
#include nagmk26.h

On entry,  ${\mathbf{jceval}}\ne \text{'N'}$, $\text{'A'}$ or $\text{'D'}$, 
or  ${\mathbf{neq}}<1$, 
or  ${\mathbf{ml}}<0$ or ${\mathbf{ml}}>{\mathbf{neq}}1$, 
or  ${\mathbf{mu}}<0$ or ${\mathbf{mu}}>{\mathbf{neq}}1$, 
or  ${\mathbf{neq}}>{\mathbf{neqmax}}$, 
or  ${\mathbf{njcpvt}}<{\mathbf{neqmax}}$, 
or  ${\mathbf{nwkjac}}<\left(2\times {\mathbf{ml}}+{\mathbf{mu}}+1\right)\times {\mathbf{neqmax}}$. 