutput"><span class="identifier">__HAIKU__</span></code>
+                </p>
+              </td>
+<td>
+                <p>
+                  <span class="bold"><strong>detection</strong></span>
+                </p>
+              </td>
+</tr></tbody>
+</table></div>
+<h5>
+<a name="predef.reference.boost_os_operating_system_macros.h7"></a>
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       </h5>
 <p>
diff --git a/libs/predef/doc/html/predef/reference/boost_plat_platform_macros.html b/libs/predef/doc/html/predef/reference/boost_plat_platform_macros.html
index e554c77ef..9321e066e 100644
--- a/libs/predef/doc/html/predef/reference/boost_plat_platform_macros.html
+++ b/libs/predef/doc/html/predef/reference/boost_plat_platform_macros.html
@@ -4,7 +4,7 @@
 <title>BOOST_PLAT platform macros</title>
 <link rel="stylesheet" href="../../boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
-<link rel="home" href="../../index.html" title="Predef 1.1">
+<link rel="home" href="../../index.html" title="Predef 1.2">
 <link rel="up" href="../reference.html" title="Reference">
 <link rel="prev" href="boost_os_operating_system_macros.html" title="BOOST_OS operating system macros">
 <link rel="next" href="other_macros.html" title="Other macros">
diff --git a/libs/predef/doc/html/predef/reference/other_macros.html b/libs/predef/doc/html/predef/reference/other_macros.html
index b1e3f6fbf..802f689ed 100644
--- a/libs/predef/doc/html/predef/reference/other_macros.html
+++ b/libs/predef/doc/html/predef/reference/other_macros.html
@@ -4,7 +4,7 @@
 <title>Other macros</title>
 <link rel="stylesheet" href="../../boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
-<link rel="home" href="../../index.html" title="Predef 1.1">
+<link rel="home" href="../../index.html" title="Predef 1.2">
 <link rel="up" href="../reference.html" title="Reference">
 <link rel="prev" href="boost_plat_platform_macros.html" title="BOOST_PLAT platform macros">
 <link rel="next" href="version_definition_macros.html" title="Version definition macros">
diff --git a/libs/predef/doc/html/predef/reference/version_definition_macros.html b/libs/predef/doc/html/predef/reference/version_definition_macros.html
index c52ae4784..0451ca1d8 100644
--- a/libs/predef/doc/html/predef/reference/version_definition_macros.html
+++ b/libs/predef/doc/html/predef/reference/version_definition_macros.html
@@ -4,14 +4,14 @@
 <title>Version definition macros</title>
 <link rel="stylesheet" href="../../boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
-<link rel="home" href="../../index.html" title="Predef 1.1">
+<link rel="home" href="../../index.html" title="Predef 1.2">
 <link rel="up" href="../reference.html" title="Reference">
 <link rel="prev" href="other_macros.html" title="Other macros">
-<link rel="next" href="../history.html" title="History">
+<link rel="next" href="../check_utilities.html" title="Check Utilities">
 </head>
 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
 <div class="spirit-nav">
-<a accesskey="p" href="other_macros.html"><img src="../../images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../images/home.png" alt="Home"></a><a accesskey="n" href="../history.html"><img src="../../images/next.png" alt="Next"></a>
+<a accesskey="p" href="other_macros.html"><img src="../../images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../images/home.png" alt="Home"></a><a accesskey="n" href="../check_utilities.html"><img src="../../images/next.png" alt="Next"></a>
 </div>
 <div class="section">
 <div class="titlepage"><div><div><h3 class="title">
@@ -106,6 +106,9 @@
         <code class="computeroutput"><span class="identifier">BOOST_PREDEF_MAKE_0X_VRRPP000</span><span class="special">(</span><span class="identifier">V</span><span class="special">)</span></code>
