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
if you have previously set the optional parameter contained in
optstr, otherwise it returns
.
A complete list of optional parameters, their symbolic names and default values is given in
Section 12 in
e05jbc.
None.
Not applicable.
None.