So, for a symmetric, positive definite dense matrix M, the square of M can be computed efficiently in eigen using the

Code: Select all

 SelfAdjointEigenSolver::operatorSqrt()

operators. But what about the inverse square root of M? What is the most efficient way to compute the inverse square
root of a symmetric, positive definite dense matrix M in Eigen?

Solved;)

http://eigen.tuxfamily.org/dox-devel/cl ... 194630360e