No additional coefficients are computed on this entry. In your C program, argument ninit must be passed by reference. The interpolating values returned in s are computed using the Newton divided difference coefficients, as defined in the following section. This feature can be used to test for the convergence of the interpolations through a sequence of an increasingly larger set of points. No interpolation is performed.
C contains all undefined values.
This example shows a quadratic polynomial interpolation on a subsequent call with the same data points specified in Example 1, but using a different set of abscissas in T . This example is the same as Example 2 except that it specifies additional data points on the subsequent call to the subroutine. The interpolating polynomial is a degree of 4.