1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
|
<!DOCTYPE html>
<html lang="en" dir="ltr" class="client-nojs">
<head>
<title>operator+,-,*,/,%(std::chrono::duration) - cppreference.com</title>
<meta charset="UTF-8" />
<meta name="generator" content="MediaWiki 1.21.2" />
<link rel="alternate" type="application/x-wiki" title="Edit" href="http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&action=edit" />
<link rel="edit" title="Edit" href="http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&action=edit" />
<link rel="shortcut icon" href="../../../../favicon.ico" />
<link rel="search" type="application/opensearchdescription+xml" href="../../../../mwiki/opensearch_desc.php" title="cppreference.com (en)" />
<link rel="EditURI" type="application/rsd+xml" href="http://en.cppreference.com/mwiki/api.php?action=rsd" />
<link rel="alternate" type="application/atom+xml" title="cppreference.com Atom feed" href="http://en.cppreference.com/mwiki/index.php?title=Special:RecentChanges&feed=atom" />
<link rel="stylesheet" href="../../../../mwiki/load.php%3Fdebug=false&lang=en&modules=ext.gadget.ColiruCompiler%257Cext.rtlcite%257Cmediawiki.legacy.commonPrint%252Cshared%257Cskins.cppreference2&only=styles&skin=cppreference2&*.css" />
<meta name="ResourceLoaderDynamicStyles" content="" />
<link rel="stylesheet" href="../../../../mwiki/load.php%3Fdebug=false&lang=en&modules=site&only=styles&skin=cppreference2&*.css" />
<style>a:lang(ar),a:lang(ckb),a:lang(fa),a:lang(kk-arab),a:lang(mzn),a:lang(ps),a:lang(ur){text-decoration:none}#toc{display:none}.editsection{display:none}
/* cache key: mwiki1-mwiki_en_:resourceloader:filter:minify-css:7:472787eddcf4605d11de8c7ef047234f */</style>
<script src="../../../../mwiki/load.php%3Fdebug=false&lang=en&modules=startup&only=scripts&skin=cppreference2&*"></script>
<script>if(window.mw){
mw.config.set({"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"cpp/chrono/duration/operator_arith4","wgTitle":"cpp/chrono/duration/operator arith4","wgCurRevisionId":81529,"wgArticleId":9399,"wgIsArticle":true,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Todo with reason"],"wgBreakFrames":false,"wgPageContentLanguage":"en","wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgMonthNamesShort":["","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],"wgRelevantPageName":"cpp/chrono/duration/operator_arith4","wgRestrictionEdit":[],"wgRestrictionMove":[]});
}</script><script>if(window.mw){
mw.loader.implement("user.options",function(){mw.user.options.set({"ccmeonemails":0,"cols":80,"date":"default","diffonly":0,"disablemail":0,"disablesuggest":0,"editfont":"default","editondblclick":0,"editsection":0,"editsectiononrightclick":0,"enotifminoredits":0,"enotifrevealaddr":0,"enotifusertalkpages":1,"enotifwatchlistpages":0,"extendwatchlist":0,"externaldiff":0,"externaleditor":0,"fancysig":0,"forceeditsummary":0,"gender":"unknown","hideminor":0,"hidepatrolled":0,"imagesize":2,"justify":0,"math":1,"minordefault":0,"newpageshidepatrolled":0,"nocache":0,"noconvertlink":0,"norollbackdiff":0,"numberheadings":0,"previewonfirst":0,"previewontop":1,"quickbar":5,"rcdays":7,"rclimit":50,"rememberpassword":0,"rows":25,"searchlimit":20,"showhiddencats":0,"showjumplinks":1,"shownumberswatching":1,"showtoc":0,"showtoolbar":1,"skin":"cppreference2","stubthreshold":0,"thumbsize":2,"underline":2,"uselivepreview":0,"usenewrc":0,"watchcreations":0,"watchdefault":0,"watchdeletion":0,
"watchlistdays":3,"watchlisthideanons":0,"watchlisthidebots":0,"watchlisthideliu":0,"watchlisthideminor":0,"watchlisthideown":0,"watchlisthidepatrolled":0,"watchmoves":0,"wllimit":250,"variant":"en","language":"en","searchNs0":true,"searchNs1":false,"searchNs2":false,"searchNs3":false,"searchNs4":false,"searchNs5":false,"searchNs6":false,"searchNs7":false,"searchNs8":false,"searchNs9":false,"searchNs10":false,"searchNs11":false,"searchNs12":false,"searchNs13":false,"searchNs14":false,"searchNs15":false,"gadget-ColiruCompiler":1});;},{},{});mw.loader.implement("user.tokens",function(){mw.user.tokens.set({"editToken":"+\\","patrolToken":false,"watchToken":false});;},{},{});
/* cache key: mwiki1-mwiki_en_:resourceloader:filter:minify-js:7:ca03345b1e2c4d90a25d968753a73b92 */
}</script>
<script>if(window.mw){
mw.loader.load(["mediawiki.page.startup","mediawiki.legacy.wikibits","mediawiki.legacy.ajax"]);
}</script>
<style type="text/css">/*<![CDATA[*/
.source-cpp {line-height: normal;}
.source-cpp li, .source-cpp pre {
line-height: normal; border: 0px none white;
}
/**
* GeSHi Dynamically Generated Stylesheet
* --------------------------------------
* Dynamically generated stylesheet for cpp
* CSS class: source-cpp, CSS id:
* GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann
* (http://qbnz.com/highlighter/ and http://geshi.org/)
* --------------------------------------
*/
.cpp.source-cpp .de1, .cpp.source-cpp .de2 {font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;}
.cpp.source-cpp {font-family:monospace;}
.cpp.source-cpp .imp {font-weight: bold; color: red;}
.cpp.source-cpp li, .cpp.source-cpp .li1 {font-weight: normal; vertical-align:top;}
.cpp.source-cpp .ln {width:1px;text-align:right;margin:0;padding:0 2px;vertical-align:top;}
.cpp.source-cpp .li2 {font-weight: bold; vertical-align:top;}
.cpp.source-cpp .kw1 {color: #0000dd;}
.cpp.source-cpp .kw2 {color: #0000ff;}
.cpp.source-cpp .kw3 {color: #0000dd;}
.cpp.source-cpp .kw4 {color: #0000ff;}
.cpp.source-cpp .co1 {color: #909090;}
.cpp.source-cpp .co2 {color: #339900;}
.cpp.source-cpp .coMULTI {color: #ff0000; font-style: italic;}
.cpp.source-cpp .es0 {color: #008000; font-weight: bold;}
.cpp.source-cpp .es1 {color: #008000; font-weight: bold;}
.cpp.source-cpp .es2 {color: #008000; font-weight: bold;}
.cpp.source-cpp .es3 {color: #008000; font-weight: bold;}
.cpp.source-cpp .es4 {color: #008000; font-weight: bold;}
.cpp.source-cpp .es5 {color: #008000; font-weight: bold;}
.cpp.source-cpp .br0 {color: #008000;}
.cpp.source-cpp .sy0 {color: #008000;}
.cpp.source-cpp .sy1 {color: #000080;}
.cpp.source-cpp .sy2 {color: #000040;}
.cpp.source-cpp .sy3 {color: #000040;}
.cpp.source-cpp .sy4 {color: #008080;}
.cpp.source-cpp .st0 {color: #008000;}
.cpp.source-cpp .nu0 {color: #000080;}
.cpp.source-cpp .nu6 {color: #000080;}
.cpp.source-cpp .nu8 {color: #000080;}
.cpp.source-cpp .nu12 {color: #000080;}
.cpp.source-cpp .nu16 {color:#000080;}
.cpp.source-cpp .nu17 {color:#000080;}
.cpp.source-cpp .nu18 {color:#000080;}
.cpp.source-cpp .nu19 {color:#000080;}
.cpp.source-cpp .ln-xtra, .cpp.source-cpp li.ln-xtra, .cpp.source-cpp div.ln-xtra {background-color: #ffc;}
.cpp.source-cpp span.xtra { display:block; }
/*]]>*/
</style><style type="text/css">/*<![CDATA[*/
.source-text {line-height: normal;}
.source-text li, .source-text pre {
line-height: normal; border: 0px none white;
}
/**
* GeSHi Dynamically Generated Stylesheet
* --------------------------------------
* Dynamically generated stylesheet for text
* CSS class: source-text, CSS id:
* GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann
* (http://qbnz.com/highlighter/ and http://geshi.org/)
* --------------------------------------
*/
.text.source-text .de1, .text.source-text .de2 {font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;}
.text.source-text {font-family:monospace;}
.text.source-text .imp {font-weight: bold; color: red;}
.text.source-text li, .text.source-text .li1 {font-weight: normal; vertical-align:top;}
.text.source-text .ln {width:1px;text-align:right;margin:0;padding:0 2px;vertical-align:top;}
.text.source-text .li2 {font-weight: bold; vertical-align:top;}
.text.source-text .ln-xtra, .text.source-text li.ln-xtra, .text.source-text div.ln-xtra {background-color: #ffc;}
.text.source-text span.xtra { display:block; }
/*]]>*/
</style><!--[if lt IE 7]><style type="text/css">body{behavior:url("/mwiki/skins/cppreference2/csshover.min.htc")}</style><![endif]--></head>
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_chrono_duration_operator_arith4 skin-cppreference2 action-view cpp-navbar">
<!-- header -->
<div id="mw-head" class="noprint">
<div id="cpp-head-first-base">
<div id="cpp-head-first">
<h5><a href="../../../../index.html">
cppreference.com </a></h5>
<div id="cpp-head-search">
<!-- 0 -->
<div id="p-search">
<h5><label for="searchInput">Search</label></h5>
<form action="http://en.cppreference.com/mwiki/index.php" id="searchform">
<input type='hidden' name="title" value="Special:Search"/>
<div id="simpleSearch">
<input name="search" title="Search cppreference.com [f]" accesskey="f" id="searchInput" /> <button type="submit" name="button" title="Search the pages for this text" id="searchButton"><img src="../../../../mwiki/skins/cppreference2/images/search-ltr.png%3F303" alt="Search" /></button> </div>
</form>
</div>
<!-- /0 -->
</div>
<div id="cpp-head-personal">
<!-- 0 -->
<div id="p-personal" class="">
<span id="pt-createaccount"><a href="http://en.cppreference.com/mwiki/index.php?title=Special:UserLogin&returnto=cpp%2Fchrono%2Fduration%2Foperator+arith4&type=signup">Create account</a></span> <div class="menu">
<ul>
<li id="pt-login"><a href="http://en.cppreference.com/mwiki/index.php?title=Special:UserLogin&returnto=cpp%2Fchrono%2Fduration%2Foperator+arith4" title="You are encouraged to log in; however, it is not mandatory [o]" accesskey="o">Log in</a></li> </ul>
</div>
</div>
<!-- /0 -->
</div>
</div>
</div>
<div id="cpp-head-second-base">
<div id="cpp-head-second">
<div id="cpp-head-tools-left">
<!-- 0 -->
<div id="p-namespaces" class="vectorTabs">
<h5>Namespaces</h5>
<ul>
<li id="ca-nstab-main" class="selected"><span><a href="operator_arith4.html" title="View the content page [c]" accesskey="c">Page</a></span></li>
<li id="ca-talk" class="new"><span><a href="http://en.cppreference.com/mwiki/index.php?title=Talk:cpp/chrono/duration/operator_arith4&action=edit&redlink=1" title="Discussion about the content page [t]" accesskey="t">Discussion</a></span></li>
</ul>
</div>
<!-- /0 -->
<!-- 1 -->
<div id="p-variants" class="vectorMenu emptyPortlet">
<h5><span>Variants</span><a href="operator_arith4.html#"></a></h5>
<div class="menu">
<ul>
</ul>
</div>
</div>
<!-- /1 -->
</div>
<div id="cpp-head-tools-right">
<!-- 0 -->
<div id="p-views" class="vectorTabs">
<h5>Views</h5>
<ul>
<li id="ca-view" class="selected"><span><a href="operator_arith4.html" >View</a></span></li>
<li id="ca-edit"><span><a href="http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&action=edit" title="You can edit this page. Please use the preview button before saving [e]" accesskey="e">Edit</a></span></li>
<li id="ca-history" class="collapsible"><span><a href="http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&action=history" title="Past revisions of this page [h]" accesskey="h">History</a></span></li>
</ul>
</div>
<!-- /0 -->
<!-- 1 -->
<div id="p-cactions" class="vectorMenu emptyPortlet">
<h5><span>Actions</span><a href="operator_arith4.html#"></a></h5>
<div class="menu">
<ul>
</ul>
</div>
</div>
<!-- /1 -->
</div>
</div>
</div>
</div>
<!-- /header -->
<!-- content -->
<div id="cpp-content-base">
<div id="content">
<a id="top"></a>
<div id="mw-js-message" style="display:none;"></div>
<!-- firstHeading -->
<h1 id="firstHeading" class="firstHeading">operator+,-,*,/,%<small>(std::chrono::duration)</small></h1>
<!-- /firstHeading -->
<!-- bodyContent -->
<div id="bodyContent">
<!-- tagline -->
<div id="siteSub">From cppreference.com</div>
<!-- /tagline -->
<!-- subtitle -->
<div id="contentSub"><span class="subpages">< <a href="../../../cpp.html" title="cpp">cpp</a>‎ | <a href="../../chrono.html" title="cpp/chrono">chrono</a>‎ | <a href="../duration.html" title="cpp/chrono/duration">duration</a></span></div>
<!-- /subtitle -->
<!-- bodycontent -->
<div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"><div class="t-navbar" style=""><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../../../cpp.html" title="cpp"> C++</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="line-height:1.1em;">
