SNESLineSearchGetVecs#

Gets the vectors from the SNESLineSearch context

Synopsis#

#include "petscsnes.h" 
PetscErrorCode SNESLineSearchGetVecs(SNESLineSearch linesearch, Vec *X, Vec *F, Vec *Y, Vec *W, Vec *G)

Not Collective but the vectors are parallel

Input Parameter#

linesearch - the line search context

Output Parameters#

X - Solution vector
F - Function vector
Y - Search direction vector
W - Solution work vector
G - Function work vector

Notes#

At the beginning of a line search application, X should contain a solution and the vector F the function computed at X. At the end of the line search application, X should contain the new solution, and F the function evaluated at the new solution.

These vectors are owned by the SNESLineSearch and should not be destroyed by the caller