Standard Library procedure that evaluates a function that is a sum of a Gaussian and a second order polynomial.

x—The values of the independent variable.

parms—The parameters of equation described in the Discussion section.

funcval—The value of function described in the Discussion section, at each x(i).

pder—(optional) An N_ELEMENT(x)-by-6 array containing the partial derivatives of the function. The parameter pder(i, j) is equal to the derivative at the ith point with respect to the jth parameter.

None.

The FUNCT procedure is used primarily by the CURVEFIT function to fit the sum of a line and a varying background to actual data. The function to be evaluated is:

CURVEFIT