slepc-3.20.2 2024-03-15
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FNEvaluateFunctionMatVec

Computes the first column of the matrix f(A) for a given matrix A.

Synopsis

#include "slepcfn.h" 
PetscErrorCode FNEvaluateFunctionMatVec(FN fn,Mat A,Vec v)
Logically Collective

Input Parameters

fn  - the math function context
A  - matrix on which the function must be evaluated

Output Parameter

v  - vector to hold the first column of f(A)

Notes

This operation is similar to FNEvaluateFunctionMat() but returns only the first column of f(A), hence saving computations in most cases.

See Also

FNEvaluateFunction(), FNEvaluateFunctionMat(), FNSetMethod()

Level

advanced

Location

src/sys/classes/fn/interface/fnbasic.c

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