# Nonlinear Solvers (SNES) The Scalable Nonlinear Equations Solvers (`SNES`) component provides an easy-to-use interface to Newton-type, quasi-Newton, full approximation scheme (FAS) multigrid, and other methods for solving systems of nonlinear equations. User guide chapter: [](ch_snes). `SNES` internally employs `KSP` for the solution of its linear systems. `SNES` users can also set `KSP` options directly in application codes by first extracting the `KSP` context from the `SNES` context via `SNESGetKSP()` and then directly calling various `KSP` (and `PC`) routines, Examples

Source files

dmsnes.c
convest.c
dmdasnes.c
dmlocalsnes.c
dmplexsnes.c

Directories

dm
ftn-custom