slepc-3.17.1 2022-04-11

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FNEvaluateFunction

Computes the value of the function f(x) for a given x.

Synopsis

#include "slepcfn.h" 
PetscErrorCode FNEvaluateFunction(FN fn,PetscScalar x,PetscScalar *y)

Not collective

Input Parameters

	fn	- the math function context
	x	- the value where the function must be evaluated

Output Parameter

y

- the result of f(x)

Note

Scaling factors are taken into account, so the actual function evaluation will return beta*f(alpha*x).

See Also

FNEvaluateDerivative(), FNEvaluateFunctionMat(), FNSetScale()

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