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diff --git a/math/curfit/doc/cvpower.hlp b/math/curfit/doc/cvpower.hlp new file mode 100644 index 00000000..386558ce --- /dev/null +++ b/math/curfit/doc/cvpower.hlp @@ -0,0 +1,40 @@ +.help cvpower Jan86 "Curfit Package" +.ih +NAME +cvpower -- convert coefficients to power series coefficients. +.ih +SYNOPSIS +.nf +include <math/curfit.h> +include "curfitdef.h" + +cvpower (cv, ps_coeff, ncoeff) + +pointer cv # Curve descriptor +real ps_coeff[ncoeff] # Power series coefficients +int ncoeff # Number of coefficients in fit +.fi +.ih +ARGUMENTS +.ls cv +Pointer to the curve descriptor structure. +.le +.ls ps_coeff +The output array of power series coefficients. +.le +.ls ncoeff +The output number of coefficients in the fit. +.le +.ih +DESCRIPTION +This routine routines the equivlalent power series fit coefficients +and the number of coefficients. + +The coefficients of either a legendre or chebyshev solution can be converted +to power series coefficients of the form y = a0 + a1*x + a2*x**2 + a3*x**3... +The output coefficients are scaled to the original data range. +.ih +NOTES +Only legendre and chebyshev coefficients are converted. An error is +reported for other curve types. +.endhelp |