e05jhc is used to check if you have set an optional parameter of
e05jbc. The initialization function
e05jac must have been called before calling
e05jhc.
e05jhc returns 1 if you have previously set the optional parameter contained in
optstr, otherwise it returns 0.
A complete list of optional parameters, their symbolic names and default values is given in
Section 12 in
e05jbc.
None.
Not applicable.
None.