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| author | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
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| committer | Craig Jennings <c@cjennings.net> | 2024-04-07 13:41:34 -0500 |
| commit | 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 (patch) | |
| tree | f1190704f78f04a2b0b4c977d20fe96a828377f1 /devdocs/c/string%2Fmultibyte%2Fchar32_t.html | |
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diff --git a/devdocs/c/string%2Fmultibyte%2Fchar32_t.html b/devdocs/c/string%2Fmultibyte%2Fchar32_t.html new file mode 100644 index 00000000..a6895bb4 --- /dev/null +++ b/devdocs/c/string%2Fmultibyte%2Fchar32_t.html @@ -0,0 +1,35 @@ + <h1 id="firstHeading" class="firstHeading">char32_t</h1> <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code><uchar.h></code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl t-since-c11"> <td> <pre data-language="c">typedef uint_least32_t char32_t;</pre> +</td> <td class="t-dcl-nopad"> </td> <td> <span class="t-mark-rev t-since-c11">(since C11)</span> </td> </tr> </table> <p><code>char32_t</code> is an unsigned integer type used for 32-bit wide characters and is the same type as <code><a href="http://en.cppreference.com/w/c/types/integer"><span class="kw130">uint_least32_t</span></a></code>.</p> +<h3 id="Notes"> Notes</h3> <p>On any given platform, by the definition of <code><a href="http://en.cppreference.com/w/c/types/integer"><span class="kw130">uint_least32_t</span></a></code>, the width of type <code>char32_t</code> can be greater than 32 bits, but the actual values stored in an object of type <code>char32_t</code> will always have a width of 32 bits.</p> +<h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include <stdio.h> +#include <uchar.h> + +int main(void) +{ + const char32_t wc[] = U"zß水🍌"; // or "z\u00df\u6c34\U0001f34c" + const size_t wc_sz = sizeof wc / sizeof *wc; + printf("%zu UTF-32 code units: [ ", wc_sz); + for (size_t n = 0; n < wc_sz; ++n) + printf("%#x ", wc[n]); + printf("]\n"); +}</pre></div> <p>Possible output:</p> +<div class="text source-text"><pre data-language="c">5 UTF-32 code units: [ 0x7a 0xdf 0x6c34 0x1f34c 0 ]</pre></div> </div> <h3 id="References"> References</h3> <ul> +<li> C17 standard (ISO/IEC 9899:2018): </li> +<ul> +<li> 7.28 Unicode utilities <uchar.h> (p: 292) </li> +<li> 7.20.1.2 Minimum-width integer types (p: 212-213) </li> +</ul> +<li> C11 standard (ISO/IEC 9899:2011): </li> +<ul> +<li> 7.28 Unicode utilities <uchar.h> (p: 398) </li> +<li> 7.20.1.2 Minimum-width integer types (p: 290) </li> +</ul> +<li> C99 standard (ISO/IEC 9899:1999): </li> +<ul><li> 7.18.1.2 Minimum-width integer types (p: 256) </li></ul> +</ul> <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td colspan="2"> <span><a href="https://en.cppreference.com/w/cpp/language/types" title="cpp/language/types">C++ documentation</a></span> for <span class=""><span>Fundamental types</span></span> </td> +</tr> </table> <div class="_attribution"> + <p class="_attribution-p"> + © cppreference.com<br>Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.<br> + <a href="https://en.cppreference.com/w/c/string/multibyte/char32_t" class="_attribution-link">https://en.cppreference.com/w/c/string/multibyte/char32_t</a> + </p> +</div> |