SVDConv#

The convergence criterion to be used by the solver.

Synopsis#

typedef enum { SVD_CONV_ABS,
               SVD_CONV_REL,
               SVD_CONV_NORM,
               SVD_CONV_MAXIT,
               SVD_CONV_USER } SVDConv;

Values#

  • SVD_CONV_ABS - absolute convergence criterion, \(\|r\|\)

  • SVD_CONV_REL - convergence criterion relative to singular value, \(\|r\|/\sigma\)

  • SVD_CONV_NORM - convergence criterion relative to matrix norms, \(\|r\|/\max\{\|A\|,\|B\|\}\)

  • SVD_CONV_MAXIT - no convergence until maximum number of iterations has been reached

  • SVD_CONV_USER - convergence dictated by user-provided function

Note#

The SVD_CONV_MAXIT convergence criterion is used only in SVDRANDOMIZED.

See Also#

SVD: Singular Value Decomposition, SVDSetConvergenceTest(), SVDSetConvergenceTestFunction(), SVDSetTolerances()

Level#

intermediate

Location#

include/slepcsvd.h

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