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# SNES_CONVERGED_FNORM_RELATIVE

\(||F|| \le rtol*||F(x_0)||\) where \(x_0\) is the initial guess

## See Also

SNES: Nonlinear Solvers, `SNES`, `SNESSolve()`, `SNESGetConvergedReason()`, `SNESConvergedReason`, `SNESSetTolerances()`

## Level

beginner

## Location

include/petscsnes.h

Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages