3.5. CVODE Constants

Below we list all input and output constants used by the main solver and linear solver modules, together with their numerical values and a short description of their meaning. Table 3.8 contains the CVODE input constants, and Table 3.9 contains the CVODE output constants.

Table 3.8 CVODE input constants
`CV_ADAMS`	1	Adams-Moulton linear multistep method.
`CV_BDF`	2	BDF linear multistep method.
`CV_NORMAL`	1	Solver returns at specified output time.
`CV_ONE_STEP`	2	Solver returns after each successful step.
`SUN_PREC_NONE`	0	No preconditioning
`SUN_PREC_LEFT`	1	Preconditioning on the left only.
`SUN_PREC_RIGHT`	2	Preconditioning on the right only.
`SUN_PREC_BOTH`	3	Preconditioning on both the left and the right.
`SUN_MODIFIED_GS`	1	Use modified Gram-Schmidt procedure.
`SUN_CLASSICAL_GS`	2	Use classical Gram-Schmidt procedure.

Table 3.9 CVODE output constants
General outputs
`CV_SUCCESS`	0	Successful function return.
`CV_TSTOP_RETURN`	1	CVode succeeded by reaching the specified stopping point.
`CV_ROOT_RETURN`	2	CVode succeeded and found one or more roots.
`CV_WARNING`	99	CVode succeeded but an unusual situation occurred.
`CV_TOO_MUCH_WORK`	-1	The solver took `mxstep` internal steps but could not reach tout.
`CV_TOO_MUCH_ACC`	-2	The solver could not satisfy the accuracy demanded by the user for some internal step.
`CV_ERR_FAILURE`	-3	Error test failures occurred too many times during one internal time step or minimum step size was reached.
`CV_CONV_FAILURE`	-4	Convergence test failures occurred too many times during one internal time step or minimum step size was reached.
`CV_LINIT_FAIL`	-5	The linear solver’s initialization function failed.
`CV_LSETUP_FAIL`	-6	The linear solver’s setup function failed in an unrecoverable manner.
`CV_LSOLVE_FAIL`	-7	The linear solver’s solve function failed in an unrecoverable manner.
`CV_RHSFUNC_FAIL`	-8	The right-hand side function failed in an unrecoverable manner.
`CV_FIRST_RHSFUNC_ERR`	-9	The right-hand side function failed at the first call.
`CV_REPTD_RHSFUNC_ERR`	-10	The right-hand side function had repeated recoverable errors.
`CV_UNREC_RHSFUNC_ERR`	-11	The right-hand side function had a recoverable error, but no recovery is possible.
`CV_RTFUNC_FAIL`	-12	The rootfinding function failed in an unrecoverable manner.
`CV_NLS_INIT_FAIL`	-13	The nonlinear solver’s init routine failed.
`CV_NLS_SETUP_FAIL`	-14	The nonlinear solver’s setup routine failed.
`CV_CONSTR_FAIL`	-15	The inequality constraints were violated and the solver was unable to recover.
`CV_NLS_FAIL`	-16	The nonlinear solver failed in an unrecoverable manner.
`CV_MEM_FAIL`	-20	A memory allocation failed.
`CV_MEM_NULL`	-21	The `cvode_mem` argument was `NULL`.
`CV_ILL_INPUT`	-22	One of the function inputs is illegal.
`CV_NO_MALLOC`	-23	The CVODE memory block was not allocated by a call to `CVodeMalloc`.
`CV_BAD_K`	-24	The derivative order $k$ is larger than the order used.
`CV_BAD_T`	-25	The time $t$ is outside the last step taken.
`CV_BAD_DKY`	-26	The output derivative vector is `NULL`.
`CV_TOO_CLOSE`	-27	The output and initial times are too close to each other.
`CV_VECTOROP_ERR`	-28	A vector operation failed.
`CV_PROJ_MEM_NULL`	-29	The projection memory was `NULL`.
`CV_PROJFUNC_FAIL`	-30	The projection function failed in an unrecoverable manner.
`CV_REPTD_PROJFUNC_ERR`	-31	The projection function had repeated recoverable errors.
CVLS linear solver interface outputs
`CVLS_SUCCESS`	0	Successful function return.
`CVLS_MEM_NULL`	-1	The `cvode_mem` argument was `NULL`.
`CVLS_LMEM_NULL`	-2	The CVLS linear solver has not been initialized.
`CVLS_ILL_INPUT`	-3	The CVLS solver is not compatible with the current `N_Vector` module.
`CVLS_MEM_FAIL`	-4	A memory allocation request failed.
`CVLS_PMEM_NULL`	-5	The preconditioner module has not been initialized.
`CVLS_JACFUNC_UNRECVR`	-6	The Jacobian function failed in an unrecoverable manner.
`CVLS_JACFUNC_RECVR`	-7	The Jacobian function had a recoverable error.
`CVLS_SUNMAT_FAIL`	-8	An error occurred with the current {sunmatrix} module.
`CVLS_SUNLS_FAIL`	-9	An error occurred with the current {sunlinsol} module.
CVDIAG linear solver outputs
`CVDIAG_SUCCESS`	0	Successful function return.
`CVDIAG_MEM_NULL`	-1	The `cvode_mem` argument was `NULL`.
`CVDIAG_LMEM_NULL`	-2	The CVDIAG linear solver has not been initialized.
`CVDIAG_ILL_INPUT`	-3	The CVDIAG solver is not compatible with the current `N_Vector` module.
`CVDIAG_MEM_FAIL`	-4	A memory allocation request failed.
`CVDIAG_INV_FAIL`	-5	A diagonal element of the Jacobian was 0.
`CVDIAG_RHSFUNC_UNRECVR`	-6	The right-hand side function failed in an unrecoverable manner.
`CVDIAG_RHSFUNC_RECVR`	-7	The right-hand side function had a recoverable error.