<tr class="t-nv"><td colspan="5"> <a href="../../language.1.html" title="cpp/language"> Language</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../header.html" title="cpp/header"> Standard library headers</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../concept.html" title="cpp/concept"> Concepts</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../utility.html" title="cpp/utility"> Utilities library</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../string.html" title="cpp/string"> Strings library</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../container.html" title="cpp/container"> Containers library</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../algorithm.html" title="cpp/algorithm"> Algorithms library</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../iterator.html" title="cpp/iterator"> Iterators library</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../numeric.html" title="cpp/numeric"> Numerics library</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../io.html" title="cpp/io"> Input/output library</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../locale.html" title="cpp/locale"> Localizations library</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../regex.html" title="cpp/regex"> Regular expressions library</a> <span class="t-mark-rev t-since-cxx11">(C++11)</span> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../atomic.html" title="cpp/atomic"> Atomic operations library</a> <span class="t-mark-rev t-since-cxx11">(C++11)</span> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../thread.html" title="cpp/thread"> Thread support library</a> <span class="t-mark-rev t-since-cxx11">(C++11)</span> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../experimental.html" title="cpp/experimental"> Technical Specifications</a> </td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../../utility.html" title="cpp/utility"> Utilities library</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"> <a href="../../types.html" title="cpp/types"> Type support</a> (basic types, RTTI, type traits) </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../memory.html" title="cpp/memory"> Dynamic memory management</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../error.html" title="cpp/error"> Error handling</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../utility/program.html" title="cpp/utility/program"> Program utilities</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../utility/variadic.html" title="cpp/utility/variadic"> Variadic functions</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../chrono.html" title="cpp/chrono"> Date and time</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../../utility/functional.html" title="cpp/utility/functional"> Function objects</a> </td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/initializer_list.html" title="cpp/utility/initializer list"><span class="t-lines"><span>initializer_list</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/bitset.html" title="cpp/utility/bitset"><span class="t-lines"><span>bitset</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/hash.html" title="cpp/utility/hash"><span class="t-lines"><span>hash</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Relational operators</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/rel_ops/operator_cmp.html" title="cpp/utility/rel ops/operator cmp"><span class="t-lines"><span>rel_ops::operator!=</span><span>rel_ops::operator></span><span>rel_ops::operator<=</span><span>rel_ops::operator>=</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Pairs and tuples</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/pair.html" title="cpp/utility/pair"><span class="t-lines"><span>pair</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/tuple.html" title="cpp/utility/tuple"><span class="t-lines"><span>tuple</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/piecewise_construct_t.html" title="cpp/utility/piecewise construct t"><span class="t-lines"><span>piecewise_construct_t</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/piecewise_construct.html" title="cpp/utility/piecewise construct"><span class="t-lines"><span>piecewise_construct</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/integer_sequence.html" title="cpp/utility/integer sequence"><span class="t-lines"><span>integer_sequence</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Swap, forward and move</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../algorithm/swap.html" title="cpp/algorithm/swap"><span class="t-lines"><span>swap</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/exchange.html" title="cpp/utility/exchange"><span class="t-lines"><span>exchange</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/forward.html" title="cpp/utility/forward"><span class="t-lines"><span>forward</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/move.html" title="cpp/utility/move"><span class="t-lines"><span>move</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/move_if_noexcept.html" title="cpp/utility/move if noexcept"><span class="t-lines"><span>move_if_noexcept</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Type operations</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/declval.html" title="cpp/utility/declval"><span class="t-lines"><span>declval</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../../utility/as_const.html" title="cpp/utility/as const"><span class="t-lines"><span>as_const</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/utility/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../../chrono.html" title="cpp/chrono">Date and time utilities</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../time_point.html" title="cpp/chrono/time point"><span class="t-lines"><span>time_point</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../duration.html" title="cpp/chrono/duration"><span class="t-lines"><span>duration</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../system_clock.html" title="cpp/chrono/system clock"><span class="t-lines"><span>system_clock</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../steady_clock.html" title="cpp/chrono/steady clock"><span class="t-lines"><span>steady_clock</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../high_resolution_clock.html" title="cpp/chrono/high resolution clock"><span class="t-lines"><span>high_resolution_clock</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../c.html" title="cpp/chrono/c"> C-style date and time</a></td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/chrono/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div><div class="t-navbar-head"><a href="../duration.html" title="cpp/chrono/duration"><tt>std::chrono::duration</tt></a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv-h1"><td colspan="5"> Member functions</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="duration.html" title="cpp/chrono/duration/duration"><span