pub unsafe extern "C" fn SUNLinSolSetScalingVectors(
S: SUNLinearSolver,
s1: N_Vector,
s2: N_Vector,
) -> SUNErrCodepub unsafe extern "C" fn SUNLinSolSetScalingVectors(
S: SUNLinearSolver,
s1: N_Vector,
s2: N_Vector,
) -> SUNErrCode