petsc-dev 2014-08-19
Report Typos and Errors

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 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.

See Also

SNESLineSearchGetNorms(), SNESLineSearchSetVecs()

Level:advanced
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