FNPhiSetIndex#

Sets the index of the phi-function.

Synopsis#

#include "slepcfn.h" 
PetscErrorCode FNPhiSetIndex(FN fn,PetscInt k)

Logically Collective

Input Parameters#

  • fn - the math function context

  • k - the index

Notes#

The phi-functions are defined as follows. The default is k=1.

      phi_0(x) = exp(x)
      phi_1(x) = (exp(x)-1)/x
      phi_k(x) = (phi_{k-1}(x)-1/(k-1)!)/x

See Also#

FNPhiGetIndex()

Level#

intermediate

Location#

src/sys/classes/fn/impls/phi/fnphi.c

Examples#

src/mfn/tutorials/ex39.c

Implementations#

FNPhiSetIndex_Phi() in src/sys/classes/fn/impls/phi/fnphi.c

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