NEPApplyJacobian

Applies the nonlinear Jacobian T'(lambda) to a given vector.

Synopsis

#include "slepcnep.h" 
PetscErrorCode NEPApplyJacobian(NEP nep,PetscScalar lambda,Vec x,Vec v,Vec y,Mat *A,MatStructure *flg)
Collective on NEP

Input Parameters

nep - the nonlinear eigensolver context
lambda - scalar argument
x - vector to be multiplied against
v - workspace vector

Output Parameters

y - result vector
A - Jacobian matrix
flg - flag indicating matrix structure (see MatStructure enum)

Note

If the nonlinear operator is represented in split form, the result y = T'(lambda)*x is computed without building T'(lambda) explicitly. In that case, parameters A and flg are not used. Otherwise, the matrix T'(lambda) is built and the effect is the same as a call to NEPComputeJacobian() followed by a MatMult().

See Also

NEPSetSplitOperator(), NEPComputeJacobian()

Location: src/nep/interface/nepsolve.c
Index of all NEP routines
Table of Contents for all manual pages
Index of all manual pages