nag::ad::g02ab Tangent over Adjoint Example Program Results Nearest Correlation Matrix: 1.00000e+00 -9.37102e-01 2.61698e-02 8.74155e-03 -9.37102e-01 1.00000e+00 -3.06853e-01 2.31533e-01 2.61698e-02 -3.06853e-01 1.00000e+00 -9.03667e-01 8.74155e-03 2.31533e-01 -9.03667e-01 1.00000e+00 Derivatives calculated: Second order adjoints Computational mode : algorithmic Sum of Hessian elements of NCM X w.r.t. input matrix G: sum_ij [d2X/dG2]_ij = -2.70603e+04