Modifies a pointer to an array held in a Data Fitting task descriptor.
Descriptor of the task.
df?editptreditor replaces the pointer of type
ptr_attrstored in a Data Fitting task descriptor with a new pointer
ptr. The table below describes types of pointers supported by the editor:
xof the interpolation interval, an array of strictly sorted breakpoints.
The array must be strictly sorted. If it is unordered, the results of data fitting routines are not correct.
You can use
df?editptrto modify different types of pointers including pointers to the vector-valued function and spline coefficients stored in contiguous memory. Use the
df?editidxptreditor if you need to modify pointers to coordinates of the vector-valued function or spline coefficients stored at non-contiguous memory locations.
If you modify a partition of the interpolation interval, then you should call the
dfieditvaltask editor with the corresponding value of
DF_XHINT, even if the structure of the partition remains the same.
If you pass a
NULLpointer to the
df?editptrtask editor, the task remains unchanged and the routine returns an error code. For the predefined error codes, please see "Task Status and Error Reporting".
You must preserve the arrays
ic(internal conditions), and
scoeff(spline coefficients) through the entire workflow of the Data Fitting computations which use those arrays, as the task stores the addresses of the arrays for spline-based computations.