tree 8eadd5da25098a626308100966b3af7d84b07f83
parent cbc86f65125f458678960074184b00ed0dbfc84b
author Sameer Agarwal <sameeragarwal@google.com> 1657768137 -0700
committer Sameer Agarwal <sameeragarwal@google.com> 1657806409 -0700

Speed up DenseSparseMatrix::SquareColumnNorm.

Because we store the matrix as row major matrix, the
obvious Eigen expression performs rather poorly. A straight
c++ loop speeds things up considerably.

Also replace use of matrix() with direct use of m_.

Change-Id: I3d6166df4765ad8400ab9602a54b65fd21b1d50f