PCPFLAREINVSetPolyCoeffs

Sets (copies in) the polynomial coefficients used by PCPFLAREINV

Synopsis

PetscErrorCode PCPFLAREINVSetPolyCoeffs(PC pc, PetscReal *coeffs, PetscInt rows, PetscInt cols)

Logically Collective

Input Parameters

• pc - the PCPFLAREINV preconditioner context

• coeffs - the column-major array of polynomial coefficients

• rows - the number of rows, equal to the polynomial order plus one

• cols - the number of columns, 1 for the power, Arnoldi, and Neumann inverse types, or 2 for the Newton types

Note

This routine copies the data from coeffs into the PCPFLAREINV object; the caller’s array is not referenced after this call and may be freed or modified. It does not itself trigger a rebuild of the approximate inverse - combine with PCPFLAREINVSetReusePolyCoeffs() to have the next PCSetUp() reuse these coefficients.

See Also

KSP: Linear System Solvers, PCPFLAREINV, PCPFLAREINVGetPolyCoeffs(), PCPFLAREINVSetReusePolyCoeffs()

Level

advanced

Index of all PC routines
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Index of all manual pages