1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Signed Integer Parsers (int_, etc.)</title> 5<link rel="stylesheet" href="../../../../../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="../../../../index.html" title="Spirit 2.5.8"> 8<link rel="up" href="../numeric.html" title="Numeric Parsers"> 9<link rel="prev" href="uint.html" title="Unsigned Integer Parsers (uint_, etc.)"> 10<link rel="next" href="real.html" title="Real Number Parsers (float_, double_, etc.)"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<table cellpadding="2" width="100%"><tr> 14<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../../../boost.png"></td> 15<td align="center"><a href="../../../../../../../../index.html">Home</a></td> 16<td align="center"><a href="../../../../../../../../libs/libraries.htm">Libraries</a></td> 17<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> 18<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> 19<td align="center"><a href="../../../../../../../../more/index.htm">More</a></td> 20</tr></table> 21<hr> 22<div class="spirit-nav"> 23<a accesskey="p" href="uint.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../numeric.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="real.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 24</div> 25<div class="section"> 26<div class="titlepage"><div><div><h5 class="title"> 27<a name="spirit.qi.reference.numeric.int"></a><a class="link" href="int.html" title="Signed Integer Parsers (int_, etc.)">Signed Integer Parsers 28 (<code class="computeroutput"><span class="identifier">int_</span></code>, etc.)</a> 29</h5></div></div></div> 30<h6> 31<a name="spirit.qi.reference.numeric.int.h0"></a> 32 <span class="phrase"><a name="spirit.qi.reference.numeric.int.description"></a></span><a class="link" href="int.html#spirit.qi.reference.numeric.int.description">Description</a> 33 </h6> 34<p> 35 The <code class="computeroutput"><span class="identifier">int_parser</span></code> can parse 36 signed integers of arbitrary length and size. This is almost the same 37 as the <code class="computeroutput"><span class="identifier">uint_parser</span></code>. The 38 only difference is the additional task of parsing the <code class="computeroutput"><span class="char">'+'</span></code> 39 or <code class="computeroutput"><span class="char">'-'</span></code> sign preceding the number. 40 The class interface is the same as that of the <code class="computeroutput"><span class="identifier">uint_parser</span></code>. 41 </p> 42<p> 43 The <code class="computeroutput"><span class="identifier">int_parser</span></code> parser 44 can be used to parse ordinary primitive C/C++ integers or even user defined 45 scalars such as bigints (unlimited precision integers) as long as the 46 type follows certain expression requirements (documented below). 47 </p> 48<h6> 49<a name="spirit.qi.reference.numeric.int.h1"></a> 50 <span class="phrase"><a name="spirit.qi.reference.numeric.int.header"></a></span><a class="link" href="int.html#spirit.qi.reference.numeric.int.header">Header</a> 51 </h6> 52<pre class="programlisting"><span class="comment">// forwards to <boost/spirit/home/qi/numeric/int.hpp></span> 53<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">qi_int</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span> 54</pre> 55<p> 56 Also, see <a class="link" href="../../../structure/include.html" title="Include">Include Structure</a>. 57 </p> 58<h6> 59<a name="spirit.qi.reference.numeric.int.h2"></a> 60 <span class="phrase"><a name="spirit.qi.reference.numeric.int.namespace"></a></span><a class="link" href="int.html#spirit.qi.reference.numeric.int.namespace">Namespace</a> 61 </h6> 62<div class="informaltable"><table class="table"> 63<colgroup><col></colgroup> 64<thead><tr><th> 65 <p> 66 Name 67 </p> 68 </th></tr></thead> 69<tbody> 70<tr><td> 71 <p> 72 <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: 73 boost::spirit::qi::lit</span></code> 74 </p> 75 </td></tr> 76<tr><td> 77 <p> 78 <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">// 79 alias: boost::spirit::qi::short_</span></code> 80 </p> 81 </td></tr> 82<tr><td> 83 <p> 84 <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: 85 boost::spirit::qi::int_</span></code> 86 </p> 87 </td></tr> 88<tr><td> 89 <p> 90 <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">// 91 alias: boost::spirit::qi::long_</span></code> 92 </p> 93 </td></tr> 94<tr><td> 95 <p> 96 <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">// 97 alias: boost::spirit::qi::long_long</span></code> 98 </p> 99 </td></tr> 100</tbody> 101</table></div> 102<div class="note"><table border="0" summary="Note"> 103<tr> 104<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../images/note.png"></td> 105<th align="left">Note</th> 106</tr> 107<tr><td align="left" valign="top"><p> 108 <code class="computeroutput"><span class="identifier">long_long</span></code> is only available 109 on platforms where the preprocessor constant <code class="computeroutput"><span class="identifier">BOOST_HAS_LONG_LONG</span></code> 110 is defined (i.e. on platforms having native support for <code class="computeroutput"><span class="keyword">signed</span> <span class="keyword">long</span> 111 <span class="keyword">long</span></code> (64 bit) unsigned integer 112 types). 113 </p></td></tr> 114</table></div> 115<div class="note"><table border="0" summary="Note"> 116<tr> 117<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../images/note.png"></td> 118<th align="left">Note</th> 119</tr> 120<tr><td align="left" valign="top"><p> 121 <code class="computeroutput"><span class="identifier">lit</span></code> is reused by the 122 <a class="link" href="../char/char.html" title="Character Parser (char_, lit)">Character Parsers</a>, 123 and the Numeric Parsers. In general, a char parser is created when 124 you pass in a character, and a numeric parser is created when you use 125 a numeric literal. 126 </p></td></tr> 127</table></div> 128<h6> 129<a name="spirit.qi.reference.numeric.int.h3"></a> 130 <span class="phrase"><a name="spirit.qi.reference.numeric.int.synopsis"></a></span><a class="link" href="int.html#spirit.qi.reference.numeric.int.synopsis">Synopsis</a> 131 </h6> 132<pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span> 133 <span class="keyword">typename</span> <span class="identifier">T</span> 134 <span class="special">,</span> <span class="keyword">unsigned</span> <span class="identifier">Radix</span> 135 <span class="special">,</span> <span class="keyword">unsigned</span> <span class="identifier">MinDigits</span> 136 <span class="special">,</span> <span class="keyword">int</span> <span class="identifier">MaxDigits</span><span class="special">></span> 137<span class="keyword">struct</span> <span class="identifier">int_parser</span><span class="special">;</span> 138</pre> 139<h6> 140<a name="spirit.qi.reference.numeric.int.h4"></a> 141 <span class="phrase"><a name="spirit.qi.reference.numeric.int.template_parameters"></a></span><a class="link" href="int.html#spirit.qi.reference.numeric.int.template_parameters">Template 142 parameters</a> 143 </h6> 144<div class="informaltable"><table class="table"> 145<colgroup> 146<col> 147<col> 148<col> 149</colgroup> 150<thead><tr> 151<th> 152 <p> 153 Parameter 154 </p> 155 </th> 156<th> 157 <p> 158 Description 159 </p> 160 </th> 161<th> 162 <p> 163 Default 164 </p> 165 </th> 166</tr></thead> 167<tbody> 168<tr> 169<td> 170 <p> 171 <code class="computeroutput"><span class="identifier">T</span></code> 172 </p> 173 </td> 174<td> 175 <p> 176 The numeric base type of the numeric parser. 177 </p> 178 </td> 179<td> 180 <p> 181 none 182 </p> 183 </td> 184</tr> 185<tr> 186<td> 187 <p> 188 <code class="computeroutput"><span class="identifier">Radix</span></code> 189 </p> 190 </td> 191<td> 192 <p> 193 The radix base. This can be any base from 2..10 and 16 194 </p> 195 </td> 196<td> 197 <p> 198 10 199 </p> 200 </td> 201</tr> 202<tr> 203<td> 204 <p> 205 <code class="computeroutput"><span class="identifier">MinDigits</span></code> 206 </p> 207 </td> 208<td> 209 <p> 210 The minimum number of digits allowable. 211 </p> 212 </td> 213<td> 214 <p> 215 1 216 </p> 217 </td> 218</tr> 219<tr> 220<td> 221 <p> 222 <code class="computeroutput"><span class="identifier">MaxDigits</span></code> 223 </p> 224 </td> 225<td> 226 <p> 227 The maximum number of digits allowable. If this is -1, then 228 the maximum limit becomes unbounded. 229 </p> 230 </td> 231<td> 232 <p> 233 -1 234 </p> 235 </td> 236</tr> 237</tbody> 238</table></div> 239<h6> 240<a name="spirit.qi.reference.numeric.int.h5"></a> 241 <span class="phrase"><a name="spirit.qi.reference.numeric.int.model_of"></a></span><a class="link" href="int.html#spirit.qi.reference.numeric.int.model_of">Model 242 of</a> 243 </h6> 244<div class="blockquote"><blockquote class="blockquote"><p> 245 <a class="link" href="../parser_concepts/primitiveparser.html" title="PrimitiveParser"><code class="computeroutput"><span class="identifier">PrimitiveParser</span></code></a> 246 </p></blockquote></div> 247<div class="variablelist"> 248<p class="title"><b>Notation</b></p> 249<dl class="variablelist"> 250<dt><span class="term"><code class="computeroutput"><span class="identifier">n</span></code></span></dt> 251<dd><p> 252 An object of <code class="computeroutput"><span class="identifier">T</span></code>, 253 the numeric base type. 254 </p></dd> 255<dt><span class="term"><code class="computeroutput"><span class="identifier">num</span></code></span></dt> 256<dd><p> 257 Numeric literal, any signed integer value, or a <a class="link" href="../basics.html#spirit.qi.reference.basics.lazy_argument">Lazy 258 Argument</a> that evaluates to a signed integer value. 259 </p></dd> 260</dl> 261</div> 262<h6> 263<a name="spirit.qi.reference.numeric.int.h6"></a> 264 <span class="phrase"><a name="spirit.qi.reference.numeric.int.expression_semantics"></a></span><a class="link" href="int.html#spirit.qi.reference.numeric.int.expression_semantics">Expression 265 Semantics</a> 266 </h6> 267<p> 268 Semantics of an expression is defined only where it differs from, or 269 is not defined in <a class="link" href="../parser_concepts/primitiveparser.html" title="PrimitiveParser"><code class="computeroutput"><span class="identifier">PrimitiveParser</span></code></a>. 270 </p> 271<div class="informaltable"><table class="table"> 272<colgroup> 273<col> 274<col> 275</colgroup> 276<thead><tr> 277<th> 278 <p> 279 Expression 280 </p> 281 </th> 282<th> 283 <p> 284 Semantics 285 </p> 286 </th> 287</tr></thead> 288<tbody> 289<tr> 290<td> 291 <p> 292</p> 293<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">short_</span> 294<span class="identifier">int_</span> 295<span class="identifier">long_</span> 296<span class="identifier">long_long</span> 297</pre> 298<p> 299 </p> 300 </td> 301<td> 302 <p> 303 Parse a signed integer using the default radix (10). 304 </p> 305 </td> 306</tr> 307<tr> 308<td> 309 <p> 310</p> 311<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">lit</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> 312<span class="identifier">short_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> 313<span class="identifier">int_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> 314<span class="identifier">long_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> 315<span class="identifier">long_long</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> 316</pre> 317<p> 318 </p> 319 </td> 320<td> 321 <p> 322 Match the literal <code class="computeroutput"><span class="identifier">num</span></code> 323 using the default radix (10). The parser will fail if the parsed 324 value is not equal to the specified value. 325 </p> 326 </td> 327</tr> 328<tr> 329<td> 330 <p> 331</p> 332<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">int_parser</span><span class="special"><</span> 333 <span class="identifier">T</span><span class="special">,</span> <span class="identifier">Radix</span><span class="special">,</span> <span class="identifier">MinDigits</span><span class="special">,</span> <span class="identifier">MaxDigits</span> 334<span class="special">>()</span> 335</pre> 336<p> 337 </p> 338 </td> 339<td> 340 <p> 341 Parse a signed integer of type <code class="computeroutput"><span class="identifier">T</span></code> 342 using radix <code class="computeroutput"><span class="identifier">Radix</span></code>, 343 with a minimum of <code class="computeroutput"><span class="identifier">MinDigits</span></code> 344 and a maximum of <code class="computeroutput"><span class="identifier">MaxDigits</span></code>. 345 </p> 346 </td> 347</tr> 348<tr> 349<td> 350 <p> 351</p> 352<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">int_parser</span><span class="special"><</span> 353 <span class="identifier">T</span><span class="special">,</span> <span class="identifier">Radix</span><span class="special">,</span> <span class="identifier">MinDigits</span><span class="special">,</span> <span class="identifier">MaxDigits</span> 354<span class="special">>()(</span><span class="identifier">num</span><span class="special">)</span> 355</pre> 356<p> 357 </p> 358 </td> 359<td> 360 <p> 361 Match the literal <code class="computeroutput"><span class="identifier">num</span></code> 362 of type <code class="computeroutput"><span class="identifier">T</span></code> using 363 radix <code class="computeroutput"><span class="identifier">Radix</span></code>, 364 with a minimum of <code class="computeroutput"><span class="identifier">MinDigits</span></code> 365 and a maximum of <code class="computeroutput"><span class="identifier">MaxDigits</span></code>. 366 The parser will fail if the parsed value is not equal to the 367 specified value. 368 </p> 369 </td> 370</tr> 371</tbody> 372</table></div> 373<div class="important"><table border="0" summary="Important"> 374<tr> 375<td rowspan="2" align="center" valign="top" width="25"><img alt="[Important]" src="../../../../images/important.png"></td> 376<th align="left">Important</th> 377</tr> 378<tr><td align="left" valign="top"><p> 379 All numeric parsers check for overflow conditions based on the type 380 <code class="computeroutput"><span class="identifier">T</span></code> the corresponding 381 <code class="computeroutput"><span class="identifier">int_parser</span><span class="special"><></span></code> 382 has been instantiated with. If the parsed number overflows this type 383 the parsing fails. Please be aware that the overflow check is not based 384 on the type of the supplied attribute but solely depends on the template 385 parameter <code class="computeroutput"><span class="identifier">T</span></code>. 386 </p></td></tr> 387</table></div> 388<h6> 389<a name="spirit.qi.reference.numeric.int.h7"></a> 390 <span class="phrase"><a name="spirit.qi.reference.numeric.int.attributes"></a></span><a class="link" href="int.html#spirit.qi.reference.numeric.int.attributes">Attributes</a> 391 </h6> 392<div class="informaltable"><table class="table"> 393<colgroup> 394<col> 395<col> 396</colgroup> 397<thead><tr> 398<th> 399 <p> 400 Expression 401 </p> 402 </th> 403<th> 404 <p> 405 Attribute 406 </p> 407 </th> 408</tr></thead> 409<tbody> 410<tr> 411<td> 412 <p> 413</p> 414<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">lit</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> 415</pre> 416<p> 417 </p> 418 </td> 419<td> 420 <p> 421 <code class="computeroutput"><span class="identifier">unused</span></code> 422 </p> 423 </td> 424</tr> 425<tr> 426<td> 427 <p> 428</p> 429<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">short_</span> 430<span class="identifier">short_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> 431</pre> 432<p> 433 </p> 434 </td> 435<td> 436 <p> 437 <code class="computeroutput"><span class="keyword">short</span></code> 438 </p> 439 </td> 440</tr> 441<tr> 442<td> 443 <p> 444</p> 445<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">int_</span> 446<span class="identifier">int_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> 447</pre> 448<p> 449 </p> 450 </td> 451<td> 452 <p> 453 <code class="computeroutput"><span