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| </div> |
| <div class="section"> |
| <div class="titlepage"><div><div><h5 class="title"> |
| <a name="spirit.karma.reference.numeric.signed_int"></a><a class="link" href="signed_int.html" title="Signed Integer Number Generators (int_, etc.)">Signed |
| Integer Number Generators (<code class="computeroutput"><span class="identifier">int_</span></code>, |
| etc.)</a> |
| </h5></div></div></div> |
| <a name="spirit.karma.reference.numeric.signed_int.description"></a><h6> |
| <a name="id1068380"></a> |
| <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.description">Description</a> |
| </h6> |
| <p> |
| The <code class="computeroutput"><span class="identifier">int_generator</span></code> can |
| generate signed integers of arbitrary length and size. This is almost |
| the same as the <code class="computeroutput"><span class="identifier">uint_generator</span></code>. |
| The only difference is the additional task of generating the <code class="computeroutput"><span class="char">'+'</span></code> or <code class="computeroutput"><span class="char">'-'</span></code> |
| sign preceding the number. The class interface is the same as that of |
| the <code class="computeroutput"><span class="identifier">uint_generator</span></code>. |
| </p> |
| <p> |
| The <code class="computeroutput"><span class="identifier">int_generator</span></code> generator |
| can be used to emit ordinary primitive C/C++ integers or even user defined |
| scalars such as bigints (unlimited precision integers) if the type follows |
| certain expression requirements (for more information about the requirements, |
| see <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.additional_requirements">below</a>). |
| </p> |
| <a name="spirit.karma.reference.numeric.signed_int.header"></a><h6> |
| <a name="id1068449"></a> |
| <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.header">Header</a> |
| </h6> |
| <pre class="programlisting"><span class="comment">// forwards to <boost/spirit/home/karma/numeric/int.hpp> |
| </span><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">spirit</span><span class="special">/</span><span class="identifier">include</span><span class="special">/</span><span class="identifier">karma_int</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| </pre> |
| <p> |
| Also, see <a class="link" href="../../../structure/include.html" title="Include">Include Structure</a>. |
| </p> |
| <a name="spirit.karma.reference.numeric.signed_int.namespace"></a><h6> |
| <a name="id1068523"></a> |
| <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.namespace">Namespace</a> |
| </h6> |
| <div class="informaltable"><table class="table"> |
| <colgroup><col></colgroup> |
| <thead><tr><th> |
| <p> |
| Name |
| </p> |
| </th></tr></thead> |
| <tbody> |
| <tr><td> |
| <p> |
| <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">lit</span> <span class="comment">// alias: |
| boost::spirit::karma::lit</span></code> |
| </p> |
| </td></tr> |
| <tr><td> |
| <p> |
| <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">short_</span> <span class="comment">// |
| alias: boost::spirit::karma::short_</span></code> |
| </p> |
| </td></tr> |
| <tr><td> |
| <p> |
| <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">int_</span> <span class="comment">// alias: |
| boost::spirit::karma::int_</span></code> |
| </p> |
| </td></tr> |
| <tr><td> |
| <p> |
| <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">long_</span> <span class="comment">// |
| alias: boost::spirit::karma::long_</span></code> |
| </p> |
| </td></tr> |
| <tr><td> |
| <p> |
| <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">long_long</span> <span class="comment">// |
| alias: boost::spirit::karma::long_long</span></code> |
| </p> |
| </td></tr> |
| </tbody> |
| </table></div> |
| <div class="note"><table border="0" summary="Note"> |
| <tr> |
| <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../images/note.png"></td> |
| <th align="left">Note</th> |
| </tr> |
| <tr><td align="left" valign="top"><p> |
| The generators <code class="computeroutput"><span class="identifier">long_long</span></code> |
| and <code class="computeroutput"><span class="identifier">long_long</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code> |
| are only available on platforms where the preprocessor constant <code class="computeroutput"><span class="identifier">BOOST_HAS_LONG_LONG</span></code> is defined (i.e. |
| on platforms having native support for <code class="computeroutput"><span class="keyword">long</span> |
| <span class="keyword">long</span></code> (64 bit) integer types). |
| </p></td></tr> |
| </table></div> |
| <div class="note"><table border="0" summary="Note"> |
| <tr> |
| <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../images/note.png"></td> |
| <th align="left">Note</th> |
| </tr> |
| <tr><td align="left" valign="top"><p> |
| <code class="computeroutput"><span class="identifier">lit</span></code> is reused by the |
| <a class="link" href="../string.html" title="String">String Generators</a>, |
| the <a class="link" href="../char.html" title="Char">Character Generators</a>, |
| and the Numeric Generators. In general, a char generator is created |
