SNESLineSearchSetOrder

Sets the maximum order of the polynomial fit used in the line search

Synopsis

#include "petscsnes.h" 
PetscErrorCode SNESLineSearchSetOrder(SNESLineSearch linesearch, PetscInt order)

Input Parameters

• linesearch - the line search context

• order - The order

Values for order:

• 1 or SNES_LINESEARCH_ORDER_LINEAR - linear order

• 2 or SNES_LINESEARCH_ORDER_QUADRATIC - quadratic order

• 3 or SNES_LINESEARCH_ORDER_CUBIC - cubic order

Options Database Key

• -snes_linesearch_order - 1, 2, 3. Most types only support certain orders (SNESLINESEARCHBT supports 2 or 3)

Note

These orders are supported by SNESLINESEARCHBT and SNESLINESEARCHCP

See Also

SNES: Nonlinear Solvers, SNES, SNESLineSearch, SNESLineSearchGetOrder(), SNESLineSearchSetDamping()

Level

intermediate

Location

src/snes/linesearch/interface/linesearch.c

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