STSetShift#

Sets the shift associated with the spectral transformation.

Synopsis#

#include "slepcst.h" 
PetscErrorCode STSetShift(ST st,PetscScalar shift)

Collective

Input Parameters#

  • st - the spectral transformation context

  • shift - the value of the shift

Notes#

In some spectral transformations, changing the shift may have associated a lot of work, for example recomputing a factorization.

This function is normally not directly called by users, since the shift is indirectly set by EPSSetTarget().

See Also#

EPSSetTarget(), STGetShift(), STSetDefaultShift()

Level#

intermediate

Location#

src/sys/classes/st/interface/stfunc.c

Implementations#

STSetShift_Cayley() in src/sys/classes/st/impls/cayley/cayley.c
STSetShift_Precond() in src/sys/classes/st/impls/precond/precond.c
STSetShift_Shift() in src/sys/classes/st/impls/shift/shift.c
STSetShift_Sinvert() in src/sys/classes/st/impls/sinvert/sinvert.c

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