slepc-3.20.2 2024-03-15
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SVDTRLanczosGetScale

Gets the scale parameter for the GSVD.

Synopsis

#include "slepcsvd.h" 
PetscErrorCode SVDTRLanczosGetScale(SVD svd,PetscReal *scale)
Not Collective

Input Parameter

svd  - the singular value solver

Output Parameter

scale  - the scale parameter

Notes

This parameter is relevant for the GSVD case only. If the parameter is positive, it indicates the scale factor for B in matrix Z=[A;B]. If negative, its absolute value is the threshold for automatic scaling.

See Also

SVDTRLanczosSetScale()

Level

advanced

Location

src/svd/impls/trlanczos/trlanczos.c

Index of all SVD routines
Table of Contents for all manual pages
Index of all manual pages