class="keyword">int</span></code> 454 </p> 455 </td> 456</tr> 457<tr> 458<td> 459 <p> 460</p> 461<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">long_</span> 462<span class="identifier">long_</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> 463</pre> 464<p> 465 </p> 466 </td> 467<td> 468 <p> 469 <code class="computeroutput"><span class="keyword">long</span></code> 470 </p> 471 </td> 472</tr> 473<tr> 474<td> 475 <p> 476</p> 477<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">long_long</span> 478<span class="identifier">long_long</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span> 479</pre> 480<p> 481 </p> 482 </td> 483<td> 484 <p> 485 <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">long_long_type</span></code> 486 </p> 487 </td> 488</tr> 489<tr> 490<td> 491 <p> 492</p> 493<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">int_parser</span><span class="special"><</span> 494 <span class="identifier">T</span><span class="special">,</span> <span class="identifier">Radix</span><span class="special">,</span> <span class="identifier">MinDigits</span><span class="special">,</span> <span class="identifier">MaxDigits</span> 495<span class="special">>()</span> 496<span class="identifier">int_parser</span><span class="special"><</span> 497 <span class="identifier">T</span><span class="special">,</span> <span class="identifier">Radix</span><span class="special">,</span> <span class="identifier">MinDigits</span><span class="special">,</span> <span class="identifier">MaxDigits</span> 498<span class="special">>()(</span><span class="identifier">num</span><span class="special">)</span> 499</pre> 500<p> 501 </p> 502 </td> 503<td> 504 <p> 505 <code class="computeroutput"><span class="identifier">T</span></code> 506 </p> 507 </td> 508</tr> 509</tbody> 510</table></div> 511<h6> 512<a name="spirit.qi.reference.numeric.int.h8"></a> 513 <span class="phrase"><a name="spirit.qi.reference.numeric.int.complexity"></a></span><a class="link" href="int.html#spirit.qi.reference.numeric.int.complexity">Complexity</a> 514 </h6> 515<div class="blockquote"><blockquote class="blockquote"><p> 516 O(N), where N is the number of digits being parsed plus the sign. 517 </p></blockquote></div> 518<h6> 519<a name="spirit.qi.reference.numeric.int.h9"></a> 520 <span class="phrase"><a name="spirit.qi.reference.numeric.int.minimum_expression_requirements_for__code__phrase_role__identifier__t__phrase___code_"></a></span><a class="link" href="int.html#spirit.qi.reference.numeric.int.minimum_expression_requirements_for__code__phrase_role__identifier__t__phrase___code_">Minimum 521 Expression Requirements for <code class="computeroutput"><span class="identifier">T</span></code></a> 522 </h6> 523<p> 524 For the numeric base type, <code class="computeroutput"><span class="identifier">T</span></code>, 525 the expression requirements below must be valid: 526 </p> 527<div class="informaltable"><table class="table"> 528<colgroup> 529<col> 530<col> 531</colgroup> 532<thead><tr> 533<th> 534 <p> 535 Expression 536 </p> 537 </th> 538<th> 539 <p> 540 Semantics 541 </p> 542 </th> 543</tr></thead> 544<tbody> 545<tr> 546<td> 547 <p> 548 <code class="computeroutput"><span class="identifier">T</span><span class="special">()</span></code> 549 </p> 550 </td> 551<td> 552 <p> 553 Default construct. 554 </p> 555 </td> 556</tr> 557<tr> 558<td> 559 <p> 560 <code class="computeroutput"><span class="identifier">T</span><span class="special">(</span><span class="number">0</span><span class="special">)</span></code> 561 </p> 562 </td> 563<td> 564 <p> 565 Construct from an <code class="computeroutput"><span class="keyword">int</span></code>. 566 </p> 567 </td> 568</tr> 569<tr> 570<td> 571 <p> 572 <code class="computeroutput"><span class="identifier">n</span> <span class="special">+</span> 573 <span class="identifier">n</span></code> 574 </p> 575 </td> 576<td> 577 <p> 578 Addition. 