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
See Also#
SNES: Nonlinear Solvers, SNES, SNESLineSearch, SNESLineSearchGetNorms(), SNESLineSearchSetVecs()
Level#
advanced
Location#
Examples#
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages