Calculate integrals for periodic functions
int c_ftcurvpi (float, float, float, int, float [], float [], float *);
int c_ftcurvpi (xl, xr, p, m, xi, yi, integral);
The lower limit of the integration.
The upper limit of the integration.
The period of the function; p must not be less than xi[n-1] - xi[0].
The number of input data points. (N > 1)
An array containing the abscissae for the input function.
An array containing the functional values of the input function (y(k) is the functional value at x(k) for k=0,n).
The integral of the function from xl to xr is given by *integral.
c_ftcurvpi returns an error value as per:
= 0 -- no error.
= 1 -- if n is less than 2.
= 2 -- if the period is strictly less than the span of the abscissae.
c_ftcurvpi is called after all of the desired values for control parameters have been set using the procedures c_ftseti, c_ftsetr, c_ftsetc. Control parameters that apply to c_ftcurvpi are: sig.
To use c_ftcurvpi, load the NCAR Graphics library ngmath.
fitgrid_params, c_ftseti, c_ftsetr, c_ftsetc.
Complete documentation for Fitgrid is available at URL
http://ngwww.ucar.edu/ngdoc/ng/ngmath/fitgrid/fithome.html
Copyright (C) 2000
University Corporation for Atmospheric Research
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