CppAD: A C++ Algorithmic Differentiation Package  20130918
template<class Base >
void CppAD::forward_sign_op ( size_t  p,
size_t  q,
size_t  i_z,
size_t  i_x,
size_t  nc_taylor,
Base *  taylor 
) [inline]

Compute forward mode Taylor coefficient for result of op = SignOp.

The C++ source code corresponding to this operation is

	z = sign(x)
Template Parameters:
Basebase type for the operator; i.e., this operation was recorded using AD< Base > and computations by this routine are done using type Base.
Parameters:
plowest order of the Taylor coefficient that we are computing.
qhighest order of the Taylor coefficient that we are computing.
i_zvariable index corresponding to the result for this operation; i.e. the row index in taylor corresponding to z.
i_xvariable index corresponding to the argument for this operator; i.e. the row index in taylor corresponding to x.
nc_taylornumber of colums in the matrix containing all the Taylor coefficients.
taylorInput: taylor [ i_x * nc_taylor + k ], for k = 0 , ... , q, is the k-th order Taylor coefficient corresponding to x.
Input: taylor [ i_z * nc_taylor + k ], for k = 0 , ... , p-1, is the k-th order Taylor coefficient corresponding to z.
Output: taylor [ i_z * nc_taylor + k ], for k = p , ... , q, is the k-th order Taylor coefficient corresponding to z.
Checked Assertions
  • NumArg(op) == 1
  • NumRes(op) == 1
  • i_x < i_z
  • q < nc_taylor
  • p <= q

Definition at line 34 of file sign_op.hpp.

Referenced by forward1sweep().

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