579 </p> 580 </td> 581</tr> 582<tr> 583<td> 584 <p> 585 <code class="computeroutput"><span class="identifier">n</span> <span class="special">-</span> 586 <span class="identifier">n</span></code> 587 </p> 588 </td> 589<td> 590 <p> 591 Subtraction. 592 </p> 593 </td> 594</tr> 595<tr> 596<td> 597 <p> 598 <code class="computeroutput"><span class="identifier">n</span> <span class="special">*</span> 599 <span class="identifier">n</span></code> 600 </p> 601 </td> 602<td> 603 <p> 604 Multiplication. 605 </p> 606 </td> 607</tr> 608<tr> 609<td> 610 <p> 611 <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">numeric_limits</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">is_bounded</span></code> 612 </p> 613 </td> 614<td> 615 <p> 616 <code class="computeroutput"><span class="keyword">true</span></code> or <code class="computeroutput"><span class="keyword">false</span></code> if <code class="computeroutput"><span class="identifier">T</span></code> 617 bounded. 618 </p> 619 </td> 620</tr> 621<tr> 622<td> 623 <p> 624 <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">numeric_limits</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">digits</span></code> 625 </p> 626 </td> 627<td> 628 <p> 629 Maximum Digits for <code class="computeroutput"><span class="identifier">T</span></code>, 630 radix digits. Required only if <code class="computeroutput"><span class="identifier">T</span></code> 631 is bounded. 632 </p> 633 </td> 634</tr> 635<tr> 636<td> 637 <p> 638 <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">numeric_limits</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">digits10</span></code> 639 </p> 640 </td> 641<td> 642 <p> 643 Maximum Digits for <code class="computeroutput"><span class="identifier">T</span></code>, 644 base 10. Required only if <code class="computeroutput"><span class="identifier">T</span></code> 645 is bounded. 646 </p> 647 </td> 648</tr> 649<tr> 650<td> 651 <p> 652 <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">numeric_limits</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">max</span><span class="special">()</span></code> 653 </p> 654 </td> 655<td> 656 <p> 657 Maximum value for <code class="computeroutput"><span class="identifier">T</span></code>. 658 Required only if <code class="computeroutput"><span class="identifier">T</span></code> 659 is bounded. 660 </p> 661 </td> 662</tr> 663<tr> 664<td> 665 <p> 666 <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">numeric_limits</span><span class="special"><</span><span class="identifier">T</span><span class="special">>::</span><span class="identifier">min</span><span class="special">()</span></code> 667 </p> 668 </td> 669<td> 670 <p> 671 Minimum value for <code class="computeroutput"><span class="identifier">T</span></code>. 672 Required only if <code class="computeroutput"><span class="identifier">T</span></code> 673 is bounded. 674 </p> 675 </td> 676</tr> 677</tbody> 678</table></div> 679<h6> 680<a name="spirit.qi.reference.numeric.int.h10"></a> 681 <span class="phrase"><a name="spirit.qi.reference.numeric.int.example"></a></span><a class="link" href="int.html#spirit.qi.reference.numeric.int.example">Example</a> 682 </h6> 683<div class="note"><table border="0" summary="Note"> 684<tr> 685<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../images/note.png"></td> 686<th align="left">Note</th> 687</tr> 688<tr><td align="left" valign="top"><p> 689 The test harness for the example(s) below is presented in the <a class="link" href="../basics.html#spirit.qi.reference.basics.examples">Basics Examples</a> 690 section. 