
On entry,  ${\mathbf{LDCA}}<{n}_{\mathrm{cm}}$, where ${n}_{\mathrm{cm}}={n}_{\mathrm{ct}}/\left(4{n}_{\mathrm{cn}}\right)$ and ${n}_{\mathrm{ct}}$, ${n}_{\mathrm{cn}}$ are returned by the initialization routine C09ABF, 
or  ${\mathbf{LDCH}}<{n}_{\mathrm{cm}}$, 
or  ${\mathbf{LDCV}}<{n}_{\mathrm{cm}}$, 
or  ${\mathbf{LDCD}}<{n}_{\mathrm{cm}}$. 
On entry,  M is inconsistent with the value passed to the initialization routine C09ABF, 
or  N is inconsistent with the value passed to the initialization routine C09ABF. 