CppAD: A C++ Algorithmic Differentiation Package  20130102
template<class Base >
void forward_dis_op_0 ( size_t  i_z,
const addr_t *  arg,
size_t  nc_taylor,
Base *  taylor 
) [inline]

Compute zero order forward mode Taylor coefficient for result of op = DisOp.

The C++ source code corresponding to this operation is

	z = f(x)

where f is a piecewise constant function (and it's derivative is always calculated as zero).

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:
i_zvariable index corresponding to the result for this operation; i.e. the row index in taylor corresponding to z.
argarg[0]
is the index, in the order of the discrete functions defined by the user, for this discrete function.

arg[1] variable 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 [ arg[1] * nc_taylor + 0 ] is the zero order Taylor coefficient corresponding to x.
Output: taylor [ i_z * nc_taylor + 0 ] is the zero order Taylor coefficient corresponding to z.
Checked Assertions where op is the unary operator with one result:
  • NumArg(op) == 2
  • NumRes(op) == 1
  • arg[1] < i_z
  • 0 < nc_taylor

Definition at line 73 of file discrete_op.hpp.

Referenced by forward0sweep(), and forward_sweep().

 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines