naginterfaces.library.ode.ivp_stiff_interp¶
- naginterfaces.library.ode.ivp_stiff_interp(tsol, m, comm)[source]¶
ivp_stiff_interp
interpolates components of the solution of a system of first-order differential equations from information provided by those integrators in submoduleode
using methods set up by calls toivp_stiff_dassl()
,ivp_stiff_bdf()
orivp_stiff_blend()
.For full information please refer to the NAG Library document for d02mz
https://support.nag.com/numeric/nl/nagdoc_30.2/flhtml/d02/d02mzf.html
- Parameters
- tsolfloat
The point at which the first components of the solution are to be evaluated. should not normally be an extrapolation point. Extrapolation is permitted but not recommended.
- mint
The number of components of the solution whose values are required.
- commdict, communication object
Communication structure.
This argument must have been initialized by a prior call to
ivp_stiff_exp_fulljac()
,ivp_stiff_exp_bandjac()
,ivp_stiff_exp_sparjac()
,ivp_stiff_imp_fulljac()
,ivp_stiff_imp_bandjac()
,ivp_stiff_imp_sparjac()
,ivp_stiff_exp_revcom()
orivp_stiff_imp_revcom()
.
- Returns
- solfloat, ndarray, shape
The calculated value of the solution at .
- Raises
- NagValueError
- (errno )
On entry, and .
Constraint: .
- (errno )
On entry, and .
Constraint: .
- (errno )
On entry, .
Constraint: .
- (errno )
On entry, .
Constraint: .
- (errno )
Either the integrator function has not been called prior to the first call of this function or the array has become corrupted.
- Warns
- NagAlgorithmicWarning
- (errno )
On entry, is an extrapolation point.
- Notes
No equivalent traditional C interface for this routine exists in the NAG Library.
ivp_stiff_interp
evaluates the first components of the solution of a system of ordinary differential equations at any point using natural polynomial interpolation based on information generated by the integrator. This information must be passed unchanged toivp_stiff_interp
.ivp_stiff_interp
should not normally be used to extrapolate outside the range of values obtained from the above function.