matrix B.

  LDB     INTEGER
          The leading dimension of the array B.
          LDB &gt;= MAX(1,M),  if TRANB = 'N';
          LDB &gt;= MAX(1,N),  if TRANB = 'C' or TRANB = 'T'.

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<B>Workspace</B>
<PRE>
  DWORK   DOUBLE PRECISION array, dimension (LDWORK), where
          LDWORK &gt;= 8*N*K,   if STRAB = 'Z',
          LDWORK &gt;= 9*N*K,   if STRAB = 'N'.

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<A name="References"><B><FONT SIZE="+1">References</FONT></B></A>
<PRE>
  [1] Kressner, D.
      Block algorithms for orthogonal sy