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Improve C++14 support:

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* Make functions constexpr.
* Make functions noexcept where appropriate.
* Add test case for the above.
This commit is contained in:
jzmaddock
2017-03-28 18:57:50 +01:00
parent 13b153c657
commit a52bae3639
10 changed files with 77 additions and 61 deletions
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doc/gcd/math-gcd.qbk
+19 -8
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@@ -24,9 +24,9 @@ programming problems.
class lcm_evaluator;
template < typename IntegerType >
IntegerType gcd( IntegerType const &a, IntegerType const &b );
constexpr IntegerType gcd( IntegerType const &a, IntegerType const &b );
template < typename IntegerType >
IntegerType lcm( IntegerType const &a, IntegerType const &b );
constexpr IntegerType lcm( IntegerType const &a, IntegerType const &b );
typedef ``['see-below]`` static_gcd_type;
@@ -54,8 +54,9 @@ programming problems.
typedef IntegerType second_argument_type;
// Function object interface
result_type operator ()( first_argument_type const &a,
second_argument_type const &b ) const;
constexpr result_type operator ()(
first_argument_type const &a,
second_argument_type const &b ) const;
};
The boost::math::gcd_evaluator class template defines a function object
@@ -70,6 +71,9 @@ the GCD function template. If a numeric type wants to customize evaluations
of its greatest common divisors, then the type should specialize on the
gcd_evaluator class template.
Note that these function objects are `constexpr` in C++14 and later only.
They are also declared `noexcept` when appropriate.
[endsect]
[section LCM Function Object]
@@ -86,8 +90,9 @@ gcd_evaluator class template.
typedef IntegerType second_argument_type;
// Function object interface
result_type operator ()( first_argument_type const &a,
second_argument_type const &b ) const;
constexpr result_type operator ()(
first_argument_type const &a,
second_argument_type const &b ) const;
};
The boost::math::lcm_evaluator class template defines a function object
@@ -103,6 +108,9 @@ of the LCM function template. If a numeric type wants to customize
evaluations of its least common multiples, then the type should
specialize on the lcm_evaluator class template.
Note that these function objects are constexpr in C++14 and later only.
They are also declared `noexcept` when appropriate.
[endsect]
[section:run_time Run-time GCD & LCM Determination]
@@ -110,10 +118,10 @@ specialize on the lcm_evaluator class template.
[*Header: ] [@../../../../boost/math/common_factor_rt.hpp <boost/math/common_factor_rt.hpp>]
template < typename IntegerType >
IntegerType boost::math::gcd( IntegerType const &a, IntegerType const &b );
constexpr IntegerType boost::math::gcd( IntegerType const &a, IntegerType const &b );
template < typename IntegerType >
IntegerType boost::math::lcm( IntegerType const &a, IntegerType const &b );
constexpr IntegerType boost::math::lcm( IntegerType const &a, IntegerType const &b );
The boost::math::gcd function template returns the greatest common
(nonnegative) divisor of the two integers passed to it.
@@ -124,6 +132,9 @@ IntegerType, which is also the return type. Internally, these function
templates use an object of the corresponding version of the
gcd_evaluator and lcm_evaluator class templates, respectively.
Note that these functions are constexpr in C++14 and later only.
They are also declared `noexcept` when appropriate.
[endsect]
[section:compile_time Compile time GCD and LCM determination]
doc/html/boost_integer/cstdint.html
+1 -1
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@@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Removed from library: Standard Integer Types</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<meta name="generator" content="DocBook XSL Stylesheets V1.77.1">
<link rel="home" href="../index.html" title="Boost.Integer">
<link rel="up" href="../index.html" title="Boost.Integer">
<link rel="prev" href="history.html" title="History">
doc/html/boost_integer/history.html
+1 -1
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@@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>History</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<meta name="generator" content="DocBook XSL Stylesheets V1.77.1">
<link rel="home" href="../index.html" title="Boost.Integer">
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<link rel="prev" href="minmax.html" title="Compile time min/max calculation">
doc/html/boost_integer/integer.html
+2 -2
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@@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Integer Type Selection</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<meta name="generator" content="DocBook XSL Stylesheets V1.77.1">
<link rel="home" href="../index.html" title="Boost.Integer">
<link rel="up" href="../index.html" title="Boost.Integer">
<link rel="prev" href="traits.html" title="Integer Traits">
@@ -26,7 +26,7 @@
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="boost_integer.integer"></a><a class="link" href="integer.html" title="Integer Type Selection">Integer Type Selection</a>
</h2></div></div></div>
<div class="toc"><dl class="toc">
<div class="toc"><dl>
<dt><span class="section"><a href="integer.html#boost_integer.integer.synopsis">Synopsis</a></span></dt>
