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#

src/snes/linesearch/interface/linesearch.c

Index of all SNES routines
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Index of all manual pages