| when you pass in a character, a string generator is created when you |
| pass in a string, and a numeric generator is created when you use a |
| numeric literal. |
| </p></td></tr> |
| </table></div> |
| <a name="spirit.karma.reference.numeric.signed_int.synopsis"></a><h6> |
| <a name="id1068832"></a> |
| <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.synopsis">Synopsis</a> |
| </h6> |
| <pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span> |
| <span class="keyword">typename</span> <span class="identifier">T</span> |
| <span class="special">,</span> <span class="keyword">unsigned</span> <span class="identifier">Radix</span> |
| <span class="special">,</span> <span class="keyword">bool</span> <span class="identifier">force_sign</span><span class="special">></span> |
| <span class="keyword">struct</span> <span class="identifier">int_generator</span><span class="special">;</span> |
| </pre> |
| <a name="spirit.karma.reference.numeric.signed_int.template_parameters"></a><h6> |
| <a name="id1068916"></a> |
| <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.template_parameters">Template |
| parameters</a> |
| </h6> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Parameter |
| </p> |
| </th> |
| <th> |
| <p> |
| Description |
| </p> |
| </th> |
| <th> |
| <p> |
| Default |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">T</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| The numeric base type of the numeric parser. |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="keyword">int</span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">Radix</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| The radix base. This can be either 2: binary, 8: octal, 10: |
| decimal and 16: hexadecimal. |
| </p> |
| </td> |
| <td> |
| <p> |
| 10 |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">force_sign</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| If <code class="computeroutput"><span class="keyword">true</span></code>, all numbers |
| will have a sign (space for zero) |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="keyword">false</span></code> |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <a name="spirit.karma.reference.numeric.signed_int.model_of"></a><h6> |
| <a name="id1069092"></a> |
| <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.model_of">Model |
| of</a> |
| </h6> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| <a class="link" href="../generator_concepts/primitivegenerator.html" title="PrimitiveGenerator"><code class="computeroutput"><span class="identifier">PrimitiveGenerator</span></code></a> |
| </p></blockquote></div> |
| <div class="variablelist"> |
| <p class="title"><b>Notation</b></p> |
| <dl> |
| <dt><span class="term"><code class="computeroutput"><span class="identifier">num</span></code></span></dt> |
| <dd><p> |
| Numeric literal, any signed integer value, or a <a class="link" href="../karma_basics.html#spirit.karma.reference.karma_basics.lazy_argument">Lazy |
| Argument</a> that evaluates to a signed integer value of type |
| <code class="computeroutput"><span class="identifier">Num</span></code> |
| </p></dd> |
| <dt><span class="term"><code class="computeroutput"><span class="identifier">Num</span></code></span></dt> |
| <dd><p> |
| Type of <code class="computeroutput"><span class="identifier">num</span></code>: any |
| signed integer type |
| </p></dd> |
| <dt><span class="term"><code class="computeroutput"><span class="identifier">Radix</span></code></span></dt> |
| <dd><p> |
| A constant integer literal specifying the required radix for the |
| output conversion. Valid values are <code class="computeroutput"><span class="number">2</span></code>, |
| <code class="computeroutput"><span class="number">8</span></code>, <code class="computeroutput"><span class="number">10</span></code>, |
| and <code class="computeroutput"><span class="number">16</span></code>. |
| </p></dd> |
| <dt><span class="term"><code class="computeroutput"><span class="identifier">force_sign</span></code></span></dt> |
| <dd><p> |
| A constant boolean literal specifying whether the generated number |
| should always have a sign (<code class="computeroutput"><span class="char">'+'</span></code> |
| for positive numbers, <code class="computeroutput"><span class="char">'-'</span></code> |
| for negative numbers and a '<code class="computeroutput"> </code>' for zero). |
| </p></dd> |
| </dl> |
| </div> |
| <a name="spirit.karma.reference.numeric.signed_int.expression_semantics"></a><h6> |
| <a name="id1069279"></a> |
| <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.expression_semantics">Expression |
| Semantics</a> |
| </h6> |
| <p> |
| Semantics of an expression is defined only where it differs from, or |
| is not defined in <a class="link" href="../generator_concepts/primitivegenerator.html" title="PrimitiveGenerator"><code class="computeroutput"><span class="identifier">PrimitiveGenerator</span></code></a>. |
| </p> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Expression |
| </p> |
| </th> |
| <th> |
| <p> |
| Semantics |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">lit</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| Generate the integer literal <code class="computeroutput"><span class="identifier">num</span></code> |
| using the default formatting (radix is 10, sign is only printed |
| for negative literals). This generator never fails (unless |
| the underlying output stream reports an error). |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| |
| </p> |
| <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">short_</span> |
| <span class="identifier">int_</span> |
| <span class="identifier">long_</span> |
| <span class="identifier">long_long</span></pre> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| Generate the integer provided by a mandatory attribute using |
| the default formatting (radix is 10, sign is only printed for |
| negative literals). This generator never fails (unless the |
| underlying output stream reports an error). |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| |
| </p> |
| <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">short_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> |
| <span class="identifier">int_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> |
| <span class="identifier">long_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> |
| <span class="identifier">long_long</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></pre> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| Generate the integer provided by the immediate literal value |
| the generator is initialized from using the default formatting |
| (radix is 10, sign is only printed for negative literals). |
| If this generator has an associated attribute it succeeds only |
| if the attribute is equal to the immediate literal (unless |
| the underlying output stream reports an error). Otherwise this |
| generator fails and does not generate any output. |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <p> |
| All generators listed in the table above (except <code class="computeroutput"><span class="identifier">lit</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code>) are predefined specializations of the |
| <code class="computeroutput"><span class="identifier">int_generator</span><span class="special"><</span><span class="identifier">Num</span><span class="special">,</span> <span class="identifier">Radix</span><span class="special">,</span> <span class="identifier">force_sign</span><span class="special">></span></code> |
| basic integer number generator type described below. It is possible to |
| directly use this type to create integer generators using a wide range |
| of formatting options. |
| </p> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Expression |
| </p> |
| </th> |
| <th> |
| <p> |
| Semantics |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| |
| </p> |
| <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">int_generator</span><span class="special"><</span> |
| <span class="identifier">Num</span><span class="special">,</span> <span class="identifier">Radix</span><span class="special">,</span> <span class="identifier">force_sign</span> |
| <span class="special">>()</span></pre> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| Generate the integer of type <code class="computeroutput"><span class="identifier">Num</span></code> |
| provided by a mandatory attribute using the specified <code class="computeroutput"><span class="identifier">Radix</span></code> (possible values are |
| <code class="computeroutput"><span class="number">2</span></code>, <code class="computeroutput"><span class="number">8</span></code>, <code class="computeroutput"><span class="number">10</span></code>, |
| and <code class="computeroutput"><span class="number">16</span></code>, the default |
| value is <code class="computeroutput"><span class="number">10</span></code>). If |
| <code class="computeroutput"><span class="identifier">force_sign</span></code> |
| is <code class="computeroutput"><span class="keyword">false</span></code> (the |
| default), a sign is only printed for negative literals. If |
| <code class="computeroutput"><span class="identifier">force_sign</span></code> |
| is <code class="computeroutput"><span class="keyword">true</span></code>, all numbers |
| will be printed using a sign, i.e. <code class="computeroutput"><span class="char">'-'</span></code> |
| for negative numbers, <code class="computeroutput"><span class="char">'+'</span></code> |
| for positive numbers, and <code class="computeroutput"><span class="char">' '</span></code> |
| for zeros. This generator never fails (unless the underlying |
| output stream reports an error). |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| |
| </p> |
| <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">int_generator</span><span class="special"><</span> |
| <span class="identifier">Num</span><span class="special">,</span> <span class="identifier">Radix</span><span class="special">,</span> <span class="identifier">force_sign</span> |
| <span class="special">>()(</span><span class="identifier">num</span><span class="special">)</span></pre> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| Generate the integer of type <code class="computeroutput"><span class="identifier">Num</span></code> |
| provided by the immediate literal value the generator is initialized |
| from, using the specified <code class="computeroutput"><span class="identifier">Radix</span></code> |
| (possible values are <code class="computeroutput"><span class="number">2</span></code>, |
| <code class="computeroutput"><span class="number">8</span></code>, <code class="computeroutput"><span class="number">10</span></code>, and <code class="computeroutput"><span class="number">16</span></code>, |
| the default value is <code class="computeroutput"><span class="number">10</span></code>). |
| If <code class="computeroutput"><span class="identifier">force_sign</span></code> |
| is <code class="computeroutput"><span class="keyword">false</span></code> (the |
| default), a sign is only printed for negative literals. If |
| <code class="computeroutput"><span class="identifier">force_sign</span></code> |
| is <code class="computeroutput"><span class="keyword">true</span></code>, all numbers |
| will be printed using a sign, i.e. <code class="computeroutput"><span class="char">'-'</span></code> |
| for negative numbers, <code class="computeroutput"><span class="char">'+'</span></code> |
| for positive numbers, and <code class="computeroutput"><span class="char">' '</span></code> |
| for zeros. If this generator has an associated attribute it |
| succeeds only if the attribute is equal to the immediate literal |
| (unless the underlying output stream reports an error). Otherwise |
| this generator fails and does not generate any output. |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <a name="spirit.karma.reference.numeric.signed_int.additional_requirements"></a><h6> |
| <a name="id1071041"></a> |
| <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.additional_requirements">Additional |
| Requirements</a> |
| </h6> |
| <p> |
| The following lists enumerate the requirements which must be met in order |
| to use a certain type <code class="computeroutput"><span class="identifier">Num</span></code> |
| to instantiate and use a <code class="computeroutput"><span class="identifier">int_generator</span><span class="special"><</span><span class="identifier">Num</span><span class="special">,</span> <span class="identifier">Radix</span><span class="special">,</span> <span class="identifier">force_sign</span><span class="special">></span></code>. |
| </p> |
| <p> |
| If <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_integral</span><span class="special"><</span><span class="identifier">Num</span><span class="special">>::</span><span class="identifier">value</span></code> is <code class="computeroutput"><span class="keyword">true</span></code> |
| the type <code class="computeroutput"><span class="identifier">Num</span></code> must have |
| defined: |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| comparison operators for: <code class="computeroutput"><span class="special"><</span></code>, |
| <code class="computeroutput"><span class="special"><=</span></code>, <code class="computeroutput"><span class="special">==</span></code>, <code class="computeroutput"><span class="special">!=</span></code>, |
| <code class="computeroutput"><span class="special">></span></code>, and <code class="computeroutput"><span class="special">>=</span></code> |
| </li> |
| <li class="listitem"> |
| numeric operators for: <code class="computeroutput"><span class="special">+</span></code>, |
| <code class="computeroutput"><span class="special">-</span></code>, <code class="computeroutput"><span class="special">/</span></code>, |
| <code class="computeroutput"><span class="special">*</span></code>, <code class="computeroutput"><span class="special">%</span></code>, |
| and unary <code class="computeroutput"><span class="special">-</span></code> |
| </li> |
| </ul></div> |
| <p> |
| If <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_integral</span><span class="special"><</span><span class="identifier">Num</span><span class="special">>::</span><span class="identifier">value</span></code> is <code class="computeroutput"><span class="keyword">false</span></code> |
| the type <code class="computeroutput"><span class="identifier">Num</span></code> must have |
| defined: |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| comparison operators for: <code class="computeroutput"><span class="special"><</span></code>, |
| <code class="computeroutput"><span class="special"><=</span></code>, <code class="computeroutput"><span class="special">==</span></code>, <code class="computeroutput"><span class="special">!=</span></code>, |
| <code class="computeroutput"><span class="special">></span></code>, and <code class="computeroutput"><span class="special">>=</span></code> |
| </li> |
| <li class="listitem"> |
| numeric operators for: <code class="computeroutput"><span class="special">+</span></code>, |
| <code class="computeroutput"><span class="special">-</span></code>, <code class="computeroutput"><span class="special">/</span></code>, |
| <code class="computeroutput"><span class="special">*</span></code>, <code class="computeroutput"><span class="special">%</span></code>, |
| and unary <code class="computeroutput"><span class="special">-</span></code> |
| </li> |
| <li class="listitem"> |
| helper functions implementing the interface and the semantics of: |
| <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">fmod</span></code>, <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">fabs</span></code>, |
| <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pow</span></code>, <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">lround</span></code>, |
| <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">ltrunc</span></code>, <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">floor</span></code>, |
| and <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">ceil</span></code>. These need to be defined |
| in a way so that they will be found using argument dependent lookup |
| (ADL). |
| </li> |
| </ul></div> |
| <a name="spirit.karma.reference.numeric.signed_int.attributes"></a><h6> |
| <a name="id1071510"></a> |
| <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.attributes">Attributes</a> |
| </h6> |
| <div class="informaltable"><table class="table"> |
| <colgroup> |
| <col> |
| <col> |
| </colgroup> |
| <thead><tr> |
| <th> |
| <p> |
| Expression |
| </p> |
| </th> |
| <th> |
| <p> |
| Attribute |
| </p> |
| </th> |
| </tr></thead> |
| <tbody> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">lit</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">unused</span></code> |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">short_</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="keyword">short</span></code>, attribute |
| is mandatory (otherwise compilation will fail) |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">short_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="keyword">short</span></code>, attribute |
| is optional, if it is supplied, the generator compares the |
| attribute with <code class="computeroutput"><span class="identifier">num</span></code> |
| and succeeds only if both are equal, failing otherwise. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">int_</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="keyword">int</span></code>, attribute |
| is mandatory (otherwise compilation will fail) |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">int_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="keyword">int</span></code>, attribute |
| is optional, if it is supplied, the generator compares the |
| attribute with <code class="computeroutput"><span class="identifier">num</span></code> |
| and succeeds only if both are equal, failing otherwise. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">long_</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="keyword">long</span></code>, attribute |
| is mandatory (otherwise compilation will fail) |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">long_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="keyword">long</span></code>, attribute |
| is optional, if it is supplied, the generator compares the |
| attribute with <code class="computeroutput"><span class="identifier">num</span></code> |
| and succeeds only if both are equal, failing otherwise. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">long_long</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="keyword">long</span> <span class="keyword">long</span></code>, |
| attribute is mandatory (otherwise compilation will fail) |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">long_long</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="keyword">long</span> <span class="keyword">long</span></code>, |
| attribute is optional, if it is supplied, the generator compares |
| the attribute with <code class="computeroutput"><span class="identifier">num</span></code> |
| and succeeds only if both are equal, failing otherwise. |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| |
| </p> |
| <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">int_generator</span><span class="special"><</span> |
| <span class="identifier">Num</span><span class="special">,</span> <span class="identifier">Radix</span><span class="special">,</span> <span class="identifier">force_sign</span> |
| <span class="special">>()</span></pre> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">Num</span></code>, attribute |
| is mandatory (otherwise compilation will fail) |
| </p> |
| </td> |
| </tr> |
| <tr> |
| <td> |
| <p> |
| |
| </p> |
| <pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">int_generator</span><span class="special"><</span> |
| <span class="identifier">Num</span><span class="special">,</span> <span class="identifier">Radix</span><span class="special">,</span> <span class="identifier">force_sign</span> |
| <span class="special">>()(</span><span class="identifier">num</span><span class="special">)</span></pre> |
| <p> |
| </p> |
| </td> |
| <td> |
| <p> |
| <code class="computeroutput"><span class="identifier">Num</span></code>, attribute |
| is optional, if it is supplied, the generator compares the |
| attribute with <code class="computeroutput"><span class="identifier">num</span></code> |
| and succeeds only if both are equal, failing otherwise. |
| </p> |
| </td> |
| </tr> |
| </tbody> |
| </table></div> |
| <div class="note"><table border="0" summary="Note"> |
| <tr> |
| <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../images/note.png"></td> |
| <th align="left">Note</th> |
| </tr> |
| <tr><td align="left" valign="top"><p> |
| In addition to their usual attribute of type <code class="computeroutput"><span class="identifier">Num</span></code> |
