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<head><title>apply — Preconditioner application routine</title>
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<!--l. 153--><div class="crosslinks"><p class="noindent">[<a
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href="userhtmlsu90.html" >next</a>] [<a
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<h4 class="subsectionHead"><span class="titlemark">10.3 </span> <a
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id="x102-13800010.3"></a>apply — Preconditioner application routine</h4>
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<pre class="verbatim" id="verbatim-83">
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call prec%apply(x,y,desc_a,info,trans,work)
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call prec%apply(x,desc_a,info,trans)
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</pre>
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<!--l. 158--><p class="nopar" >
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<!--l. 160--><p class="indent" >
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<dl class="description"><dt class="description">
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<span
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class="cmbx-10">Type:</span> </dt><dd
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class="description">Synchronous.
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</dd><dt class="description">
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<span
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class="cmbx-10">On Entry</span> </dt><dd
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class="description">
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</dd><dt class="description">
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<span
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class="cmbx-10">prec</span> </dt><dd
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class="description">the preconditioner. Scope: <span
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class="cmbx-10">local </span><br
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class="newline" />Type: <span
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class="cmbx-10">required</span><br
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class="newline" />Intent: <span
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class="cmbx-10">in</span>.<br
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class="newline" />Specified as: a preconditioner data structure <a
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href="userhtmlsu8.html#precdata"><span
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class="cmtt-10">psb</span><span
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class="cmtt-10">_prec</span><span
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class="cmtt-10">_type</span></a>.
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</dd><dt class="description">
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<span
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class="cmbx-10">x</span> </dt><dd
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class="description">the source vector. Scope: <span
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class="cmbx-10">local </span><br
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class="newline" />Type: <span
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class="cmbx-10">required</span><br
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class="newline" />Intent: <span
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class="cmbx-10">inout</span>.<br
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class="newline" />Specified as: a rank one array or an object of type <a
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href="userhtmlsu7.html#vdata"><span
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class="cmtt-10">psb</span><span
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class="cmtt-10">_T</span><span
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class="cmtt-10">_vect</span><span
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class="cmtt-10">_type</span></a>.
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</dd><dt class="description">
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<span
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class="cmbx-10">desc</span><span
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class="cmbx-10">_a</span> </dt><dd
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class="description">the problem communication descriptor. Scope: <span
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class="cmbx-10">local </span><br
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class="newline" />Type: <span
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class="cmbx-10">required</span><br
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class="newline" />Intent: <span
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class="cmbx-10">in</span>.<br
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class="newline" />Specified as: a communication data structure <a
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href="userhtmlsu5.html#descdata"><span
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class="cmtt-10">psb</span><span
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class="cmtt-10">_desc</span><span
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class="cmtt-10">_type</span></a>.
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</dd><dt class="description">
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<span
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class="cmbx-10">trans</span> </dt><dd
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class="description">Scope: <br
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class="newline" />Type: <span
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class="cmbx-10">optional</span><br
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class="newline" />Intent: <span
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class="cmbx-10">in</span>.<br
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class="newline" />Specified as: a character.
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</dd><dt class="description">
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<span
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class="cmbx-10">work</span> </dt><dd
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class="description">an optional work space Scope: <span
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class="cmbx-10">local </span><br
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class="newline" />Type: <span
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class="cmbx-10">optional</span><br
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class="newline" />Intent: <span
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class="cmbx-10">inout</span>.<br
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class="newline" />Specified as: a double precision array.</dd></dl>
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<!--l. 190--><p class="indent" >
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<dl class="description"><dt class="description">
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<span
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class="cmbx-10">On Return</span> </dt><dd
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class="description">
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</dd><dt class="description">
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<span
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class="cmbx-10">y</span> </dt><dd
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class="description">the destination vector. Scope: <span
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class="cmbx-10">local </span><br
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class="newline" />Type: <span
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class="cmbx-10">required</span><br
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class="newline" />Intent: <span
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class="cmbx-10">inout</span>.<br
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class="newline" />Specified as: a rank one array or an object of type <a
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href="userhtmlsu7.html#vdata"><span
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class="cmtt-10">psb</span><span
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class="cmtt-10">_T</span><span
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class="cmtt-10">_vect</span><span
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class="cmtt-10">_type</span></a>.
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</dd><dt class="description">
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<span
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class="cmbx-10">info</span> </dt><dd
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class="description">Error code.<br
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class="newline" />Scope: <span
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class="cmbx-10">local </span><br
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class="newline" />Type: <span
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class="cmbx-10">required </span><br
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class="newline" />Intent: <span
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class="cmbx-10">out</span>.<br
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class="newline" />An integer value; 0 means no error has been detected.</dd></dl>
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<!--l. 206--><div class="crosslinks"><p class="noindent">[<a
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href="userhtmlsu90.html" >next</a>] [<a
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href="userhtmlsu85.html" >prev</a>] [<a
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href="userhtmlsu85.html#tailuserhtmlsu85.html" >prev-tail</a>] [<a
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href="userhtmlsu86.html" >front</a>] [<a
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href="userhtmlsu86.html#userhtmlse11.html" >up</a>] </p></div>
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<!--l. 206--><p class="indent" > <a
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id="tailuserhtmlsu86.html"></a>
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</body></html>
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