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Author | SHA1 | Date | |
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9339be979f |
@ -1,13 +1,3 @@
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# Tribool library
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# Copyright (C) 2002-2003 Douglas Gregor
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# Use, modification and distribution is subject to the Boost Software License,
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# Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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# http://www.boost.org/LICENSE_1_0.txt)
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# For more information, see http://www.boost.org/
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project boost-sandbox/utility/doc ;
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import boostbook ;
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import doxygen ;
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@ -17,20 +7,9 @@ doxygen reference : [ glob ../../../boost/logic/tribool.hpp ]
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[ glob ../../../boost/logic/tribool_io.hpp ]
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;
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boostbook tribool
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:
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tribool.boostbook
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:
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<xsl:param>boost.root=../../../..
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:
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tribool.boostbook
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:
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<format>pdf:<xsl:param>boost.url.prefix=http://www.boost.org/doc/libs/release/doc/html
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<dependency>reference
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;
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###############################################################################
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alias boostdoc
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: tribool/<format>docbook
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:
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:
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: ;
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explicit boostdoc ;
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alias boostrelease ;
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explicit boostrelease ;
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;
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|
@ -138,18 +138,6 @@ if (<functionname>indeterminate</functionname>(x)) {
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else {
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// report success or failure of x
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}</programlisting>
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<para> All the logical operators and methods of <code><classname>tribool</classname></code> are marked
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as <code>constexpr</code> in C++11. It means that <code><classname>tribool</classname></code> can
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be used in compile time expressions:</para>
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<programlisting>constexpr <classname>tribool</classname> x = (tribool(true) || tribool(indeterminate));
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<functionname>static_assert</functionname>(x, "Must be true!");
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</programlisting>
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<note>Some compilers may have troubles with evaluating <code>tribool::operator safe_bool()</code> at compile time.</note>
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</section>
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<section>
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@ -14,7 +14,7 @@
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#include <boost/config.hpp>
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#include <boost/detail/workaround.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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#if BOOST_WORKAROUND(_MSC_VER, >= 1200)
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# pragma once
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#endif
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@ -59,9 +59,9 @@ typedef bool (*indeterminate_keyword_t)(tribool, detail::indeterminate_t);
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* \returns <tt>x.value == tribool::indeterminate_value</tt>
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* \throws nothrow
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*/
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BOOST_CONSTEXPR inline bool
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inline bool
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indeterminate(tribool x,
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detail::indeterminate_t dummy = detail::indeterminate_t()) BOOST_NOEXCEPT;
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detail::indeterminate_t dummy = detail::indeterminate_t());
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/**
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* \brief A 3-state boolean type.
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@ -85,7 +85,7 @@ public:
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*
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* \throws nothrow
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*/
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BOOST_CONSTEXPR tribool() BOOST_NOEXCEPT : value(false_value) {}
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tribool() : value(false_value) {}
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/**
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* Construct a new 3-state boolean value with the given boolean
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@ -93,14 +93,14 @@ public:
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*
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* \throws nothrow
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*/
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BOOST_CONSTEXPR tribool(bool initial_value) BOOST_NOEXCEPT : value(initial_value? true_value : false_value) {}
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tribool(bool initial_value) : value(initial_value? true_value : false_value) {}
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/**
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* Construct a new 3-state boolean value with an indeterminate value.
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*
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* \throws nothrow
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*/
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BOOST_CONSTEXPR tribool(indeterminate_keyword_t) BOOST_NOEXCEPT : value(indeterminate_value) {}
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tribool(indeterminate_keyword_t) : value(indeterminate_value) {}
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/**
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* Use a 3-state boolean in a boolean context. Will evaluate true in a
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@ -109,7 +109,7 @@ public:
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* \returns true if the 3-state boolean is true, false otherwise
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* \throws nothrow
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*/
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BOOST_CONSTEXPR operator safe_bool() const BOOST_NOEXCEPT
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operator safe_bool() const
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{
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return value == true_value? &dummy::nonnull : 0;
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}
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@ -123,7 +123,7 @@ public:
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// Check if the given tribool has an indeterminate value. Also doubles as a
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// keyword for the 'indeterminate' value
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BOOST_CONSTEXPR inline bool indeterminate(tribool x, detail::indeterminate_t) BOOST_NOEXCEPT
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inline bool indeterminate(tribool x, detail::indeterminate_t)
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{
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return x.value == tribool::indeterminate_value;
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}
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@ -156,7 +156,7 @@ BOOST_CONSTEXPR inline bool indeterminate(tribool x, detail::indeterminate_t) BO