class="t-lines"><span>duration::duration</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator=.html" title="cpp/chrono/duration/operator="><span class="t-lines"><span>duration::operator=</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="count.html" title="cpp/chrono/duration/count"><span class="t-lines"><span>duration::count</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="zero.html" title="cpp/chrono/duration/zero"><span class="t-lines"><span>duration::zero</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="min.html" title="cpp/chrono/duration/min"><span class="t-lines"><span>duration::min</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="max.html" title="cpp/chrono/duration/max"><span class="t-lines"><span>duration::max</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator_arith.html" title="cpp/chrono/duration/operator arith"><span class="t-lines"><span>duration::operator+</span><span>duration::operator-</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator_arith2.html" title="cpp/chrono/duration/operator arith2"><span class="t-lines"><span>duration::operator++</span><span>duration::operator--</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator_arith3.html" title="cpp/chrono/duration/operator arith3"><span class="t-lines"><span>duration::operator+=</span><span>duration::operator-=</span><span>duration::operator*=</span><span>duration::operator/=</span><span>duration::operator%=</span></span></a></div></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Non-member functions</td></tr>
<tr class="t-nv-col-table"><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><strong class="selflink"><span class="t-lines"><span>operator+</span><span>operator-</span><span>operator*</span><span>operator/</span><span>operator%</span></span></strong></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="operator_cmp.html" title="cpp/chrono/duration/operator cmp"><span class="t-lines"><span>operator==</span><span>operator!=</span><span>operator<</span><span>operator<=</span><span>operator></span><span>operator>=</span></span></a></div></div></td></tr>
</table></div></td><td><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="common_type.html" title="cpp/chrono/duration/common type"><span class="t-lines"><span>common_type</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="duration_cast.html" title="cpp/chrono/duration/duration cast"><span class="t-lines"><span>duration_cast</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="floor.html" title="cpp/chrono/duration/floor"><span class="t-lines"><span>floor</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="ceil.html" title="cpp/chrono/duration/ceil"><span class="t-lines"><span>ceil</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="round.html" title="cpp/chrono/duration/round"><span class="t-lines"><span>round</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="abs.html" title="cpp/chrono/duration/abs"><span class="t-lines"><span>abs</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../operator""h.html" title="cpp/chrono/operator""h"><span class="t-lines"><span>operator""h</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../operator""min.html" title="cpp/chrono/operator""min"><span class="t-lines"><span>operator""min</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../operator""s.html" title="cpp/chrono/operator""s"><span class="t-lines"><span>operator""s</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../operator""ms.html" title="cpp/chrono/operator""ms"><span class="t-lines"><span>operator""ms</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../operator""us.html" title="cpp/chrono/operator""us"><span class="t-lines"><span>operator""us</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../operator""ns.html" title="cpp/chrono/operator""ns"><span class="t-lines"><span>operator""ns</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx14">(C++14)</span></span></span></div></div></td></tr>
</table></div></td></tr>
<tr class="t-nv-h1"><td colspan="5"> Helper classes</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../treat_as_floating_point.html" title="cpp/chrono/treat as floating point"><span class="t-lines"><span>treat_as_floating_point</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../duration_values.html" title="cpp/chrono/duration values"><span class="t-lines"><span>duration_values</span></span></a></div></div></td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/chrono/duration/navbar_content&action=edit">[edit]</a></span></div></div></div></div><div class="t-navbar-sep"> </div></div>
<table class="t-dcl-begin"><tbody>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> Rep1, <span class="kw1">class</span> Period1, <span class="kw1">class</span> Rep2, <span class="kw1">class</span> Period2 <span class="sy1">></span><br />
<p><span class="kw1">typename</span> <a href="../../types/common_type.html"><span class="kw547">std::<span class="me2">common_type</span></span></a><span class="sy1"><</span>duration<span class="sy1"><</span>Rep1,Period1<span class="sy1">></span>, duration<span class="sy1"><</span>Rep2,Period2<span class="sy1">>></span><span class="sy4">::</span><span class="me2">type</span><br />
    <span class="kw4">constexpr</span> operator<span class="sy2">+</span><span class="br0">(</span> <span class="kw4">const</span> duration<span class="sy1"><</span>Rep1,Period1<span class="sy1">></span><span class="sy3">&</span> lhs,<br />
</p>
                         <span class="kw4">const</span> duration<span class="sy1"><</span>Rep2,Period2<span class="sy1">></span><span class="sy3">&</span> rhs <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (1) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> Rep1, <span class="kw1">class</span> Period1, <span class="kw1">class</span> Rep2, <span class="kw1">class</span> Period2 <span class="sy1">></span><br />
<p><span class="kw1">typename</span> <a href="../../types/common_type.html"><span class="kw547">std::<span class="me2">common_type</span></span></a><span class="sy1"><</span>duration<span class="sy1"><</span>Rep1,Period1<span class="sy1">></span>, duration<span class="sy1"><</span>Rep2,Period2<span class="sy1">>></span><span class="sy4">::</span><span class="me2">type</span><br />
