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<div id="version" align=right><b>slepc-3.7.3 2016-09-29</b></div>
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<H1>FNEvaluateFunctionMatVec</H1>
Computes the first column of the matrix f(A) for a given matrix A.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcfn.h"
PetscErrorCode FNEvaluateFunctionMatVec(FN fn,Mat A,Vec v)
</PRE>
Logically Collective on <A HREF="../FN/FN.html#FN">FN</A>
<P>
<H3><FONT COLOR="#883300">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>fn </B></TD><TD> - the math function context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>A </B></TD><TD> - matrix on which the function must be evaluated
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Output Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0"><TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>v </B></TD><TD> - vector to hold the first column of f(A)
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
This operation is similar to <A HREF="../FN/FNEvaluateFunctionMat.html#FNEvaluateFunctionMat">FNEvaluateFunctionMat</A>() but returns only
the first column of f(A), hence saving computations in most cases.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../FN/FNEvaluateFunction.html#FNEvaluateFunction">FNEvaluateFunction</A>(), <A HREF="../FN/FNEvaluateFunctionMat.html#FNEvaluateFunctionMat">FNEvaluateFunctionMat</A>()
<BR><P><B><FONT COLOR="#883300">Location: </FONT></B><A HREF="../../../src/sys/classes/fn/interface/fnbasic.c.html#FNEvaluateFunctionMatVec">src/sys/classes/fn/interface/fnbasic.c</A>
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