cvaccum	- Accumulate point into data set
	cvacpts - Accumulate points into a data set
	cvcoeff - Get coefficients 
       cvepower - Convert errors to power series equivalents
       cverrors	- Calculate chi-squared and errors in coefficients
	 cveval	- Evaluate curve at x
	  cvfit	- Fit curve
	 cvfree - Free space allocated by cvinit
	 cvinit - Make ready to fit a curve; set up parameters of fit
	cvpower - Convert coefficients to power series coefficients
	cvrefit	- Refit curve, same x and weight, different y
       cvreject	- Reject point from data set
      cvrestore - Restore curve parameters and coefficients
	 cvsave - Save curve parameters and coefficients
	  cvset - Input coefficients derived external to the CURFIT package
	cvsolve	- Solve matrix for coefficients
	cvstati - Get integer parameter
	cvstatr - Get real parameter
       cvvector - Evaluate curve at an array of x
	 cvzero - Zero arrays for new fit