PETSc version 3.15.5
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MatQRFactorNumeric

 Performs numeric QR factorization of a matrix. Call this routine after first calling MatQRFactorSymbolic().

Synopsis

#include "petscmat.h" 
PetscErrorCode MatQRFactorNumeric(Mat fact,Mat mat,const MatFactorInfo *info)
Collective on Mat

Input Parameters

fact - the factor matrix obtained with MatGetFactor()
mat - the matrix
info - options for factorization

Notes

See MatQRFactor() for in-place factorization.

Most users should employ the simplified KSP interface for linear solvers instead of working directly with matrix algebra routines such as this. See, e.g., KSPCreate().

See Also

MatQRFactorSymbolic(), MatLUFactor()

Developer Note: fortran interface is not autogenerated as the f90 interface defintion cannot be generated correctly [due to MatFactorInfo]

Level

developer

Location

src/mat/interface/matrix.c

Implementations

MatQRFactorNumeric_SeqDense in src/mat/impls/dense/seq/dense.c

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