SNESSetInitialFunction

Set an already computed function evaluation at the initial guess to be reused by SNESSolve().

Synopsis

#include "petscsnes.h"  
PetscErrorCode SNESSetInitialFunction(SNES snes, Vec f)

Logically Collective

Input Parameters

• snes - the SNES context

• f - vector to store function value

Notes

This should not be modified during the solution procedure.

This is used extensively in the SNESFAS hierarchy and in nonlinear preconditioning.

See Also

SNES: Nonlinear Solvers, SNES, SNESFAS, SNESSetFunction(), SNESComputeFunction(), SNESSetInitialFunctionNorm()

Level

developer

Location

src/snes/interface/snes.c

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Index of all SNES routines
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Index of all manual pages