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template<class Base >
void reverse_load_op |
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OpCode |
op, |
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size_t |
d, |
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size_t |
i_z, |
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const size_t * |
arg, |
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size_t |
nc_taylor, |
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const Base * |
taylor, |
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size_t |
nc_partial, |
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Base * |
partial |
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Reverse mode for op = LdpOp or LdvOp.
The C++ source code corresponding to this operation is
where y is a VecAD<Base> vector and x is an AD<Base> or Base index.
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:
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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:
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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] If y[x] is a parameter, arg[2] is zero (which is not a valid variable index). If y[x] is a variable, arg[2] is the variable index corresponding to y[x]. |
nc_taylor | 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. |
- Checked Assertions
- NumArg(op) == 3
- NumRes(op) == 1
- d < nc_taylor
- arg[2] < i_z
Definition at line 268 of file load_op.hpp.
Referenced by ReverseSweep().
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