template<class Base >

void CppAD::local::reverse_load_op	(	OpCode	op,
		size_t	d,
		size_t	i_z,
		const addr_t *	arg,
		size_t	cap_order,
		const Base *	taylor,
		size_t	nc_partial,
		Base *	partial,
		const addr_t *	var_by_load_op
	)

inline

Reverse mode for op = LdpOp or LdvOp.

The C++ source code corresponding to this operation is

     v[x] = y

where v is a VecAD<Base> vector, x is an AD<Base> object, and y is AD<Base> or Base objects. We define the index corresponding to v[x] by

     i_v_x = index_by_ind[ arg[0] + i_vec ]

where i_vec is defined under the heading arg[1] below:

This routine is given the partial derivatives of a function G(z , y[x] , w , u ... ) and it uses them to compute the partial derivatives of

     H( y[x] , w , u , ... ) = G[ z( y[x] ) , y[x] , w , u , ... ]

Template Parameters

Base	base type for the operator; i.e., this operation was recorded using AD< Base > and computations by this routine are done using type Base.

Parameters

op	is the code corresponding to this operator; i.e., LdpOp or LdvOp (only used for error checking).
d	highest order the Taylor coefficient that we are computing the partial derivative with respect to.
i_z	is the AD variable index corresponding to the variable z.
arg	arg[2] Is the index of this vecad load instruction in the var_by_load_op array.
cap_order	number of columns in the matrix containing the Taylor coefficients (not used).
taylor	matrix of Taylor coefficients (not used).
nc_partial	number of colums in the matrix containing all the partial derivatives (not used if arg[2] is zero).
partial	If arg[2] is zero, y[x] is a parameter and no values need to be modified; i.e., partial is not used. Otherwise, y[x] is a variable and: partial [ i_z * nc_partial + k ] for k = 0 , ... , d is the partial derivative of G with respect to the k-th order Taylor coefficient for z. If arg[2] is not zero, partial [ arg[2] * nc_partial + k ] for k = 0 , ... , d is the partial derivative with respect to the k-th order Taylor coefficient for x. On input, it corresponds to the function G, and on output it corresponds to the the function H.
var_by_load_op	is a vector with size play->num_load_op_rec(). It contains the variable index corresponding to each load instruction. In the case where the index is zero, the instruction corresponds to a parameter (not variable).

Checked Assertions

Definition at line 547 of file load_op.hpp.