ansistring.html

Vxworks API操作系统和驱动程序设计API。压缩的HTML文件

    const char * s1,          /* string to compare */
    const char * s2           /* string to compare <i>s1</i> to */
    )
</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine compares string <i>s1</i> to string <i>s2</i> lexicographically.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>string.h</b>
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
An integer greater than, equal to, or less than 0,
according to whether <i>s1</i> is lexicographically
greater than, equal to, or less than <i>s2</i>, respectively.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ansiString.html#top">ansiString</a></b>

<hr>
<a name="strcoll"></a>
<p align=right>
<a href="rtnIndex.htm"><i>OS Libraries :  Routines</i></a></p>

</blockquote><h1>strcoll(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong>strcoll(&nbsp;)</strong> - compare two strings as appropriate to <b>LC_COLLATE</b>  (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>int strcoll
    (
    const char * s1,          /* string 1 */
    const char * s2           /* string 2 */
    )
</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine compares two strings, both interpreted as appropriate to the
<b>LC_COLLATE</b> category of the current locale.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>string.h</b>
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
An integer greater than, equal to, or less than zero, according to whether
string <i>s1</i> is greater than, equal to, or less than string <i>s2</i> when both
are interpreted as appropriate to the current locale.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ansiString.html#top">ansiString</a></b>

<hr>
<a name="strcpy"></a>
<p align=right>
<a href="rtnIndex.htm"><i>OS Libraries :  Routines</i></a></p>

</blockquote><h1>strcpy(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong>strcpy(&nbsp;)</strong> - copy one string to another (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>char * strcpy
    (
    char *       s1,          /* string to copy to */
    const char * s2           /* string to copy from */
    )
</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine copies string <i>s2</i> (including EOS) to string <i>s1</i>.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>string.h</b>
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
A pointer to <i>s1</i>.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ansiString.html#top">ansiString</a></b>

<hr>
<a name="strcspn"></a>
<p align=right>
<a href="rtnIndex.htm"><i>OS Libraries :  Routines</i></a></p>

</blockquote><h1>strcspn(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong>strcspn(&nbsp;)</strong> - return the string length up to the first character from a given set (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>size_t strcspn
    (
    const char * s1,          /* string to search */
    const char * s2           /* set of characters to look for in <i>s1</i> */
    )
</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine computes the length of the maximum initial segment of string
<i>s1</i> that consists entirely of characters not included in string <i>s2</i>.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>string.h</b>
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
The length of the string segment.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ansiString.html#top">ansiString</a></b>, <b><a href="./ansiString.html#strpbrk">strpbrk</a>(&nbsp;)</b>, <b><a href="./ansiString.html#strspn">strspn</a>(&nbsp;)</b>

<hr>
<a name="strerror_r"></a>
<p align=right>
<a href="rtnIndex.htm"><i>OS Libraries :  Routines</i></a></p>

</blockquote><h1>strerror_r(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong>strerror_r(&nbsp;)</strong> - map an error number to an error string (POSIX)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>STATUS strerror_r
    (
    int    errcode,           /* error code */
    char * buffer             /* string buffer */
    )
</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine maps the error number in <i>errcode</i> to an error message string.
It stores the error string in <i>buffer</i>.
<p>
This routine is the POSIX reentrant version of <b><a href="./ansiString.html#strerror">strerror</a>(&nbsp;)</b>.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>string.h</b>
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
OK or ERROR.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ansiString.html#top">ansiString</a></b>, <b><a href="./ansiString.html#strerror">strerror</a>(&nbsp;)</b>

<hr>
<a name="strerror"></a>
<p align=right>
<a href="rtnIndex.htm"><i>OS Libraries :  Routines</i></a></p>

</blockquote><h1>strerror(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong>strerror(&nbsp;)</strong> - map an error number to an error string (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>char * strerror
    (
    int errcode               /* error code */
    )
</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine maps the error number in <i>errcode</i> to an error message string.
It returns a pointer to a static buffer that holds the error string.
<p>
This routine is not reentrant.  For a reentrant version, see <b><a href="./ansiString.html#strerror_r">strerror_r</a>(&nbsp;)</b>.
<p>
</blockquote><h4>INCLUDE</h4><blockquote><p>
<b>string.h</b>
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
A pointer to the buffer that holds the error string.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ansiString.html#top">ansiString</a></b>, <b><a href="./ansiString.html#strerror_r">strerror_r</a>(&nbsp;)</b>

<hr>
<a name="strlen"></a>
<p align=right>
<a href="rtnIndex.htm"><i>OS Libraries :  Routines</i></a></p>

</blockquote><h1>strlen(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong>strlen(&nbsp;)</strong> - determine the length of a string (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>size_t strlen
    (
    const char * s            /* string */
    )
</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns the number of characters in <i>s</i>, not including EOS.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>string.h</b>
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The number of non-null characters in the string.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ansiString.html#top">ansiString</a></b>

<hr>
<a name="strncat"></a>
<p align=right>
<a href="rtnIndex.htm"><i>OS Libraries :  Routines</i></a></p>

</blockquote><h1>strncat(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong>strncat(&nbsp;)</strong> - concatenate characters from one string to another (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>char * strncat
    (
    char *       dst,         /* string to append to */
    const char * src,         /* string to append */
    size_t       n            /* max no. of characters to append */
    )
</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine appends up to <i>n</i> characters from string <i>src</i> to the
end of string <i>dst</i>.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>string.h</b>
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
A pointer to the null-terminated string <i>s1</i>.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ansiString.html#top">ansiString</a></b>

<hr>
<a name="strncmp"></a>
<p align=right>
<a href="rtnIndex.htm"><i>OS Libraries :  Routines</i></a></p>

</blockquote><h1>strncmp(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong>strncmp(&nbsp;)</strong> - compare the first <i>n</i> characters of two strings (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>int strncmp
    (
    const char * s1,          /* string to compare */
    const char * s2,          /* string to compare <i>s1</i> to */
    size_t       n            /* max no. of characters to compare */
    )
</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine compares up to <i>n</i> characters of string <i>s1</i> to string <i>s2</i>
lexicographically.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>string.h</b>
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
An integer greater than, equal to, or less than 0, according to whether
<i>s1</i> is lexicographically greater than, equal to, or less than <i>s2</i>,
respectively.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ansiString.html#top">ansiString</a></b>

<hr>
<a name="strncpy"></a>
<p align=right>
<a href="rtnIndex.htm"><i>OS Libraries :  Routines</i></a></p>

</blockquote><h1>strncpy(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong>strncpy(&nbsp;)</strong> - copy characters from one string to another (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>char *strncpy
    (
    char *       s1,          /* string to copy to */
    const char * s2,          /* string to copy from */
    size_t       n            /* max no. of characters to copy */
    )
</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine copies <i>n</i> characters from string <i>s2</i> to string <i>s1</i>.
If <i>n</i> is greater than the length of <i>s2</i>, nulls are added to <i>s1</i>.
If <i>n</i> is less than or equal to the length of <i>s2</i>, the target
string will not be null-terminated.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>string.h</b>
<p>