SNESNewtonTRFallbackType

type of fallback in case the solution of the trust-region subproblem is outside of the radius

Synopsis

typedef enum {
  SNES_TR_FALLBACK_NEWTON,
  SNES_TR_FALLBACK_CAUCHY,
  SNES_TR_FALLBACK_DOGLEG,
} SNESNewtonTRFallbackType;

Values

• SNES_TR_FALLBACK_NEWTON - use scaled Newton step

• SNES_TR_FALLBACK_CAUCHY - use Cauchy direction

• SNES_TR_FALLBACK_DOGLEG - use dogleg method

See Also

SNES: Nonlinear Solvers, SNES, SNESNEWTONTR, SNESNEWTONTRDC

Level

intermediate

Location

include/petscsnes.h

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Index of all SNES routines
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