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<pre> <span class="headline">strings.h(0P)             POSIX Pro‐
grammer’s  Manual             strings.h(0P)</span>  </pre> <h2><a
id="PROLOG" href="#PROLOG"></a>PROLOG  &nbsp; &nbsp; &nbsp;  &nb‐
sp;        <a        href="#top_of_page"><span        class="top‐
link">top</span></a></h2><pre>
       This manual page is part of the POSIX Programmer’s Manual.
The Linux
       implementation of this interface may differ (consult the
       corresponding  Linux  manual page for details of Linux be‐
havior), or
       the interface may not be  implemented  on  Linux.   </pre>
<h2><a id="NAME" href="#NAME"></a>NAME  &nbsp; &nbsp; &nbsp; &nb‐
sp;        <a        href="#top_of_page"><span        class="top‐
link">top</span></a></h2><pre>
       strings.h  — string operations </pre> <h2><a id="SYNOPSIS"
href="#SYNOPSIS"></a>SYNOPSIS  &nbsp;  &nbsp;  &nbsp;  &nbsp;  <a
href="#top_of_page"><span                             class="top‐
link">top</span></a></h2><pre>
       #include &lt;strings.h&gt; </pre> <h2><a  id="DESCRIPTION"
href="#DESCRIPTION"></a>DESCRIPTION   &nbsp; &nbsp; &nbsp; &nbsp;
<a             href="#top_of_page"><span              class="top‐
link">top</span></a></h2><pre>
       The  following shall be declared as functions and may also
be defined
       as macros. Function prototypes shall be provided  for  use
with ISO C
       standard compilers.

           <b>int    ffs(int);</b>
           <b>int    strcasecmp(const char *, const char *);</b>
           <b>int    strcasecmp_l(const char *, const char *, lo‐
cale_t);</b>
           <b>int    strncasecmp(const  char  *,  const  char  *,
size_t);</b>
           <b>int     strncasecmp_l(const  char  *, const char *,
size_t, locale_t);</b>

       The  <i>&lt;strings.h&gt;</i>  header  shall  define   the
<b>locale_t </b>type as described in
       <i>&lt;locale.h&gt;</i>.

       The   <i>&lt;strings.h&gt;</i>  header  shall  define  the
<b>size_t </b>type as described in
       <i>&lt;sys/types.h&gt;</i>.

       <i>The  following  sections  are  informative.</i>  </pre>
<h2><a  id="APPLICATION_USAGE"  href="#APPLICATION_USAGE"></a>AP‐
PLICATION    USAGE     &nbsp;    &nbsp;    &nbsp;    &nbsp;    <a
href="#top_of_page"><span                             class="top‐
link">top</span></a></h2><pre>
       None.    </pre>   <h2><a   id="RATIONALE"    href="#RATIO‐
NALE"></a>RATIONALE     &nbsp;    &nbsp;    &nbsp;    &nbsp;   <a
href="#top_of_page"><span                             class="top‐
link">top</span></a></h2><pre>
       None.   </pre>  <h2><a  id="FUTURE_DIRECTIONS"  href="#FU‐
TURE_DIRECTIONS"></a>FUTURE DIRECTIONS  &nbsp; &nbsp; &nbsp; &nb‐
sp;        <a        href="#top_of_page"><span        class="top‐
link">top</span></a></h2><pre>
       None.    </pre>   <h2><a   id="SEE_ALSO"    href="#SEE_AL‐
SO"></a>SEE    ALSO     &nbsp;    &nbsp;    &nbsp;    &nbsp;   <a
href="#top_of_page"><span                             class="top‐
link">top</span></a></h2><pre>
       <a   href="../man0/locale.h.0p.html">locale.h(0p)</a>,  <a
href="../man0/sys_types.h.0p.html">sys_types.h(0p)</a>

       The  System  Interfaces   volume   of   POSIX.1‐2008,   <a
href="../man3/ffs.3p.html">ffs(3p)</a>,   <a   href="../man3/str‐
casecmp.3p.html">strcasecmp(3p)</a> </pre> <h2><a  id="COPYRIGHT"
href="#COPYRIGHT"></a>COPYRIGHT   &nbsp;  &nbsp; &nbsp; &nbsp; <a
href="#top_of_page"><span                             class="top‐
link">top</span></a></h2><pre>
       Portions  of  this  text  are  reprinted and reproduced in
electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for  Informa‐
tion
       Technology ‐‐ Portable Operating System Interface (POSIX),
The Open
       Group Base Specifications Issue 7, Copyright (C)  2013  by
the
       Institute of Electrical and Electronics Engineers, Inc and
The Open
       Group.  (This is POSIX.1‐2008 with the 2013 Technical Cor‐
rigendum 1
       applied.)  In  the  event  of any discrepancy between this
version and
       the original IEEE and The Open Group Standard, the  origi‐
nal IEEE and
       The Open Group Standard is the referee document. The orig‐
inal
       Standard    can    be    obtained     online     at     <a
href="http://www.unix.org/online.html">http://www.unix.org/on‐
line.html</a> .

       Any typographical or formatting errors that appear in this
page are
       most  likely to have been introduced during the conversion
of the
       source files to man page format. To  report  such  errors,
see
       <a      href="https://www.kernel.org/doc/man‐pages/report‐
ing_bugs.html">https://www.kernel.org/doc/man‐pages/report‐
ing_bugs.html</a> .

<span  class="footline">IEEE/The  Open Group                 2013
strings.h(0P)</span> </pre>

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