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* </table>
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* \throws nothrow
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*/
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BOOST_CONSTEXPR inline tribool operator!(tribool x) BOOST_NOEXCEPT
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inline tribool operator!(tribool x)
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{
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return x.value == tribool::false_value? tribool(true)
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:x.value == tribool::true_value? tribool(false)
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@ -196,36 +196,38 @@ BOOST_CONSTEXPR inline tribool operator!(tribool x) BOOST_NOEXCEPT
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* </table>
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* \throws nothrow
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*/
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BOOST_CONSTEXPR inline tribool operator&&(tribool x, tribool y) BOOST_NOEXCEPT
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inline tribool operator&&(tribool x, tribool y)
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{
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return (static_cast<bool>(!x) || static_cast<bool>(!y))
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? tribool(false)
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: ((static_cast<bool>(x) && static_cast<bool>(y)) ? tribool(true) : indeterminate)
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;
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if (static_cast<bool>(!x) || static_cast<bool>(!y))
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return false;
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else if (static_cast<bool>(x) && static_cast<bool>(y))
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return true;
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else
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return indeterminate;
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}
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator&&(tribool x, bool y) BOOST_NOEXCEPT
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inline tribool operator&&(tribool x, bool y)
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{ return y? x : tribool(false); }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator&&(bool x, tribool y) BOOST_NOEXCEPT
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inline tribool operator&&(bool x, tribool y)
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{ return x? y : tribool(false); }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator&&(indeterminate_keyword_t, tribool x) BOOST_NOEXCEPT
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inline tribool operator&&(indeterminate_keyword_t, tribool x)
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{ return !x? tribool(false) : tribool(indeterminate); }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator&&(tribool x, indeterminate_keyword_t) BOOST_NOEXCEPT
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inline tribool operator&&(tribool x, indeterminate_keyword_t)
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{ return !x? tribool(false) : tribool(indeterminate); }
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/**
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@ -261,36 +263,38 @@ BOOST_CONSTEXPR inline tribool operator&&(tribool x, indeterminate_keyword_t) BO
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* </table>
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* \throws nothrow
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*/
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BOOST_CONSTEXPR inline tribool operator||(tribool x, tribool y) BOOST_NOEXCEPT
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inline tribool operator||(tribool x, tribool y)
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{
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return (static_cast<bool>(!x) && static_cast<bool>(!y))
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? tribool(false)
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: ((static_cast<bool>(x) || static_cast<bool>(y)) ? tribool(true) : tribool(indeterminate))
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;
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if (static_cast<bool>(!x) && static_cast<bool>(!y))
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return false;
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else if (static_cast<bool>(x) || static_cast<bool>(y))
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return true;
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else
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return indeterminate;
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}
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator||(tribool x, bool y) BOOST_NOEXCEPT
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inline tribool operator||(tribool x, bool y)
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{ return y? tribool(true) : x; }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator||(bool x, tribool y) BOOST_NOEXCEPT
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inline tribool operator||(bool x, tribool y)
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{ return x? tribool(true) : y; }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator||(indeterminate_keyword_t, tribool x) BOOST_NOEXCEPT
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inline tribool operator||(indeterminate_keyword_t, tribool x)
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{ return x? tribool(true) : tribool(indeterminate); }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator||(tribool x, indeterminate_keyword_t) BOOST_NOEXCEPT
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inline tribool operator||(tribool x, indeterminate_keyword_t)
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{ return x? tribool(true) : tribool(indeterminate); }
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//@}
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@ -327,34 +331,34 @@ BOOST_CONSTEXPR inline tribool operator||(tribool x, indeterminate_keyword_t) BO
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* </table>
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* \throws nothrow
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*/
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BOOST_CONSTEXPR inline tribool operator==(tribool x, tribool y) BOOST_NOEXCEPT
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inline tribool operator==(tribool x, tribool y)
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{
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return (indeterminate(x) || indeterminate(y))
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? indeterminate
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: ((x && y) || (!x && !y))
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;
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if (indeterminate(x) || indeterminate(y))
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return indeterminate;
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else
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return (x && y) || (!x && !y);
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}
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator==(tribool x, bool y) BOOST_NOEXCEPT { return x == tribool(y); }
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inline tribool operator==(tribool x, bool y) { return x == tribool(y); }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator==(bool x, tribool y) BOOST_NOEXCEPT { return tribool(x) == y; }
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inline tribool operator==(bool x, tribool y) { return tribool(x) == y; }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator==(indeterminate_keyword_t, tribool x) BOOST_NOEXCEPT
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inline tribool operator==(indeterminate_keyword_t, tribool x)
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{ return tribool(indeterminate) == x; }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator==(tribool x, indeterminate_keyword_t) BOOST_NOEXCEPT
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inline tribool operator==(tribool x, indeterminate_keyword_t)
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{ return tribool(indeterminate) == x; }
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/**
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@ -390,34 +394,34 @@ BOOST_CONSTEXPR inline tribool operator==(tribool x, indeterminate_keyword_t) BO
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* </table>
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* \throws nothrow
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*/
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BOOST_CONSTEXPR inline tribool operator!=(tribool x, tribool y) BOOST_NOEXCEPT
