nag::ad::g02aa Tangent over Adjoint Example Program Results Nearest Correlation Matrix: 1.000000000000e+00 -8.084124981489e-01 1.915875018502e-01 1.067750490255e-01 -8.084124981489e-01 1.000000000000e+00 -6.562326948064e-01 1.915875018502e-01 1.915875018502e-01 -6.562326948064e-01 1.000000000000e+00 -8.084124981489e-01 1.067750490255e-01 1.915875018502e-01 -8.084124981489e-01 1.000000000000e+00 Derivatives calculated: Second order adjoint Computational mode : algorithmic Sum of Hessian elements of NCM X w.r.t. input matrix G: sum_ij [d2X/dG2]_ij = -2.545650478237e-01