691 </p></td></tr> 692</table></div> 693<p> 694 Some using declarations: 695 </p> 696<p> 697</p> 698<pre class="programlisting"><span class="keyword">using</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">phoenix</span><span class="special">::</span><span class="identifier">val</span><span class="special">;</span> 699<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">qi</span><span class="special">::</span><span class="identifier">lit</span><span class="special">;</span> 700<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">qi</span><span class="special">::</span><span class="identifier">int_</span><span class="special">;</span> 701</pre> 702<p> 703 </p> 704<p> 705 Basic signed integers: 706 </p> 707<p> 708</p> 709<pre class="programlisting"><span class="comment">// signed int</span> 710<span class="identifier">test_parser</span><span class="special">(</span><span class="string">"+12345"</span><span class="special">,</span> <span class="identifier">int_</span><span class="special">);</span> 711<span class="identifier">test_parser</span><span class="special">(</span><span class="string">"-12345"</span><span class="special">,</span> <span class="identifier">int_</span><span class="special">);</span> 712<span class="identifier">test_parser</span><span class="special">(</span><span class="string">"+12345"</span><span class="special">,</span> <span class="identifier">int_</span><span class="special">(</span><span class="number">12345</span><span class="special">));</span> 713<span class="identifier">test_parser</span><span class="special">(</span><span class="string">"-12345"</span><span class="special">,</span> <span class="identifier">int_</span><span class="special">(-</span><span class="number">12345</span><span class="special">));</span> 714<span class="identifier">test_parser</span><span class="special">(</span><span class="string">"+12345"</span><span class="special">,</span> <span class="identifier">int_</span><span class="special">(</span><span class="identifier">val</span><span class="special">(</span><span class="number">12345</span><span class="special">)));</span> 715<span class="identifier">test_parser</span><span class="special">(</span><span class="string">"-12345"</span><span class="special">,</span> <span class="identifier">int_</span><span class="special">(</span><span class="identifier">val</span><span class="special">(-</span><span class="number">12345</span><span class="special">)));</span> 716 717<span class="comment">// literals</span> 718<span class="identifier">test_parser</span><span class="special">(</span><span class="string">"+12345"</span><span class="special">,</span> <span class="identifier">lit</span><span class="special">(</span><span class="number">12345</span><span class="special">));</span> 719<span class="identifier">test_parser</span><span class="special">(</span><span class="string">"-12345"</span><span class="special">,</span> <span class="identifier">lit</span><span class="special">(-</span><span class="number">12345</span><span class="special">));</span> 720<span class="identifier">test_parser</span><span class="special">(</span><span class="string">"+12345"</span><span class="special">,</span> <span class="identifier">lit</span><span class="special">(</span><span class="identifier">val</span><span class="special">(</span><span class="number">12345</span><span class="special">)));</span> 721<span class="identifier">test_parser</span><span class="special">(</span><span class="string">"-12345"</span><span class="special">,</span> <span class="identifier">lit</span><span class="special">(</span><span class="identifier">val</span><span class="special">(-</span><span class="number">12345</span><span class="special">)));</span> 722</pre> 723<p> 724 </p> 725</div> 726<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 727<td align="left"></td> 728<td align="right"><div class="copyright-footer">Copyright © 2001-2011 Joel de Guzman, Hartmut Kaiser<p> 729 Distributed under the Boost Software License, Version 1.0. (See accompanying 730 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>) 731 </p> 732</div></td> 733</tr></table> 734<hr> 735<div class="spirit-nav"> 736<a accesskey="p" href="uint.html"><img src="../../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../numeric.html"><img src="../../../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../../../index.html"><img src="../../../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="real.html"><img src="../../../../../../../../doc/src/images/next.png" alt="Next"></a> 737</div> 738</body> 739</html> 740
