Provided by: libncarg-dev_6.3.0-6build1_amd64

**NAME**

c_ftcurvi - calculate integrals

**FUNCTION** **PROTOTYPE**

int c_ftcurvi (float, float, int, float [], float [], float *);

**SYNOPSIS**

int c_ftcurvi (xl, xr, n, xi, yi, integral);

**DESCRIPTION**

xl The lower limit of the integration. xr The upper limit of the integration. n The number of input data points. (N > 1) xi An array containing the abscissae for the input function. yi An array containing the functional values of the input function (y(k) is the functional value at x(k) for k=0,n). integral The integral of the function from xl to xr is given by *integral.

**RETURN** **VALUE**

c_ftcurvi returns an error value as per: = 0 -- no error. = 1 -- if n is less than 2. = 2 -- if X values are not strictly increasing.

**USAGE**

c_ftcurvi 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_ftcurvi are: sig, sl1, sln, sf1.

**ACCESS**

To use c_ftcurvi, load the NCAR Graphics library ngmath.

**SEE** **ALSO**

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**

Copyright (C) 2000 University Corporation for Atmospheric Research The use of this Software is governed by a License Agreement.