petsc3.13.6 20200929
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)
Input Parameters
linesearch linesearch 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 Section 1.5 Writing Application Codes with PETSc, X should contain a
solution and the vector F the function computed at X. At the end of the
line search Section 1.5 Writing Application Codes with PETSc, 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
SNESLineSearchGetNorms(), SNESLineSearchSetVecs()
Level
advanced
Location
src/snes/linesearch/interface/linesearch.c
Examples
src/snes/tutorials/ex1f.F90.html
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages