SNESNewtonALGetLoadParameter#
Get the value of the load parameter lambda for the arc-length continuation method.
Synopsis#
#include "petscsnes.h"
PetscErrorCode SNESNewtonALGetLoadParameter(SNES snes, PetscReal *lambda)
Logically Collective
Input Parameter#
snes - the nonlinear solver object
Output Parameter#
lambda - the arc-length parameter
Notes#
This function should be used in the functions provided to SNESSetFunction() and SNESNewtonALSetFunction()
to compute the residual and tangent load vectors for a given value of lambda (0 <= lambda <= 1).
Usually, lambda is used to scale the external force vector in the residual function, i.e. proportional loading,
in which case the tangent load vector is the full external force vector.
See Also#
SNES: Nonlinear Solvers, SNES, SNESNEWTONAL, SNESNewtonALSetFunction()
Level#
intermediate
Location#
Examples#
Implementations#
SNESNewtonALGetLoadParameter_NEWTONAL() in src/snes/impls/al/al.c
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages