functionpetsc-3.3-p4 2012-10-26err = nlfunction(snes,x,f,ctx) % % Example of a nonlinear function needed by SNES % err = 0; f(:) = .5*x(:).*x(:) - 1;
functionpetsc-3.3-p4 2012-10-26err = nlfunction(snes,x,f,ctx) % % Example of a nonlinear function needed by SNES % err = 0; f(:) = .5*x(:).*x(:) - 1;