is the AD Library version of the primal routine
Based (in the C++ interface) on overload resolution,
s15ad can be used for primal, tangent and adjoint
evaluation. It supports tangents and adjoints of first order.
Corresponding to the overloaded C++ function, the Fortran interface provides five routines with names reflecting the type used for active real arguments. The actual subroutine and type names are formed by replacing AD and ADTYPE in the above as follows:
Cody W J (1969) Rational Chebyshev approximations for the error function Math.Comp.23 631–637
In addition to the arguments present in the interface of the primal routine,
s15ad includes some arguments specific to AD.
A brief summary of the AD specific arguments is given below. For the remainder, links are provided to the corresponding argument from the primal routine.
A tooltip popup for all arguments can be found by hovering over the argument name in Section 2 and in this section.
Note that the primal routine
is a function whereas s15ad_a1w_f,
is a subroutine, where the function value is returned in the additional output parameter, res.