summaryrefslogtreecommitdiff
path: root/devdocs/c/string%2Fbyte%2Fatoi.html
diff options
context:
space:
mode:
authorCraig Jennings <c@cjennings.net>2025-08-14 22:58:58 -0500
committerCraig Jennings <c@cjennings.net>2025-08-14 22:58:58 -0500
commit82ba818ff456bcd6d56a06226e3f27e98fbb55c3 (patch)
tree158cfc17b2f644a10f063cb546752cfaae12c97f /devdocs/c/string%2Fbyte%2Fatoi.html
parent9278ddd4ea1a8b1a4c1edaa8894516e3f48d245b (diff)
downloaddotemacs-82ba818ff456bcd6d56a06226e3f27e98fbb55c3.tar.gz
dotemacs-82ba818ff456bcd6d56a06226e3f27e98fbb55c3.zip
removing all downloaded devdocs files
Diffstat (limited to 'devdocs/c/string%2Fbyte%2Fatoi.html')
-rw-r--r--devdocs/c/string%2Fbyte%2Fatoi.html60
1 files changed, 0 insertions, 60 deletions
diff --git a/devdocs/c/string%2Fbyte%2Fatoi.html b/devdocs/c/string%2Fbyte%2Fatoi.html
deleted file mode 100644
index b4a114d3..00000000
--- a/devdocs/c/string%2Fbyte%2Fatoi.html
+++ /dev/null
@@ -1,60 +0,0 @@
- <h1 id="firstHeading" class="firstHeading">atoi, atol, atoll</h1> <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code>&lt;stdlib.h&gt;</code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl"> <td class="t-dcl-nopad"> <pre data-language="c">int atoi( const char *str );</pre>
-</td> <td class="t-dcl-nopad"> </td> <td class="t-dcl-nopad"> </td> </tr> <tr class="t-dcl"> <td class="t-dcl-nopad"> <pre data-language="c">long atol( const char *str );</pre>
-</td> <td class="t-dcl-nopad"> </td> <td class="t-dcl-nopad"> </td> </tr> <tr class="t-dcl t-since-c99"> <td> <pre data-language="c">long long atoll( const char *str );</pre>
-</td> <td class="t-dcl-nopad"> </td> <td> <span class="t-mark-rev t-since-c99">(since C99)</span> </td> </tr> </table> <p>Interprets an integer value in a byte string pointed to by <code>str</code>. The implied radix is always 10.</p>
-<p>Discards any whitespace characters until the first non-whitespace character is found, then takes as many characters as possible to form a valid integer number representation and converts them to an integer value. The valid integer value consists of the following parts:</p>
-<ul>
-<li> <span class="t-mark">(optional)</span> plus or minus sign </li>
-<li> numeric digits </li>
-</ul> <p>If the value of the result cannot be represented, i.e. the converted value falls out of range of the corresponding return type, the behavior is undefined.</p>
-<h3 id="Parameters"> Parameters</h3> <table class="t-par-begin"> <tr class="t-par"> <td> str </td> <td> - </td> <td> pointer to the null-terminated byte string to be interpreted </td>
-</tr>
-</table> <h3 id="Return_value"> Return value</h3> <p>Integer value corresponding to the contents of <code>str</code> on success.</p>
-<p>If no conversion can be performed, <code>​0​</code> is returned.</p>
-<h3 id="Notes"> Notes</h3> <p>The name stands for "ASCII to integer".</p>
-<h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include &lt;stdio.h&gt;
-#include &lt;stdlib.h&gt;
-
-int main(void)
-{
- printf("%i\n", atoi(" -123junk"));
- printf("%i\n", atoi(" +321dust"));
- printf("%i\n", atoi("0"));
- printf("%i\n", atoi("0042")); // treated as a decimal number with leading zeros
- printf("%i\n", atoi("0x2A")); // only leading zero is converted discarding "x2A"
- printf("%i\n", atoi("junk")); // no conversion can be performed
- printf("%i\n", atoi("2147483648")); // UB: out of range of int
-}</pre></div> <p>Possible output:</p>
-<div class="text source-text"><pre data-language="c">-123
-321
-0
-42
-0
-0
--2147483648</pre></div> </div> <h3 id="References"> References</h3> <ul>
-<li> C17 standard (ISO/IEC 9899:2018): </li>
-<ul><li> 7.22.1.2 The atoi, atol, and atoll functions (p: 249) </li></ul>
-<li> C11 standard (ISO/IEC 9899:2011): </li>
-<ul><li> 7.22.1.2 The atoi, atol, and atoll functions (p: 341) </li></ul>
-<li> C99 standard (ISO/IEC 9899:1999): </li>
-<ul><li> 7.20.1.2 The atoi, atol, and atoll functions (p: 307) </li></ul>
-<li> C89/C90 standard (ISO/IEC 9899:1990): </li>
-<ul>
-<li> 4.10.1.2 The atoi function </li>
-<li> 4.10.1.3 The atol function </li>
-</ul>
-</ul> <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="strtol" title="c/string/byte/strtol"> <span class="t-lines"><span>strtol</span><span>strtoll</span></span></a></div>
-<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> converts a byte string to an integer value <br> <span class="t-mark">(function)</span> </td>
-</tr> <tr class="t-dsc"> <td> <div><a href="strtoul" title="c/string/byte/strtoul"> <span class="t-lines"><span>strtoul</span><span> strtoull</span></span></a></div>
-<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> converts a byte string to an unsigned integer value <br> <span class="t-mark">(function)</span> </td>
-</tr> <tr class="t-dsc"> <td> <div><a href="../wide/wcstol" title="c/string/wide/wcstol"> <span class="t-lines"><span>wcstol</span><span>wcstoll</span></span></a></div>
-<div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> converts a wide string to an integer value <br> <span class="t-mark">(function)</span> </td>
-</tr> <tr class="t-dsc"> <td> <div><a href="../wide/wcstoul" title="c/string/wide/wcstoul"> <span class="t-lines"><span>wcstoul</span><span>wcstoull</span></span></a></div>
-<div><span class="t-lines"><span><span class="t-mark-rev t-since-c95">(C95)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> converts a wide string to an unsigned integer value <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/byte/atoi" title="cpp/string/byte/atoi">C++ documentation</a></span> for <code>atoi, atol, atoll</code> </td>
-</tr> </table> <div class="_attribution">
- <p class="_attribution-p">
- &copy; cppreference.com<br>Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.<br>
- <a href="https://en.cppreference.com/w/c/string/byte/atoi" class="_attribution-link">https://en.cppreference.com/w/c/string/byte/atoi</a>
- </p>
-</div>