slepc-main 2024-12-17
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STSHELL

User-defined spectral transformation via callback functions for the application of the operator to a vector and (optionally) the backtransform operation.

Usage

            extern PetscErrorCode (*apply)(void*,Vec,Vec);

            extern PetscErrorCode (*applytrans)(void*,Vec,Vec);

            extern PetscErrorCode (*applyht)(void*,Vec,Vec);

            extern PetscErrorCode (*backtr)(void*,PetscScalar*,PetscScalar*);



            STCreate(comm,&st);



            STSetType(st,STSHELL);



            STShellSetContext(st,ctx);



            STShellSetApply(st,apply);



            STShellSetApplyTranspose(st,applytrans);        (optional)



            STShellSetApplyHermitianTranspose(st,applyht);  (optional, only in complex scalars)



            STShellSetBackTransform(st,backtr);             (optional)





Level
advanced


Location

src/sys/classes/st/impls/shell/shell.c

Examples

src/eps/tutorials/ex10.c

src/eps/tutorials/ex10f.F90

src/eps/tutorials/ex35.c

src/eps/tutorials/ex36.c



Index of all ST routines

Table of Contents for all manual pages

Index of all manual pages