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inline tribool operator!=(tribool x, tribool y)
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{
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return (indeterminate(x) || indeterminate(y))
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? indeterminate
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: !((x && y) || (!x && !y))
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;
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if (indeterminate(x) || indeterminate(y))
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return indeterminate;
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else
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return !((x && y) || (!x && !y));
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}
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator!=(tribool x, bool y) BOOST_NOEXCEPT { return x != tribool(y); }
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inline tribool operator!=(tribool x, bool y) { return x != tribool(y); }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator!=(bool x, tribool y) BOOST_NOEXCEPT { return tribool(x) != y; }
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inline tribool operator!=(bool x, tribool y) { return tribool(x) != y; }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator!=(indeterminate_keyword_t, tribool x) BOOST_NOEXCEPT
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inline tribool operator!=(indeterminate_keyword_t, tribool x)
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{ return tribool(indeterminate) != x; }
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/**
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* \overload
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*/
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BOOST_CONSTEXPR inline tribool operator!=(tribool x, indeterminate_keyword_t) BOOST_NOEXCEPT
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inline tribool operator!=(tribool x, indeterminate_keyword_t)
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{ return x != tribool(indeterminate); }
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} } // end namespace boost::logic
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@ -11,7 +11,7 @@
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#include <boost/detail/workaround.hpp>
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#include <boost/noncopyable.hpp>
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#if defined(_MSC_VER)
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#if BOOST_WORKAROUND(_MSC_VER, >= 1200)
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# pragma once
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#endif
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@ -104,11 +104,17 @@ template<>
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inline std::basic_string<char> get_default_indeterminate_name<char>()
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{ return "indeterminate"; }
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#ifndef BOOST_NO_WCHAR_T
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#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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// VC++ 6.0 chokes on the specialization below, so we're stuck without
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// wchar_t support. What a pain. TODO: it might just need a the template
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// parameter as function parameter...
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#else
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# ifndef BOOST_NO_WCHAR_T
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/// Returns the wide character string L"indeterminate".
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template<>
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inline std::basic_string<wchar_t> get_default_indeterminate_name<wchar_t>()
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{ return L"indeterminate"; }
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# endif
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#endif
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// http://www.cantrip.org/locale.html
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@ -279,9 +285,9 @@ operator>>(std::basic_istream<CharT, Traits>& in, tribool& x)
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bool falsename_ok = true, truename_ok = true, othername_ok = true;
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// Modeled after the code from Library DR 17
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while ((falsename_ok && pos < falsename.size())
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|| (truename_ok && pos < truename.size())
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|| (othername_ok && pos < othername.size())) {
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while (falsename_ok && pos < falsename.size()
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|| truename_ok && pos < truename.size()
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|| othername_ok && pos < othername.size()) {
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typename Traits::int_type c = in.get();
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if (c == Traits::eof())
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return in;
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|
16
index.html
16
index.html
@ -1,16 +0,0 @@
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<!--
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Copyright 2011 Daniel James.
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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-->
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<html>
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<head>
|
||||
<meta http-equiv="refresh" content="0; URL=../../doc/html/tribool.html">
|
||||
</head>
|
||||
<body>
|
||||
Automatic redirection failed, please go to
|
||||
<a href="../../doc/html/tribool.html">../../doc/html/tribool.html</a>
|
||||
</body>
|
||||
</html>
|
@ -1,15 +0,0 @@
|
||||
{
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||||
"key": "logic/tribool",
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||||
"name": "Tribool",
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||||
"authors": [
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||||
"Doug Gregor"
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||||
],
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||||
"description": "3-state boolean type library.",
|
||||
"documentation": "/doc/html/tribool.html",
|
||||
"category": [
|
||||
"Miscellaneous"
|
||||
],
|
||||
"maintainers": [
|
||||
"Douglas Gregor <dgregor -at- cs.indiana.edu>"
|
||||
]
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||||
}
|
@ -114,26 +114,6 @@ int test_main(int, char*[])
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BOOST_CHECK(false);
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||||
}
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#ifndef BOOST_NO_CXX11_CONSTEXPR
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constexpr bool res_ors = indeterminate(false || tribool(false) || false || indeterminate); // true
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||||
BOOST_CHECK(res_ors);
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char array_ors[res_ors ? 2 : 3];
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BOOST_CHECK(sizeof(array_ors) / sizeof(char) == 2);
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constexpr bool res_ands = !indeterminate(!(true && tribool(true) && true && indeterminate)); // false
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||||
BOOST_CHECK(!res_ands);
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char array_ands[res_ands ? 2 : 3];
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BOOST_CHECK(sizeof(array_ands) / sizeof(char) == 3);
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// We avoid checking the tribool::operator safe_bool(),
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||||
// because GCC-4.8 fails to evaluate it at compile-time.
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// Clang compiles well.
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//
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// constexpr bool res_safe_bool = tribool(true); // false
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||||
// constexpr tribool xxx = (tribool(true) || tribool(indeterminate));
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// static_assert(xxx, "Must be true!");
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#endif
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||||
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||||
std::cout << "no errors detected\n";
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||||
return 0;
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||||
}
|
||||
|
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