Agena

agena >> `The Power of Procedural Programming` 6.4.6 Catoosa, November 25, 2025 - New `calc.horner` takes a point and a table, sequence, register or numarray of coefficients and evaluates a polynomial via Horner's rule. The coefficients can be given in ascending (default) or descending order of power. - `calc.eta` can now process fractional arguments, using 80-bit floating-proint precision when available for better results. - New `calc.invPsi` approximates the Inverse Psi/Digamma function. - New `mapm.checkxnumber` and `mapm.checkcnumber` check whether all their arguments are MAPM real or complex numbers, respectively and issue an error otherwise. - New `mapm.isxnumber` and `mapm.iscnumber` check whether all their arguments are MAPM real or complex numbers, respectively and return `true` or `false`. - `mapm.xfactorial` has been extended and now returns correct values for positive and negative fractional arbitrary-precision numbers. Contrary to integral values, with fractional numbers the function uses Spouge approximation which produces pretty good results. - New `mapm.xgamma` implements the Gamma function. With fractional values, the return is a Spouge approximation. - New `mapm.xpsi` approximates the Psi/Digamma function. - Added the alias RETURN() to the `maple` package. - Corrected the index of the Agena Reference.