SNESNewtonALCorrectionType#
the approach used by SNESNEWTONAL to determine the correction to the current increment. While the exact correction satisfies the constraint surface at every iteration, it also requires solving a quadratic equation which may not have real roots. Conversely, the normal correction is more efficient and always yields a real correction and is the default.
Values#
SNES_NEWTONAL_CORRECTION_EXACT- choose the correction which exactly satisfies the constraintSNES_NEWTONAL_CORRECTION_NORMAL- choose the correction in the updated normal hyper-surface to the contraint surface
Options Database Key#
-snes_newtonal_correction_type
- select type from <exact,normal>
See Also#
Level#
intermediate
Location#
Index of all SNES routines
Table of Contents for all manual pages
Index of all manual pages