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<TITLE>SVDLanczosSetOneSide</TITLE>
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<H1>SVDLanczosSetOneSide</H1>
Indicate if the variant of the Lanczos method to be used is one-sided or two-sided.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcsvd.h"
PetscErrorCode SVDLanczosSetOneSide(SVD svd,PetscBool oneside)
</PRE>
Logically Collective on <A HREF="../SVD/SVD.html#SVD">SVD</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>svd </B></TD><TD> - singular value solver
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>oneside </B></TD><TD> - boolean flag indicating if the method is one-sided or not
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Options Database Key</FONT></H3>
<DT><B>-svd_lanczos_oneside <boolean> </B> - Indicates the boolean flag
<br>
<P>
<H3><FONT COLOR="#883300">Note</FONT></H3>
By default, a two-sided variant is selected, which is sometimes slightly
more robust. However, the one-sided variant is faster because it avoids
the orthogonalization associated to left singular vectors. It also saves
the memory required for storing such vectors.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../SVD/SVDTRLanczosSetOneSide.html#SVDTRLanczosSetOneSide">SVDTRLanczosSetOneSide</A>()
<BR><P><B><FONT COLOR="#883300">Location: </FONT></B><A HREF="../../../src/svd/impls/lanczos/gklanczos.c.html#SVDLanczosSetOneSide">src/svd/impls/lanczos/gklanczos.c</A>
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