petsc-3.8.4 2018-03-24

SNESFunction

Functional form used to convey the nonlinear function to be solved by SNES

#include "petscsnes.h"
PetscErrorCode SNESFunction(SNES snes,Vec x,Vec f,void *ctx);

	snes	- the SNES context
	x	- state at which to evaluate residual
	ctx	- optional user-defined function context, passed in with SNESSetFunction()

f -vector to put residual (function value)