    <span class="kw4">constexpr</span> operator<span class="sy2">-</span><span class="br0">(</span> <span class="kw4">const</span> duration<span class="sy1"><</span>Rep1,Period1<span class="sy1">></span><span class="sy3">&</span> lhs,<br />
</p>
                         <span class="kw4">const</span> duration<span class="sy1"><</span>Rep2,Period2<span class="sy1">></span><span class="sy3">&</span> rhs <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (2) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> Rep1, <span class="kw1">class</span> Period, <span class="kw1">class</span> Rep2 <span class="sy1">></span><br />
<p>duration<span class="sy1"><</span><span class="kw1">typename</span> <a href="../../types/common_type.html"><span class="kw547">std::<span class="me2">common_type</span></span></a><span class="sy1"><</span>Rep1,Rep2<span class="sy1">></span><span class="sy4">::</span><span class="me2">type</span>, Period<span class="sy1">></span><br />
    <span class="kw4">constexpr</span> operator<span class="sy2">*</span><span class="br0">(</span> <span class="kw4">const</span> duration<span class="sy1"><</span>Rep1,Period<span class="sy1">></span><span class="sy3">&</span> d,<br />
</p>
                         <span class="kw4">const</span> Rep2<span class="sy3">&</span> s <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (3) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> Rep1, <span class="kw1">class</span> Rep2, <span class="kw1">class</span> Period <span class="sy1">></span><br />
<p>duration<span class="sy1"><</span><span class="kw1">typename</span> <a href="../../types/common_type.html"><span class="kw547">std::<span class="me2">common_type</span></span></a><span class="sy1"><</span>Rep1,Rep2<span class="sy1">></span><span class="sy4">::</span><span class="me2">type</span>, Period<span class="sy1">></span><br />
    <span class="kw4">constexpr</span> operator<span class="sy2">*</span><span class="br0">(</span> <span class="kw4">const</span> Rep1<span class="sy3">&</span> s,<br />
</p>
                         <span class="kw4">const</span> duration<span class="sy1"><</span>Rep2,Period<span class="sy1">></span><span class="sy3">&</span> d <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (4) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> Rep1, <span class="kw1">class</span> Period, <span class="kw1">class</span> Rep2 <span class="sy1">></span><br />
<p>duration<span class="sy1"><</span><span class="kw1">typename</span> <a href="../../types/common_type.html"><span class="kw547">std::<span class="me2">common_type</span></span></a><span class="sy1"><</span>Rep1,Rep2<span class="sy1">></span><span class="sy4">::</span><span class="me2">type</span>, Period<span class="sy1">></span><br />
    <span class="kw4">constexpr</span> operator<span class="sy2">/</span><span class="br0">(</span> <span class="kw4">const</span> duration<span class="sy1"><</span>Rep1,Period<span class="sy1">></span><span class="sy3">&</span> d,<br />
</p>
                         <span class="kw4">const</span> Rep2<span class="sy3">&</span> s <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (5) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> Rep1, <span class="kw1">class</span> Period1, <span class="kw1">class</span> Rep2, <span class="kw1">class</span> Period2 <span class="sy1">></span><br />
<p><span class="kw1">typename</span> <a href="../../types/common_type.html"><span class="kw547">std::<span class="me2">common_type</span></span></a><span class="sy1"><</span>Rep1,Rep2<span class="sy1">></span><span class="sy4">::</span><span class="me2">type</span><br />
    <span class="kw4">constexpr</span> operator<span class="sy2">/</span><span class="br0">(</span> <span class="kw4">const</span> duration<span class="sy1"><</span>Rep1,Period1<span class="sy1">></span><span class="sy3">&</span> lhs,<br />
</p>
                         <span class="kw4">const</span> duration<span class="sy1"><</span>Rep2,Period2<span class="sy1">></span><span class="sy3">&</span> rhs <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (6) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> Rep1, <span class="kw1">class</span> Period, <span class="kw1">class</span> Rep2 <span class="sy1">></span><br />
<p>duration<span class="sy1"><</span><span class="kw1">typename</span> <a href="../../types/common_type.html"><span class="kw547">std::<span class="me2">common_type</span></span></a><span class="sy1"><</span>Rep1,Rep2<span class="sy1">></span><span class="sy4">::</span><span class="me2">type</span>, Period<span class="sy1">></span><br />
    <span class="kw4">constexpr</span> operator<span class="sy2">%</span><span class="br0">(</span> <span class="kw4">const</span> duration<span class="sy1"><</span>Rep1, Period<span class="sy1">></span><span class="sy3">&</span> d,<br />
</p>
                         <span class="kw4">const</span> Rep2<span class="sy3">&</span> s <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (7) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl">
<td> <div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> Rep1, <span class="kw1">class</span> Period1, <span class="kw1">class</span> Rep2, <span class="kw1">class</span> Period2 <span class="sy1">></span><br />
<p><span class="kw1">typename</span> <a href="../../types/common_type.html"><span class="kw547">std::<span class="me2">common_type</span></span></a><span class="sy1"><</span>duration<span class="sy1"><</span>Rep1,Period1<span class="sy1">></span>, duration<span class="sy1"><</span>Rep2,Period2<span class="sy1">>></span><span class="sy4">::</span><span class="me2">type</span><br />
<span class="kw4">constexpr</span> operator<span class="sy2">%</span><span class="br0">(</span> <span class="kw4">const</span> duration<span class="sy1"><</span>Rep1,Period1<span class="sy1">></span><span class="sy3">&</span> lhs,<br />
</p>
                     <span class="kw4">const</span> duration<span class="sy1"><</span>Rep2,Period2<span class="sy1">></span><span class="sy3">&</span> rhs <span class="br0">)</span><span class="sy4">;</span></span></div></td>
<td> (8) </td>
<td class="t-dcl-nopad"> </td>
</tr>
<tr class="t-dcl-sep"><td></td><td></td><td></td></tr>
</tbody></table>
<p>Performs basic arithmetic operations between two durations or between a duration and a tick count.
