pub unsafe extern "C" fn SUNNonlinSolSetLSolveFn(
NLS: SUNNonlinearSolver,
SolveFn: SUNNonlinSolLSolveFn,
) -> SUNErrCodepub unsafe extern "C" fn SUNNonlinSolSetLSolveFn(
NLS: SUNNonlinearSolver,
SolveFn: SUNNonlinSolLSolveFn,
) -> SUNErrCode