petsc-master 2017-02-25
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SNESLineSearchSetType

Sets the linesearch type

Synopsis

#include "petscsnes.h" 
PetscErrorCode SNESLineSearchSetType(SNESLineSearch linesearch, SNESLineSearchType type)
Logically Collective on SNESLineSearch

Input Parameters

linesearch - linesearch context
type - The type of line search to be used

Available Types

SNESLINESEARCHBASIC - Simple damping line search, defaults to using the full Newton step
SNESLINESEARCHBT - Backtracking line search over the L2 norm of the function
SNESLINESEARCHL2 - Secant line search over the L2 norm of the function
SNESLINESEARCHCP - Critical point secant line search assuming F(x) = grad G(x) for some unknown G(x)
SNESLINESEARCHNLEQERR - Affine-covariant error-oriented linesearch
SNESLINESEARCHSHELL - User provided SNESLineSearch implementation

Options Database

-snes_linesearch_type <type> -basic, bt, l2, cp, nleqerr, shell

See Also

SNESLineSearchCreate(), SNESLineSearchType, SNESLineSearchSetFromOptions()

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

Examples

src/snes/examples/tutorials/ex1f.F.html
src/ts/examples/tutorials/ex22.c.html
src/ts/examples/tutorials/ex22f.F.html