</p>
<div class="t-li1"><span class="t-li">1)</span> Converts the two durations to their common type and creates a duration whose tick count is the sum of the tick counts after conversion.</div>
<div class="t-li1"><span class="t-li">2)</span> Converts the two durations to their common type and creates a duration whose tick count is the <code>rhs</code> number of ticks subtracted from the <code>lhs</code> number of ticks after conversion.</div>
<div class="t-li1"><span class="t-li">3-4)</span> Converts the duration <code>d</code> to one whose <code>rep</code> is the common type between <code>Rep1</code> and <code>Rep2</code>, and multiples the number of ticks after conversion by <code>s</code>.</div>
<div class="t-li1"><span class="t-li">5)</span> Converts the duration <code>d</code> to one whose <code>rep</code> is the common type between <code>Rep1</code> and <code>Rep2</code>, and divides the number of ticks after conversion by <code>s</code></div>
<div class="t-li1"><span class="t-li">6)</span> Converts the two durations to their common type and divides the tick count of <code>lhs</code> after conversion by the tick count of <code>rhs</code> after conversion. Note that the return value of this operator is not a duration.</div>
<div class="t-li1"><span class="t-li">7)</span> Converts the duration <code>d</code> to one whose <code>rep</code> is the common type between <code>Rep1</code> and <code>Rep2</code>, and creates a duration whose tick count is the remainder of the division of the tick count, after conversion, by <code>s</code>.</div>
<div class="t-li1"><span class="t-li">8)</span> Converts the two durations to their common type and creates a duration whose tick count is the remainder of the tick counts after conversion.</div>
<table class="metadata plainlinks ambox mbox-small-left ambox-notice" style=""><tr><td class="mbox-empty-cell"></td><td class="mbox-text" style="">This section is incomplete<br />Reason: list the "does not participate in overload resolution unless" constraints </td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&action=edit&section=1" title="Edit section: Parameters">edit</a>]</span> <span class="mw-headline" id="Parameters">Parameters</span></h3>
<table class="t-par-begin">
<tr class="t-par">
<td> lhs
</td>
<td> -
</td>
<td> duration on the left-hand side of the operator
</td></tr>
<tr class="t-par">
<td> rhs
</td>
<td> -
</td>
<td> duration on the right-hand side of the operator
</td></tr>
<tr class="t-par">
<td> d
</td>
<td> -
</td>
<td> the duration argument for mixed-argument operators
</td></tr>
<tr class="t-par">
<td> s
</td>
<td> -
</td>
<td> tick count argument for mixed-argument operators
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&action=edit&section=2" title="Edit section: Return value">edit</a>]</span> <span class="mw-headline" id="Return_value">Return value</span></h3>
<p>Assuming that <span class="t-c"><span class="mw-geshi cpp source-cpp">CD</span></span> is the function return type and <span class="t-c"><span class="mw-geshi cpp source-cpp">CR<span class="sy1"><</span>A, B<span class="sy1">></span> <span class="sy1">=</span> <a href="../../types/common_type.html"><span class="kw547">std::<span class="me2">common_type</span></span></a><span class="sy1"><</span>A, B<span class="sy1">></span><span class="sy4">::</span><span class="me2">type</span></span></span>, then:
</p>
<div class="t-li1"><span class="t-li">1)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">CD<span class="br0">(</span>CD<span class="br0">(</span>lhs<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy2">+</span> CD<span class="br0">(</span>rhs<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span></span></span></div>
<div class="t-li1"><span class="t-li">2)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">CD<span class="br0">(</span>CD<span class="br0">(</span>lhs<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy2">-</span> CD<span class="br0">(</span>rhs<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span></span></span></div>
<div class="t-li1"><span class="t-li">3-4)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">CD<span class="br0">(</span>CD<span class="br0">(</span>d<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy2">*</span> s<span class="br0">)</span></span></span> </div>
<div class="t-li1"><span class="t-li">5)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">CD<span class="br0">(</span>CD<span class="br0">(</span>d<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy2">/</span> s<span class="br0">)</span>.</span></span></div>
<div class="t-li1"><span class="t-li">6)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">CD<span class="br0">(</span>lhs<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy2">/</span> CD<span class="br0">(</span>rhs<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span></span></span> (the return type of this operator is not a duration)</div>
<div class="t-li1"><span class="t-li">7)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">CD<span class="br0">(</span>CD<span class="br0">(</span>d<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy2">%</span> s<span class="br0">)</span></span></span></div>
<div class="t-li1"><span class="t-li">8)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">CD<span class="br0">(</span>CD<span class="br0">(</span>lhs<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy2">%</span> CD<span class="br0">(</span>rhs<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span></span></span></div>
<p><br />
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&action=edit&section=3" title="Edit section: Example">edit</a>]</span> <span class="mw-headline" id="Example">Example</span></h3>
<div class="t-example"><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">Run this code</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="co2">#include <chrono></span>
<span class="co2">#include <iostream></span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="co1">// simple arithmetic</span>
