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CppAD: A C++ Algorithmic Differentiation Package
20130918
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| void CppAD::forward_pow_op | ( | size_t | p, |
| size_t | q, | ||
| size_t | i_z, | ||
| const addr_t * | arg, | ||
| const Base * | parameter, | ||
| size_t | nc_taylor, | ||
| Base * | taylor | ||
| ) | [inline] |
Prototype for forward mode z = pow(x, y) (not used).
| 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. |
| p | lowest order of the Taylor coefficient that we are computing. |
| q | highest order of the Taylor coefficient that we are computing. |
| i_z | variable index corresponding to the last (primary) result for this operation; i.e. the row index in taylor corresponding to z. Note that there are three results for this operation, below they are referred to as z_0, z_1, z_2 and correspond to z_0 = log(x) z_1 = z0 * y z_2 = exp(z1) |
| arg | arg[0] index corresponding to the left operand for this operator; i.e. the index corresponding to x. arg[1] index corresponding to the right operand for this operator; i.e. the index corresponding to y. |
| parameter | If x is a parameter, parameter [ arg[0] ] is the value corresponding to x. If y is a parameter, parameter [ arg[1] ] is the value corresponding to y. |
| nc_taylor | number of colums in the matrix containing all the Taylor coefficients. |
| taylor | Input: If x is a variable, taylor [ arg[0] * nc_taylor + k ] for k = 0 , ... , q, is the k-th order Taylor coefficient corresponding to x. Input: If y is a variable, taylor [ arg[1] * nc_taylor + k ] for k = 0 , ... , q is the k-th order Taylor coefficient corresponding to y. Input: taylor [ (i_z-2+j) * nc_taylor + k ], for j = 0, 1, 2 , for k = 0 , ... , p-1, is the k-th order Taylor coefficient corresponding to z_j. Output: taylor [ (i_z-2+j) * nc_taylor + k ], is the k-th order Taylor coefficient corresponding to z_j. |
Definition at line 746 of file prototype_op.hpp.