diff options
| author | Craig Jennings <c@cjennings.net> | 2025-08-14 22:58:58 -0500 |
|---|---|---|
| committer | Craig Jennings <c@cjennings.net> | 2025-08-14 22:58:58 -0500 |
| commit | 82ba818ff456bcd6d56a06226e3f27e98fbb55c3 (patch) | |
| tree | 158cfc17b2f644a10f063cb546752cfaae12c97f /devdocs/c/string%2Fmultibyte%2Fwctob.html | |
| parent | 9278ddd4ea1a8b1a4c1edaa8894516e3f48d245b (diff) | |
| download | dotemacs-82ba818ff456bcd6d56a06226e3f27e98fbb55c3.tar.gz dotemacs-82ba818ff456bcd6d56a06226e3f27e98fbb55c3.zip | |
removing all downloaded devdocs files
Diffstat (limited to 'devdocs/c/string%2Fmultibyte%2Fwctob.html')
| -rw-r--r-- | devdocs/c/string%2Fmultibyte%2Fwctob.html | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/devdocs/c/string%2Fmultibyte%2Fwctob.html b/devdocs/c/string%2Fmultibyte%2Fwctob.html deleted file mode 100644 index c942d365..00000000 --- a/devdocs/c/string%2Fmultibyte%2Fwctob.html +++ /dev/null @@ -1,54 +0,0 @@ - <h1 id="firstHeading" class="firstHeading">wctob</h1> <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code><wchar.h></code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl"> <td> <pre data-language="c">int wctob( wint_t c );</pre> -</td> <td class="t-dcl-nopad"> </td> <td> <span class="t-mark-rev t-since-c95">(since C95)</span> </td> </tr> </table> <p>Narrows a wide character <code>c</code> if its multibyte character equivalent in the initial shift state is a single byte.</p> -<p>This is typically possible for the characters from the ASCII character set, since most multibyte encodings (such as UTF-8) use single bytes to encode those characters.</p> -<h3 id="Parameters"> Parameters</h3> <table class="t-par-begin"> <tr class="t-par"> <td> c </td> <td> - </td> <td> wide character to narrow </td> -</tr> -</table> <h3 id="Return_value"> Return value</h3> <p><code><a href="../../io" title="c/io">EOF</a></code> if <code>c</code> does not represent a multibyte character with length <code>1</code> in initial shift state.</p> -<p>otherwise, the single-byte representation of <code>c</code> as <code>unsigned char</code> converted to <code>int</code></p> -<h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include <locale.h> -#include <wchar.h> -#include <stdio.h> -#include <assert.h> - -void try_narrowing(wchar_t c) -{ - int cn = wctob(c); - if(cn != EOF) - printf("%#x narrowed to %#x\n", c, cn); - else - printf("%#x could not be narrowed\n", c); -} - -int main(void) -{ - char* utf_locale_present = setlocale(LC_ALL, "th_TH.utf8"); - assert(utf_locale_present); - puts("In Thai UTF-8 locale:"); - try_narrowing(L'a'); - try_narrowing(L'๛'); - - char* tis_locale_present = setlocale(LC_ALL, "th_TH.tis620"); - assert(tis_locale_present); - puts("In Thai TIS-620 locale:"); - try_narrowing(L'a'); - try_narrowing(L'๛'); -}</pre></div> <p>Possible output:</p> -<div class="text source-text"><pre data-language="c">In Thai UTF-8 locale: -0x61 narrowed to 0x61 -0xe5b could not be narrowed -In Thai TIS-620 locale: -0x61 narrowed to 0x61 -0xe5b narrowed to 0xfb</pre></div> </div> <h3 id="References"> References</h3> <ul> -<li> C11 standard (ISO/IEC 9899:2011): </li> -<ul><li> 7.29.6.1.2 The wctob function (p: 441) </li></ul> -<li> C99 standard (ISO/IEC 9899:1999): </li> -<ul><li> 7.24.6.1.2 The wctob function (p: 387) </li></ul> -</ul> <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="btowc" title="c/string/multibyte/btowc"> <span class="t-lines"><span>btowc</span></span></a></div> -<div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span></span></div> </td> <td> widens a single-byte narrow character to wide character, if possible <br> <span class="t-mark">(function)</span> </td> -</tr> <tr class="t-dsc"> <td colspan="2"> <span><a href="https://en.cppreference.com/w/cpp/string/multibyte/wctob" title="cpp/string/multibyte/wctob">C++ documentation</a></span> for <code>wctob</code> </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/wctob" class="_attribution-link">https://en.cppreference.com/w/c/string/multibyte/wctob</a> - </p> -</div> |
