from org.ejml.data import DenseMatrix64F 
from org.ejml.ops  import MatrixFeatures 

A=DenseMatrix64F(2,2)
A.set(0,1,2)
A.set(1,0,-2.0000000001)
A.print()

if  MatrixFeatures.isSkewSymmetric(A,1e-8): 
    print "Is skew symmetric!"
else:
    print "Should be skew symmetric!"