petsc-3.11.4 2019-09-28
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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 -linesearch context
order -The damping parameter

Possible 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

Notes

Variable orders are supported by the following line searches

bt - cubic and quadratic
cp - linear and quadratic

See Also

SNESLineSearchGetOrder(), SNESLineSearchSetDamping()

Level

intermediate

Location

src/snes/linesearch/interface/linesearch.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages