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 betaf(alphax).
See Also#
FNEvaluateDerivative(), FNEvaluateFunctionMat(), FNSetScale()
Level#
intermediate
Location#
Implementations#
FNEvaluateFunction_Combine() in src/sys/classes/fn/impls/combine/fncombine.c
FNEvaluateFunction_Exp() in src/sys/classes/fn/impls/exp/fnexp.c
FNEvaluateFunction_Invsqrt() in src/sys/classes/fn/impls/invsqrt/fninvsqrt.c
FNEvaluateFunction_Log() in src/sys/classes/fn/impls/log/fnlog.c
FNEvaluateFunction_Phi() in src/sys/classes/fn/impls/phi/fnphi.c
FNEvaluateFunction_Rational() in src/sys/classes/fn/impls/rational/fnrational.c
FNEvaluateFunction_Sqrt() in src/sys/classes/fn/impls/sqrt/fnsqrt.c
Index of all FN routines Table of Contents for all manual pages Index of all manual pages