petsc-3.7.7 2017-09-25
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SNESLineSearchSetOrder

 Sets the line search damping paramter.

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()

Level:intermediate
Location:src/snes/linesearch/interface/linesearch.c
Index of all SNES routines
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Index of all manual pages