On exit

fCon(nnCon)

contains the computed constraint vector F(x) (except perhaps if mode = 1).

gCon(nnCon, nnJac) or gCon(neJac)

contains the computed Jacobian J(x) (except perhaps if mode = 0).

These gradient elements must be stored in gCon in exactly the same positions as implied by the definitions of snopt's arrays a, ha, ka.  There is no internal check for consistency (except indirectly via the Verify option, so great care is essential.

mode

may be set as in funobj.