functionpetsc-3.5.4 2015-05-23err = nlfunction(snes,x,f,ctx) % % Example of a nonlinear function needed by SNES % err = 0; f(:) = x(:).*x(:) - 1;
functionpetsc-3.5.4 2015-05-23err = nlfunction(snes,x,f,ctx) % % Example of a nonlinear function needed by SNES % err = 0; f(:) = x(:).*x(:) - 1;