MatMultEqual#
Compares matrix-vector products of two matrices using n
random vectors
Synopsis#
#include "petscmat.h"
PetscErrorCode MatMultEqual(Mat A, Mat B, PetscInt n, PetscBool *flg)
Collective
Input Parameters#
A - the first matrix
B - the second matrix
n - number of random vectors to be tested
Output Parameter#
flg -
PETSC_TRUE
if the products are equal;PETSC_FALSE
otherwise.
Note#
The tolerance for equality is a generous PETSC_SQRT_MACHINE_EPSILON
in the norm of the difference of the two computed vectors to
allow for differences in the numerical computations. Hence this routine may indicate equality even if there is a small systematic difference
between the two matrices.
See Also#
Mat
, MatMultAddEqual()
, MatMultTransposeEqual()
, MatMultTransposeAddEqual()
, MatIsLinear()
, MatEqual()
Level#
intermediate
Location#
Examples#
Index of all Mat routines
Table of Contents for all manual pages
Index of all manual pages