slepc-3.20.2 2024-03-15
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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


Index of all FN routines
Table of Contents for all manual pages
Index of all manual pages