STBackTransform#
Back-transformation phase, intended for spectral transformations which require to transform the computed eigenvalues back to the original eigenvalue problem.
Synopsis#
#include "slepcst.h"
PetscErrorCode STBackTransform(ST st,PetscInt n,PetscScalar* eigr,PetscScalar* eigi)
Not Collective
Input Parameters#
st - the spectral transformation context
n - number of eigenvalues
eigr - real part of a computed eigenvalues
eigi - imaginary part of a computed eigenvalues
See Also#
STIsInjective()
Level#
developer
Location#
Implementations#
STBackTransform_Cayley() in src/sys/classes/st/impls/cayley/cayley.c
STBackTransform_Shell() in src/sys/classes/st/impls/shell/shell.c
STBackTransform_Shift() in src/sys/classes/st/impls/shift/shift.c
STBackTransform_Sinvert() in src/sys/classes/st/impls/sinvert/sinvert.c
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