       </p>
 <p>
+        <code class="computeroutput"><span class="identifier">BOOST_PREDEF_MAKE_0X_VVRRPP</span><span class="special">(</span><span class="identifier">V</span><span class="special">)</span></code>
+      </p>
+<p>
         <code class="computeroutput"><span class="identifier">BOOST_PREDEF_MAKE_10_VPPP</span><span class="special">(</span><span class="identifier">V</span><span class="special">)</span></code>
       </p>
 <p>
@@ -178,7 +181,7 @@
 </tr></table>
 <hr>
 <div class="spirit-nav">
-<a accesskey="p" href="other_macros.html"><img src="../../images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../images/home.png" alt="Home"></a><a accesskey="n" href="../history.html"><img src="../../images/next.png" alt="Next"></a>
+<a accesskey="p" href="other_macros.html"><img src="../../images/prev.png" alt="Prev"></a><a accesskey="u" href="../reference.html"><img src="../../images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../images/home.png" alt="Home"></a><a accesskey="n" href="../check_utilities.html"><img src="../../images/next.png" alt="Next"></a>
 </div>
 </body>
 </html>
diff --git a/libs/predef/doc/html/predef/to_do.html b/libs/predef/doc/html/predef/to_do.html
index 200e3ce96..7c011016e 100644
--- a/libs/predef/doc/html/predef/to_do.html
+++ b/libs/predef/doc/html/predef/to_do.html
@@ -4,8 +4,8 @@
 <title>To Do</title>
 <link rel="stylesheet" href="../boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
-<link rel="home" href="../index.html" title="Predef 1.1">
-<link rel="up" href="../index.html" title="Predef 1.1">
+<link rel="home" href="../index.html" title="Predef 1.2">
+<link rel="up" href="../index.html" title="Predef 1.2">
 <link rel="prev" href="history.html" title="History">
 <link rel="next" href="acknoledgements.html" title="Acknoledgements">
 </head>
@@ -17,9 +17,14 @@
 <div class="titlepage"><div><div><h2 class="title" style="clear: both">
 <a name="predef.to_do"></a><a class="link" href="to_do.html" title="To Do">To Do</a>
 </h2></div></div></div>
-<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
+<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
+<li class="listitem">
           Improve reference documentation.
-        </li></ul></div>
+        </li>
+<li class="listitem">
+          Provide BOOST_WORKAROUND style macros for public use.
+        </li>
+</ul></div>
 </div>
 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 <td align="left"></td>
diff --git a/libs/predef/doc/html/predef/using_the_predefs.html b/libs/predef/doc/html/predef/using_the_predefs.html
index 7ce9d04d6..c659ce6ea 100644
--- a/libs/predef/doc/html/predef/using_the_predefs.html
+++ b/libs/predef/doc/html/predef/using_the_predefs.html
@@ -4,8 +4,8 @@
 <title>Using the predefs</title>
 <link rel="stylesheet" href="../boostbook.css" type="text/css">
 <meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
-<link rel="home" href="../index.html" title="Predef 1.1">
-<link rel="up" href="../index.html" title="Predef 1.1">
+<link rel="home" href="../index.html" title="Predef 1.2">
+<link rel="up" href="../index.html" title="Predef 1.2">
 <link rel="prev" href="introduction.html" title="Introduction">
 <link rel="next" href="adding_new_predefs.html" title="Adding new predefs">
 </head>
diff --git a/libs/predef/doc/predef.qbk b/libs/predef/doc/predef.qbk
index 75ec39d3f..07807cd2d 100644
--- a/libs/predef/doc/predef.qbk
+++ b/libs/predef/doc/predef.qbk
@@ -1,6 +1,6 @@
 [article Predef
     [quickbook 1.7]
-    [version 1.1]
+    [version 1.2]
     [authors [Rivera, Rene]]
     [copyright 2005, 2008-2014 Rene Rivera]
     [purpose Identification and specification of predefined macros.]
@@ -558,6 +558,133 @@ and "Y", "M", "D" for dates.
 
 [endsect]
 
+[section Check Utilities]
+
+The `predef_check` utility provides a facility for building a
+program that will check a given set of expressions against
+the definitions it detected when it was built.
+
+[heading [^predef_check] programs]
+
+Even though there is only one `predef_check` program, there
+are variations for each of the languages that are detected
+by Predef to match the convention for sources files. For all
+of them one invokes with a list of expression arguments. The
+expressions are evaluated within the context of the particular
+[^predef_check] program and if they all are true zero (0) is returned.
+Otherwise the index of the first false expression is returned.
+
+The expression syntax is simple:
+
+[teletype]
+``
+predef-definition [ relational-operator version-value ]
+``
+[c++]
+
+[~predef-definition] can be any of the Predef definitions. For
+example `BOOST_COMP_GCC`.
+
+[~relational-operator] can be any of: [^>], [^<], [^>=], [^<=],
+[^==] and [^!=].
+
+[~version-number] can be a full or partial version triplet value.
+If it's a partial version triple it is completed with zeros. That
+is [^x.y] is equivalent to [^x.y.0] and [^x] is equivalent to
+[^x.0.0].
+
+The [~relations-operator] and [~version-number] can be ommited. In
+which case it is equivalent to:
+
+[teletype]
+``
+predef-definition > 0.0.0
+``
+[c++]
+
+[heading Using with Boost.Build]
+
+You can use the [^predef_check] programs directly from Boost Build
+to configure target requirements. This is useful for controlling
+what gets built as part of your project based on the detailed
+version information available in Predef. The basic use is simple:
+
+[teletype]
+``
+import path-to-predef-src/check/predef
+    : check require
+    : predef-check predef-require ;
+
+exe my_windows_program : windows_source.cpp
+    : [ predef-require "BOOST_OS_WINDOWS" ] ;
+``
+[c++]
+
+That simple use case will skip building the [^my_windows_program]
+unless one is building for Windows. Like the direct [^predef_check]
+you can pass mutiple expressions using relational comparisons.
+For example:
+
+[teletype]
+``
+import path-to-predef-src/check/predef
+    : check require
+    : predef-check predef-require ;
+
+lib my_special_lib : source.cpp
+    : [ predef-require "BOOST_OS_WINDOWS != 0" "BOOST_OS_VMS != 0"] ;
+``
+[c++]
+
+And in that case the [^my_special_lib] is built only when the OS is
+not Windows or VMS. The [^requires] rule is a special case of the
+[^check] rule. And is defined in terms of it:
+
+[teletype]
+``
+rule require ( expressions + : language ? )
+{
+    return [ check $(expressions) : $(language) : : <build>no ] ;
+}
+``
+[c++]
+
+You can use the [^check] rule for more control and to implement
+something other than control of what gets built. The definition
+for the [^check] rule is:
+
+[teletype]
+``
+rule check ( expressions + : language ? : true-properties * : false-properties * )
+``
+[c++]
+
+When invoked as a reuirement of a Boost Build target this rule
+will add the [^true-properties] to the target if all the [^expressions]
+evaluate to true. Otherwise the [^false-properties] get added as
+requirements. For example you could use it to enable or disable
+features in your programs:
+
+[teletype]
+``
+import path-to-predef-src/check/predef
+    : check require
+    : predef-check predef-require ;
+
+exe my_special_exe : source.cpp
+    : [ predef-check "BOOST_OS_WINDOWS == 0"
+        : <define>ENABLE_WMF=0
+        : <define>ENABLE_WMF=1 ] ;
+``
+[c++]
+
+For both [^check] and [^require] the [^language] argument controls
+which variant of the [^predef_check] program is used to check the
+expressions. It defaults to "c++", but can be any of: "c", "cpp",
+"objc", and "objcpp".
+
+[endsect]
+
 [include history.qbk]
 [include todo.qbk]
 
diff --git a/libs/predef/doc/todo.qbk b/libs/predef/doc/todo.qbk
index 12f7db57f..aa1c845bc 100644
--- a/libs/predef/doc/todo.qbk
+++ b/libs/predef/doc/todo.qbk
@@ -8,5 +8,6 @@ http://www.boost.org/LICENSE_1_0.txt)
 [section To Do]
 
 * Improve reference documentation.
+* Provide BOOST_WORKAROUND style macros for public use.
 
 [endsect]
diff --git a/libs/predef/meta/libraries.json b/libs/predef/meta/libraries.json
new file mode 100644
index 000000000..d7e326cdd
--- /dev/null
+++ b/libs/predef/meta/libraries.json
@@ -0,0 +1,14 @@
+{
+    "key": "predef",
+    "name": "Predef",
+    "authors": [
+        "Rene Rivera"
+    ],
+    "description": "This library defines a set of compiler, architecture, operating system, library, and other version numbers from the information it can gather of C, C++, Objective C, and Objective C++ predefined macros or those defined in generally available headers.",
+    "category": [
+        "Miscellaneous"
+    ],
+    "maintainers": [
+        "Rene Rivera <grafikrobot -at- gmail.com>"
+    ]
+}
diff --git a/libs/predef/test/build.jam b/libs/predef/test/build.jam
index 10ba4f8f8..28e147374 100755
--- a/libs/predef/test/build.jam
+++ b/libs/predef/test/build.jam
@@ -4,6 +4,8 @@
 # (See accompanying file LICENSE_1_0.txt or copy at
 # http://www.boost.org/LICENSE_1_0.txt)
 
+import ../check/predef : require : predef-require ;
+
 local predef-include-root ;
 local predef-dependency ;
 
@@ -53,6 +55,6 @@ test-suite predef :
     [ run info_as_objc.m : : : <test-info>always_show_run_output ]
     [ run version.cpp ]
     [ run make.cpp ]
-    [ compile macos_endian.c ]
-    [ compile macos_vs_bsd.c ]
+    [ compile macos_endian.c : [ predef-require "BOOST_OS_MACOS" : cpp ] ]
+    [ compile macos_vs_bsd.c : [ predef-require "BOOST_OS_MACOS" : cpp ] ]
     ;
diff --git a/libs/predef/test/info_as_c.c b/libs/predef/test/info_as_c.c
index fe26e84f9..ba84947f3 100644
--- a/libs/predef/test/info_as_c.c
+++ b/libs/predef/test/info_as_c.c
@@ -13,8 +13,8 @@ http://www.boost.org/LICENSE_1_0.txt)
 typedef struct predef_info
 {
     unsigned tag;
-    char * name;
-    char * description;
+    const char * name;
+    const char * description;
     unsigned value;
 } predef_info;
 
@@ -46,7 +46,7 @@ int main()
         if (*i == 0x67890DEF)
         {
             predef_count += 1;
-            predefs = realloc(predefs,predef_count*sizeof(predef_info*));
+            predefs = (predef_info**)realloc(predefs,predef_count*sizeof(predef_info*));
             predefs[predef_count-1] = (predef_info*)i;
         }
     }
diff --git a/libs/predef/test/make.cpp b/libs/predef/test/make.cpp
index 9dbd4a8d4..3ae8192bc 100644
--- a/libs/predef/test/make.cpp
+++ b/libs/predef/test/make.cpp
@@ -36,6 +36,7 @@ void test_BOOST_VERSION_NUMBER()
     PREDEF_CHECK(BOOST_PREDEF_MAKE_0X_VRRPPPP(0xFFFFFFF) == BOOST_VERSION_NUMBER(0xF,0xFF,0xFFFF));
     PREDEF_CHECK(BOOST_PREDEF_MAKE_0X_VVRRP(0xFFFFF) == BOOST_VERSION_NUMBER(0xFF,0xFF,0xF));
     PREDEF_CHECK(BOOST_PREDEF_MAKE_0X_VRRPP000(0xFFFFF000) == BOOST_VERSION_NUMBER(0xF,0xFF,0xFF));
+    PREDEF_CHECK(BOOST_PREDEF_MAKE_0X_VVRRPP(0xFFFFFF) == BOOST_VERSION_NUMBER(0xFF,0xFF,0xFF));
 
     PREDEF_CHECK(BOOST_PREDEF_MAKE_10_VRP(999) == BOOST_VERSION_NUMBER(9,9,9));
     PREDEF_CHECK(BOOST_PREDEF_MAKE_10_VPPP(9999) == BOOST_VERSION_NUMBER(9,0,999));