<dt><span class="section"><a href="integer.html#boost_integer.integer.easiest">Easiest-to-Manipulate
Types</a></span></dt>
doc/html/boost_integer/log2.html
+2 -2
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@@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Compile Time log2 Calculation</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<meta name="generator" content="DocBook XSL Stylesheets V1.77.1">
<link rel="home" href="../index.html" title="Boost.Integer">
<link rel="up" href="../index.html" title="Boost.Integer">
<link rel="prev" href="mask.html" title="Integer Masks">
@@ -26,7 +26,7 @@
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="boost_integer.log2"></a><a class="link" href="log2.html" title="Compile Time log2 Calculation">Compile Time log2 Calculation</a>
</h2></div></div></div>
<div class="toc"><dl class="toc">
<div class="toc"><dl>
<dt><span class="section"><a href="log2.html#boost_integer.log2.synopsis">Synopsis</a></span></dt>
<dt><span class="section"><a href="log2.html#boost_integer.log2.usage">Usage</a></span></dt>
<dt><span class="section"><a href="log2.html#boost_integer.log2.demonstration_program">Demonstration
doc/html/boost_integer/mask.html
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@@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Integer Masks</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<meta name="generator" content="DocBook XSL Stylesheets V1.77.1">
<link rel="home" href="../index.html" title="Boost.Integer">
<link rel="up" href="../index.html" title="Boost.Integer">
<link rel="prev" href="integer.html" title="Integer Type Selection">
@@ -26,7 +26,7 @@
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="boost_integer.mask"></a><a class="link" href="mask.html" title="Integer Masks">Integer Masks</a>
</h2></div></div></div>
<div class="toc"><dl class="toc">
<div class="toc"><dl>
<dt><span class="section"><a href="mask.html#boost_integer.mask.overview">Overview</a></span></dt>
<dt><span class="section"><a href="mask.html#boost_integer.mask.synopsis">Synopsis</a></span></dt>
<dt><span class="section"><a href="mask.html#boost_integer.mask.single_bit_mask_class_template">Single
doc/html/boost_integer/minmax.html
+2 -2
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@@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Compile time min/max calculation</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<meta name="generator" content="DocBook XSL Stylesheets V1.77.1">
<link rel="home" href="../index.html" title="Boost.Integer">
<link rel="up" href="../index.html" title="Boost.Integer">
<link rel="prev" href="log2.html" title="Compile Time log2 Calculation">
@@ -26,7 +26,7 @@
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="boost_integer.minmax"></a><a class="link" href="minmax.html" title="Compile time min/max calculation">Compile time min/max calculation</a>
</h2></div></div></div>
<div class="toc"><dl class="toc">
<div class="toc"><dl>
<dt><span class="section"><a href="minmax.html#boost_integer.minmax.synopsis">Synopsis</a></span></dt>
<dt><span class="section"><a href="minmax.html#boost_integer.minmax.usage">Usage</a></span></dt>
<dt><span class="section"><a href="minmax.html#boost_integer.minmax.example">Example</a></span></dt>
doc/html/boost_integer/traits.html
+2 -2
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@@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Integer Traits</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<meta name="generator" content="DocBook XSL Stylesheets V1.77.1">
<link rel="home" href="../index.html" title="Boost.Integer">
<link rel="up" href="../index.html" title="Boost.Integer">
<link rel="prev" href="../index.html" title="Boost.Integer">
@@ -26,7 +26,7 @@
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="boost_integer.traits"></a><a class="link" href="traits.html" title="Integer Traits">Integer Traits</a>
</h2></div></div></div>
<div class="toc"><dl class="toc">
<div class="toc"><dl>
<dt><span class="section"><a href="traits.html#boost_integer.traits.motivation">Motivation</a></span></dt>
<dt><span class="section"><a href="traits.html#boost_integer.traits.synopsis">Synopsis</a></span></dt>
<dt><span class="section"><a href="traits.html#boost_integer.traits.description">Description</a></span></dt>
doc/html/index.html
+3 -3
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@@ -3,7 +3,7 @@
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Boost.Integer</title>
<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<meta name="generator" content="DocBook XSL Stylesheets V1.77.1">
<link rel="home" href="index.html" title="Boost.Integer">
<link rel="next" href="boost_integer/traits.html" title="Integer Traits">
</head>
@@ -50,7 +50,7 @@
</div>
<div class="toc">
<p><b>Table of Contents</b></p>
<dl class="toc">
<dl>
<dt><span class="section"><a href="index.html#boost_integer.overview">Overview</a></span></dt>
<dt><span class="section"><a href="boost_integer/traits.html">Integer Traits</a></span></dt>
<dt><span class="section"><a href="boost_integer/integer.html">Integer Type Selection</a></span></dt>
@@ -219,7 +219,7 @@
</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 01, 2014 at 19:57:36 GMT</small></p></td>
<td align="left"><p><small>Last revised: March 28, 2017 at 17:56:42 GMT</small></p></td>
<td align="right"><div class="copyright-footer"></div></td>
</tr></table>
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