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<H1>DSNormalize</H1>
Normalize a column or all the columns of a matrix. Considers the case when the columns represent the real and the imaginary part of a vector.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcds.h"
PetscErrorCode DSNormalize(DS ds,DSMatType mat,PetscInt col)
</PRE>
Logically Collective on <A HREF="../DS/DS.html#DS">DS</A>
<P>
<H3><FONT COLOR="#883300">Input Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>ds </B></TD><TD> - the direct solver context
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>mat </B></TD><TD> - the matrix to be modified
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>col </B></TD><TD> - the column to normalize or -1 to normalize all of them
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
The columns are normalized with respect to the 2-norm.
<P>
If col and col+1 (or col-1 and col) represent the real and the imaginary
part of a vector, both columns are scaled.
<P>
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../DS/DSMatType.html#DSMatType">DSMatType</A>
<BR><P><B><FONT COLOR="#883300">Location: </FONT></B><A HREF="../../../src/ds/interface/dsops.c.html#DSNormalize">src/ds/interface/dsops.c</A>
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