functionpetsc-dev 2014-02-02err = nlfunction(snes,x,f,ctx) % % Example of a nonlinear function needed by SNES % err = 0; f(:) = x(:).*x(:) - 1;
functionpetsc-dev 2014-02-02err = nlfunction(snes,x,f,ctx) % % Example of a nonlinear function needed by SNES % err = 0; f(:) = x(:).*x(:) - 1;