<a href="../duration.html"><span class="kw875">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">seconds</span></span></a> s <span class="sy1">=</span> <a href="../duration.html"><span class="kw877">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">hours</span></span></a><span class="br0">(</span><span class="nu0">1</span><span class="br0">)</span>
<span class="sy2">+</span> <span class="nu0">2</span><span class="sy2">*</span><a href="../duration.html"><span class="kw876">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">minutes</span></span></a><span class="br0">(</span><span class="nu0">10</span><span class="br0">)</span>
<span class="sy2">+</span> <a href="../duration.html"><span class="kw875">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">seconds</span></span></a><span class="br0">(</span><span class="nu0">70</span><span class="br0">)</span><span class="sy2">/</span><span class="nu0">10</span><span class="sy4">;</span>
 
<a href="../../io/cout.html"><span class="kw1481">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"1 hour + 2*10 min + 70/10 sec = "</span> <span class="sy1"><<</span> s.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1"><<</span> <span class="st0">" seconds<span class="es1">\n</span>"</span><span class="sy4">;</span>
 
<span class="co1">// difference between dividing a duration by a number</span>
<span class="co1">// and dividing a duration by another duration</span>
<a href="../../io/cout.html"><span class="kw1481">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"Dividing that by 2 minutes gives "</span>
<span class="sy1"><<</span> s <span class="sy2">/</span> <a href="../duration.html"><span class="kw876">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">minutes</span></span></a><span class="br0">(</span><span class="nu0">2</span><span class="br0">)</span> <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
<a href="../../io/cout.html"><span class="kw1481">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="st0">"Dividing that by 2 gives "</span>
<span class="sy1"><<</span> <span class="br0">(</span>s <span class="sy2">/</span> <span class="nu0">2</span><span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1"><<</span> <span class="st0">" seconds<span class="es1">\n</span>"</span><span class="sy4">;</span>
 
<span class="co1">// the remainder operator is useful in determining where in a time</span>
<span class="co1">// frame is this particular duration, e.g. to break it down into hours,</span>
<span class="co1">// minutes, and seconds:</span>
<a href="../../io/cout.html"><span class="kw1481">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> s.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1"><<</span> <span class="st0">" seconds is "</span>
<span class="sy1"><<</span> <a href="duration_cast.html"><span class="kw878">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">duration_cast</span></span></a><span class="sy1"><</span><a href="../duration.html"><span class="kw877">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">hours</span></span></a><span class="sy1">></span><span class="br0">(</span>
s
<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1"><<</span> <span class="st0">" hours, "</span>
<span class="sy1"><<</span> <a href="duration_cast.html"><span class="kw878">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">duration_cast</span></span></a><span class="sy1"><</span><a href="../duration.html"><span class="kw876">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">minutes</span></span></a><span class="sy1">></span><span class="br0">(</span>
s <span class="sy2">%</span> <a href="../duration.html"><span class="kw877">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">hours</span></span></a><span class="br0">(</span><span class="nu0">1</span><span class="br0">)</span>
<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1"><<</span> <span class="st0">" minutes, "</span>
<span class="sy1"><<</span> <a href="duration_cast.html"><span class="kw878">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">duration_cast</span></span></a><span class="sy1"><</span><a href="../duration.html"><span class="kw875">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">seconds</span></span></a><span class="sy1">></span><span class="br0">(</span>
s <span class="sy2">%</span> <a href="../duration.html"><span class="kw876">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">minutes</span></span></a><span class="br0">(</span><span class="nu0">1</span><span class="br0">)</span>
<span class="br0">)</span>.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1"><<</span> <span class="st0">" seconds<span class="es1">\n</span>"</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>Output:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">1 hour + 2*10 min + 70/10 sec = 4807 seconds
Dividing that by 2 minutes gives 40
Dividing that by 2 gives 2403 seconds
4807 seconds is 1 hours, 20 minutes, 7 seconds</pre></div></div>
</div>
<!--
NewPP limit report
Preprocessor visited node count: 5400/1000000
Preprocessor generated node count: 10001/1000000
Post‐expand include size: 129877/2097152 bytes
Template argument size: 32443/2097152 bytes
Highest expansion depth: 17/40
Expensive parser function count: 0/100
-->
<!-- Saved in parser cache with key mwiki1-mwiki_en_:pcache:idhash:9399-0!*!0!!*!*!* and timestamp 20151028072030 -->
</div> <!-- /bodycontent -->
<!-- printfooter -->
<div class="printfooter">
Retrieved from "<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&oldid=81529">http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&oldid=81529</a>" </div>
<!-- /printfooter -->
<!-- catlinks -->
<div id='catlinks' class='catlinks'><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="http://en.cppreference.com/w/Special:Categories" title="Special:Categories">Category</a>: <ul><li><a href="http://en.cppreference.com/w/Category:Todo_with_reason" title="Category:Todo with reason">Todo with reason</a></li></ul></div></div> <!-- /catlinks -->
