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 (- SNESLINESEARCHBTsupports 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
Index of all SNES routines
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