<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ --> <head> <title>atoll (The Red Hat newlib C Library)</title> <meta name="description" content="atoll (The Red Hat newlib C Library)"> <meta name="keywords" content="atoll (The Red Hat newlib C Library)"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="makeinfo"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <link href="index.html#Top" rel="start" title="Top"> <link href="Document-Index.html#Document-Index" rel="index" title="Document Index"> <link href="Document-Index.html#SEC_Contents" rel="contents" title="Table of Contents"> <link href="Stdlib.html#Stdlib" rel="up" title="Stdlib"> <link href="bsearch.html#bsearch" rel="next" title="bsearch"> <link href="atoi.html#atoi" rel="prev" title="atoi"> <style type="text/css"> <!-- a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} blockquote.smallquotation {font-size: smaller} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} div.lisp {margin-left: 3.2em} div.smalldisplay {margin-left: 3.2em} div.smallexample {margin-left: 3.2em} div.smalllisp {margin-left: 3.2em} kbd {font-style: oblique} pre.display {font-family: inherit} pre.format {font-family: inherit} pre.menu-comment {font-family: serif} pre.menu-preformatted {font-family: serif} pre.smalldisplay {font-family: inherit; font-size: smaller} pre.smallexample {font-size: smaller} pre.smallformat {font-family: inherit; font-size: smaller} pre.smalllisp {font-size: smaller} span.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} ul.no-bullet {list-style: none} --> </style> </head> <body lang="en"> <a name="atoll"></a> <div class="header"> <p> Next: <a href="bsearch.html#bsearch" accesskey="n" rel="next">bsearch</a>, Previous: <a href="atoi.html#atoi" accesskey="p" rel="prev">atoi</a>, Up: <a href="Stdlib.html#Stdlib" accesskey="u" rel="up">Stdlib</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p> </div> <hr> <a name="atoll_002d_002d_002dconvert-a-string-to-a-long-long-integer"></a> <h3 class="section">2.9 <code>atoll</code>—convert a string to a long long integer</h3> <a name="index-atoll"></a> <a name="index-_005fatoll_005fr"></a> <p><strong>Synopsis</strong> </p><div class="example"> <pre class="example">#include <stdlib.h> long long atoll(const char *<var>str</var>); long long _atoll_r(struct _reent *<var>ptr</var>, const char *<var>str</var>); </pre></div> <p><strong>Description</strong><br> The function <code>atoll</code> converts the initial portion of the string pointed to by <code>*<var>str</var></code> to a type <code>long long</code>. A call to atoll(str) in this implementation is equivalent to strtoll(str, (char **)NULL, 10) including behavior on error. </p> <p>The alternate function <code>_atoll_r</code> is a reentrant version. The extra argument <var>reent</var> is a pointer to a reentrancy structure. </p> <br> <p><strong>Returns</strong><br> The converted value. </p> <br> <p><strong>Portability</strong><br> <code>atoll</code> is ISO 9899 (C99) and POSIX 1003.1-2001 compatable. </p> <p>No supporting OS subroutines are required. </p> <br> </body> </html>