<div class="visualClear"></div>
<!-- debughtml -->
<!-- /debughtml -->
</div>
<!-- /bodyContent -->
</div>
</div>
<!-- /content -->
<!-- footer -->
<div id="cpp-footer-base" class="noprint">
<div id="footer">
<div id="cpp-navigation">
<h5>Navigation</h5>
<ul>
<li id="n-Support-us"><a href="http://www.cppreference.com/support" rel="nofollow">Support us</a></li><li id="n-recentchanges"><a href="http://en.cppreference.com/w/Special:RecentChanges" title="A list of recent changes in the wiki [r]" accesskey="r">Recent changes</a></li><li id="n-FAQ"><a href="http://en.cppreference.com/w/Cppreference:FAQ">FAQ</a></li><li id="n-Offline-version"><a href="http://en.cppreference.com/w/Cppreference:Archives">Offline version</a></li> </ul>
</div>
<div id="cpp-toolbox">
<h5><span>Toolbox</span><a href="operator_arith4.html#"></a></h5>
<ul>
<li id="t-whatlinkshere"><a href="http://en.cppreference.com/w/Special:WhatLinksHere/cpp/chrono/duration/operator_arith4" title="A list of all wiki pages that link here [j]" accesskey="j">What links here</a></li><li id="t-recentchangeslinked"><a href="http://en.cppreference.com/w/Special:RecentChangesLinked/cpp/chrono/duration/operator_arith4" title="Recent changes in pages linked from this page [k]" accesskey="k">Related changes</a></li><li id="t-upload"><a href="http://upload.cppreference.com/w/Special:Upload" title="Upload files [u]" accesskey="u">Upload file</a></li><li id="t-specialpages"><a href="http://en.cppreference.com/w/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q">Special pages</a></li><li id="t-print"><a href="http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&printable=yes" rel="alternate" title="Printable version of this page [p]" accesskey="p">Printable version</a></li><li id="t-permalink"><a href="http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&oldid=81529" title="Permanent link to this revision of the page">Permanent link</a></li><li id="t-info"><a href="http://en.cppreference.com/mwiki/index.php?title=cpp/chrono/duration/operator_arith4&action=info">Page information</a></li> </ul>
</div>
<div id="cpp-languages">
<div><ul><li>In other languages</li></ul></div>
<div><ul>
<li class="interwiki-de"><a href="http://de.cppreference.com/w/cpp/chrono/duration/operator_arith4" title="cpp/chrono/duration/operator arith4" lang="de" hreflang="de">Deutsch</a></li><li class="interwiki-es"><a href="http://es.cppreference.com/w/cpp/chrono/duration/operator_arith4" title="cpp/chrono/duration/operator arith4" lang="es" hreflang="es">Español</a></li><li class="interwiki-fr"><a href="http://fr.cppreference.com/w/cpp/chrono/duration/operator_arith4" title="cpp/chrono/duration/operator arith4" lang="fr" hreflang="fr">Français</a></li><li class="interwiki-it"><a href="http://it.cppreference.com/w/cpp/chrono/duration/operator_arith4" title="cpp/chrono/duration/operator arith4" lang="it" hreflang="it">Italiano</a></li><li class="interwiki-ja"><a href="http://ja.cppreference.com/w/cpp/chrono/duration/operator_arith4" title="cpp/chrono/duration/operator arith4" lang="ja" hreflang="ja">日本語</a></li><li class="interwiki-pt"><a href="http://pt.cppreference.com/w/cpp/chrono/duration/operator_arith4" title="cpp/chrono/duration/operator arith4" lang="pt" hreflang="pt">Português</a></li><li class="interwiki-ru"><a href="http://ru.cppreference.com/w/cpp/chrono/duration/operator_arith4" title="cpp/chrono/duration/operator arith4" lang="ru" hreflang="ru">Русский</a></li><li class="interwiki-zh"><a href="http://zh.cppreference.com/w/cpp/chrono/duration/operator_arith4" title="cpp/chrono/duration/operator arith4" lang="zh" hreflang="zh">中文</a></li> </ul></div>
</div>
<ul id="footer-info">
<li id="footer-info-lastmod"> This page was last modified on 27 October 2015, at 09:26.</li>
<li id="footer-info-viewcount">This page has been accessed 8,127 times.</li>
</ul>
<ul id="footer-places">
<li id="footer-places-privacy"><a href="http://en.cppreference.com/w/Cppreference:Privacy_policy" title="Cppreference:Privacy policy">Privacy policy</a></li>
<li id="footer-places-about"><a href="http://en.cppreference.com/w/Cppreference:About" title="Cppreference:About">About cppreference.com</a></li>
<li id="footer-places-disclaimer"><a href="http://en.cppreference.com/w/Cppreference:General_disclaimer" title="Cppreference:General disclaimer">Disclaimers</a></li>
</ul>
<ul id="footer-icons" class="noprint">
<li id="footer-poweredbyico">
<a href="http://www.mediawiki.org/"><img src="../../../../mwiki/skins/common/images/poweredby_mediawiki_88x31.png" alt="Powered by MediaWiki" width="88" height="31" /></a> <a href="http://qbnz.com/highlighter/"><img src="../../../../../upload.cppreference.com/mwiki/images/2/2b/powered_by_geshi_88x31.png" alt="Powered by GeSHi" height="31" width="88" /></a> <a href="http://www.tigertech.net/referral/cppreference.com"><img src="../../../../../upload.cppreference.com/mwiki/images/9/94/powered_by_tigertech_88x31.png" alt="Hosted by Tiger Technologies" height="31" width="88" /></a> </li>
</ul>
<div style="clear:both">
</div>
</div>
</div>
<!-- /footer -->
<script>if(window.mw){
mw.loader.state({"site":"loading","user":"missing","user.groups":"ready"});
}</script>
<script src="../../../../mwiki/load.php%3Fdebug=false&lang=en&modules=skins.cppreference2&only=scripts&skin=cppreference2&*"></script>
<script>if(window.mw){
mw.loader.load(["mediawiki.action.view.postEdit","mediawiki.user","mediawiki.page.ready","mediawiki.searchSuggest","mediawiki.hidpi","ext.gadget.ColiruCompiler"], null, true);
}</script>
<script src="../../../../mwiki/load.php%3Fdebug=false&lang=en&modules=site&only=scripts&skin=cppreference2&*"></script>
<script type="text/javascript">
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-2828341-1']);
_gaq.push(['_setDomainName', 'cppreference.com']);
_gaq.push(['_trackPageview']);
</script><!-- Served in 2.899 secs. -->
</body>
<!-- Cached 20151028072030 -->
</html>
|
