slepc-3.22.2 2024-12-02
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# SVDConvergenceTestFn

A prototype of an SVD convergence test function that would be passed to SVDSetConvergenceTestFunction()

### Synopsis

    PETSC_EXTERN_TYPEDEF typedef PetscErrorCode(SVDConvergenceTestFn)(SVD svd,PetscReal sigma,PetscReal res,PetscReal *errest,void *ctx);

### Calling Sequence

| svd | - singular value solver context obtained from SVDCreate()
| sigma | - computed singular value
| res | - residual norm associated to the singular triplet
| errest | - [output] computed error estimate
| ctx | - [optional] user-defined context for private data for the convergence test routine (may be NULL)

### See Also

SVDSetConvergenceTestFunction()

### Level

advanced

### Location

include/slepcsvd.h
Index of all SVD routines
Table of Contents for all manual pages
Index of all manual pages