X10AA_A1W_F C Header Example Program Results Computing ln(1+x) and its adjoint using s01ba Symbolic computational mode is being used AD computation failed as expected with ifail = -199 Algorithmic computational mode is being used Input value of x : 1.000e-01 Output value of ln(1+x) : 9.531e-02 AD evaluated derivative : 9.091e-01 Directly computed derivative : 9.091e-01