ibm-information-center/dist/eclipse/plugins/i5OS.ic.apis_5.4.0.1/pase__strlen_spp.htm

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<title>_STRLEN_SPP()--Determine Character String Length for i5/OS PASE</title>
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<h2>_STRLEN_SPP()--Determine Character String Length for i5/OS PASE</h2>
<div class="box" style="width: 70%;">
<br>
&nbsp;&nbsp;Syntax
<pre>
#include &lt;as400_protos.h&gt;
size_t _STRLEN_SPP(const ILEpointer *<em>string</em>);
</pre>
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&nbsp;&nbsp;Default Public Authority: *USE<br>
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&nbsp;&nbsp;Library: Standard C Library (libc.a)<br>
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&nbsp;&nbsp;Threadsafe: Yes<br>
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<p><strong>Note:</strong> This function can only be used in an i5/OS PASE
program. See <a href="../rzalf/rzalfintro.htm">i5/OS PASE</a> for more
information about creating i5/OS PASE programs.</p>
<p>The <strong>_STRLEN_SPP()</strong> determines the length of a
null-terminated character string. It performs the same operation as the
<strong>strlen</strong> function, but uses a 16-byte tagged space pointer to
locate the string.</p>
<br>
<h3>Parameters</h3>
<dl>
<dt><strong>string</strong></dt>
<dd>(Input) Pointer to character string. string is the 16-byte aligned address
of a tagged space pointer to the character string.</dd>
</dl>
<br>
<h3>Authorities</h3>
<p><strong>_STRLEN_SPP</strong> requires no authority.</p>
<br>
<h3>Return Value</h3>
<p><strong>_STRLEN_SPP</strong> returns length of the character string.</p>
<br>
<h3>Error Conditions</h3>
<p>Any error is reported with an i5/OS exception message that the system
converts to an i5/OS PASE signal. See <a href="pase_signals.htm">i5/OS PASE
Signal Handling</a> for information about handling i5/OS exceptions.</p>
<br>
<h3>Usage Notes</h3>
<ol>
<li>_STRLEN_SPP can reference any memory addressable through a tagged space
pointer, which need not be in the i5/OS PASE address space.<br>
<br>
</li>
<li>_STRLEN_SPP is implemented with a kernel system call, so it generally runs
slower than strlen.</li>
</ol>
<br>
<h3>Related Information</h3>
<ul>
<li><a href="pase__cvtspp.htm">_CVTSPP()--Convert Space Pointer for i5/OS
PASE</a></li>
<li><a href="pase__setspp.htm">_SETSPP()--Set Space Pointer for i5/OS
PASE</a></li>
<li><a href="pase__setsppm.htm">_SETSPPM()--Set Multiple Space Pointers for i5/OS
PASE</a></li>
</ul>
<br>
<hr>
API introduced: V4R5
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