EPSPowerSetSignNormalization#

Sets a flag to indicate whether the Bx vector should be normalized by the sign of the first non-zero element in the vector. E.g., if this is true, the post-normalization value of the first non-zero element in the vector is guaranteed to be positive.

Synopsis#

#include "slepceps.h" 
PetscErrorCode EPSPowerSetSignNormalization(EPS eps,PetscBool sign_normalization)

Logically Collective

Input Parameters#

  • eps - the linear eigensolver context

  • sign_normalization - whether Bx should be multiplied by the sign of the first non-zero element when performing normalization steps

Options Database Key#

  • -eps_power_sign_normalization - Sets the sign normalization flag

See Also#

EPS: Eigenvalue Problem Solver, EPSPowerGetSignNormalization()

Level#

advanced

Location#

src/eps/impls/power/power.c

Examples#

src/eps/tutorials/ex34.c

Implementations#

EPSPowerSetSignNormalization_Power() in src/eps/impls/power/power.c

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