
#include nagmk26.h

On entry,  ${\mathbf{n}}<1$, 
or  ${\mathbf{nnz}}<0$, 
or  ${\mathbf{dup}}\ne \text{'R'},\text{'S'}$, or 'F', 
or  ${\mathbf{zer}}\ne \text{'R'},\text{'K'}$, or 'F'. 
$$A=\left(\begin{array}{ccccc}2.00& 1.00& 0& 0& 0\\ 0& 0& 1.00& 1.00& 0\\ 4.00& 0& 1.00& 0& 1.00\\ 0& 0& 0& 1.00& 2.00\\ 0& 2.00& 0& 0& 3.00\end{array}\right)\text{.}$$ 