| all listed generators accept an instance of a <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special"><</span><span class="identifier">Num</span><span class="special">></span></code> as well. If the <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special"><></span></code> is initialized (holds a value) |
| the generators behave as if their attribute was an instance of <code class="computeroutput"><span class="identifier">Num</span></code> and emit the value stored in |
| the <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special"><></span></code>. |
| Otherwise the generators will fail. |
| </p></td></tr> |
| </table></div> |
| <a name="spirit.karma.reference.numeric.signed_int.complexity"></a><h6> |
| <a name="id1072167"></a> |
| <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.complexity">Complexity</a> |
| </h6> |
| <div class="blockquote"><blockquote class="blockquote"><p> |
| O(N), where <code class="computeroutput"><span class="identifier">N</span></code> is the |
| number of digits needed to represent the generated integer number |
| </p></blockquote></div> |
| <a name="spirit.karma.reference.numeric.signed_int.example"></a><h6> |
| <a name="id1072194"></a> |
| <a class="link" href="signed_int.html#spirit.karma.reference.numeric.signed_int.example">Example</a> |
| </h6> |
| <div class="note"><table border="0" summary="Note"> |
| <tr> |
| <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../images/note.png"></td> |
| <th align="left">Note</th> |
| </tr> |
| <tr><td align="left" valign="top"><p> |
| The test harness for the example(s) below is presented in the <a class="link" href="../karma_basics.html#spirit.karma.reference.karma_basics.examples">Basics Examples</a> |
| section. |
| </p></td></tr> |
| </table></div> |
| <p> |
| Some includes: |
| </p> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">spirit</span><span class="special">/</span><span class="identifier">include</span><span class="special">/</span><span class="identifier">karma</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">spirit</span><span class="special">/</span><span class="identifier">include</span><span class="special">/</span><span class="identifier">phoenix_core</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">spirit</span><span class="special">/</span><span class="identifier">include</span><span class="special">/</span><span class="identifier">phoenix_operator</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">fusion</span><span class="special">/</span><span class="identifier">include</span><span class="special">/</span><span class="identifier">std_pair</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">iostream</span><span class="special">></span> |
| <span class="preprocessor">#include</span> <span class="special"><</span><span class="identifier">string</span><span class="special">></span> |
| </pre> |
| <p> |
| </p> |
| <p> |
| Some using declarations: |
| </p> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">karma</span><span class="special">::</span><span class="identifier">int_</span><span class="special">;</span> |
| <span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">karma</span><span class="special">::</span><span class="identifier">lit</span><span class="special">;</span> |
| </pre> |
| <p> |
| </p> |
| <p> |
| Basic usage of an <code class="computeroutput"><span class="identifier">int_</span></code> |
| generator: |
| </p> |
| <p> |
| |
| </p> |
| <pre class="programlisting"><span class="identifier">test_generator</span><span class="special">(</span><span class="string">"-2"</span><span class="special">,</span> <span class="identifier">lit</span><span class="special">(-</span><span class="number">2</span><span class="special">));</span> |
| <span class="identifier">test_generator</span><span class="special">(</span><span class="string">"-2"</span><span class="special">,</span> <span class="identifier">int_</span><span class="special">(-</span><span class="number">2</span><span class="special">));</span> |
| <span class="identifier">test_generator_attr</span><span class="special">(</span><span class="string">"-2"</span><span class="special">,</span> <span class="identifier">int_</span><span class="special">(-</span><span class="number">2</span><span class="special">),</span> <span class="special">-</span><span class="number">2</span><span class="special">);</span> |
| <span class="identifier">test_generator_attr</span><span class="special">(</span><span class="string">""</span><span class="special">,</span> <span class="identifier">int_</span><span class="special">(-</span><span class="number">2</span><span class="special">),</span> <span class="number">3</span><span class="special">);</span> <span class="comment">// fails (as -2 != 3)! |
| </span><span class="identifier">test_generator_attr</span><span class="special">(</span><span class="string">"-2"</span><span class="special">,</span> <span class="identifier">int_</span><span class="special">,</span> <span class="special">-</span><span class="number">2</span><span class="special">);</span> |
| </pre> |
| <p> |
| </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 © 2001-2010 Joel de Guzman, Hartmut Kaiser<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"> |
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