petsc-3.5.2 2014-09-08
Report Typos and Errors

MatGetInertia

Gets the inertia from a factored matrix

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatGetInertia(Mat mat,PetscInt *nneg,PetscInt *nzero,PetscInt *npos)
Collective on Mat

Input Parameter

mat -the matrix

Output Parameters

nneg - number of negative eigenvalues
nzero - number of zero eigenvalues
npos - number of positive eigenvalues

Notes: Matrix must have been factored by MatCholeskyFactor()

Level:advanced
Location:
src/mat/interface/matrix.c
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages