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.\"	$Id: c_ftcurvpi.m,v 1.4 2008-07-27 03:35:38 haley Exp $
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.TH c_ftcurvpi 3NCARG "March 1998" UNIX "NCAR GRAPHICS"
.SH NAME
c_ftcurvpi - calculate integrals for periodic functions
.SH FUNCTION PROTOTYPE
int c_ftcurvpi (float, float, float, int, float [], float [], float *);
.SH SYNOPSIS
int c_ftcurvpi (xl, xr, p, m, xi, yi, integral);
.SH DESCRIPTION
.IP xl 12
The lower limit of the integration. 
.IP xr 12
The upper limit of the integration. 
.IP p 12
The period of the function; p must not be less than xi[n-1] - xi[0]. 
.IP m 12
The number of input data points. (N > 1) 
.IP xi 12
An array containing the abscissae for the input function. 
.IP yi 12
An array containing the functional values of the input 
function (y(k) is the functional value at x(k) for k=0,n). 
.IP integral 12
The integral of the function from xl to xr is given by *integral. 
.SH RETURN VALUE
c_ftcurvpi returns an error value as per: 
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.sp
= 0 -- no error.
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= 1 -- if n is less than 2.
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= 2 -- if the period is strictly less than the span of the abscissae. 
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.SH USAGE
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.
.SH ACCESS
To use c_ftcurvpi, load the NCAR Graphics library ngmath.
.SH SEE ALSO
fitgrid_params, c_ftseti, c_ftsetr, c_ftsetc.
.sp
Complete documentation for Fitgrid is available at URL
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http://ngwww.ucar.edu/ngdoc/ng/ngmath/fitgrid/fithome.html
.SH COPYRIGHT
Copyright (C) 2000
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University Corporation for Atmospheric Research
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