Revision history for Math-Utils 1.14 10 Apr 2020 - Add the function softmax(). Currently in the :utility tag group, which may be too generic. We'll see what else gets added later and adjust the tagging then. - New functions uniform_scaling(), and uniform_01scaling(), contributed by Gene Boggs (GENE). - Typo found by Miguel Prz (NICEPERL) fixed. 1.13 30 Oct 2018 - Add function pl_translate(), by request. - Turn README into README.md. With MetaCPAN replacing CPAN, there is no reason to have a plain-text README anymore (MetaCPAN doesn't treat the file as special). - Add a CONTRIBUTING.md file, which is becoming a thing. - New test file for pl_translate(), and upgrade test files that for some reason were still using Test::Simple to Test::More. - Added an :all tag. Why not. 1.12 26 Jun 2018 - Typo found by Florian Schlichting fixed. - Add gcd() and lcm() functions. - New example scripts (a couple transferred over from Math::Polynomial::Solve) in the new eg/ directory. 1.11 11 Aug 2017 - Stupidly depended on Module::Start's boilerplate text for the license, which points to a differently worded license text from what I've got in the LICENSE file. Changed that. 1.10 10 May 2017 - Extended pl_evaluate() to allow lists of values for the X terms. Lists may be of values or of ARRAY refs. - Added tests in 16-evaluate.t for the list cases. 1.09 11 May 2016 - New function fsum(), using Kahan's summation algorithm. - Added tests in 17-derivative-eval.t to check for the linear polynomial and the constant-only polynomial. (They passed, but until now those cases hadn't been tested.) - Extend the documentation for pl_div(), emphasizing the need to remove leading zeros. 1.08 24 Feb 2016 - Inlined the comparison functions of generate_relational(). - Default tolerance was just under square root of (an) epsilon, changed to to just over. - Updated 01-compare.t to test edge cases. - Added a log2() function, because why not. 1.07 23 Nov 2015 - Search using grep.cpan.me indicated that floor() and ceil() functions weren't defined in general-purpose modules (and the modules they were in were pretty heavy-weight). Decided to add them to the module. - Repeated modulus of a number was worth making into utility function moduli(). 1.06 7 Oct 2015 - The if statements were laid out in generate_fltcmp in a way that could return a -1 (less than) when the two values were actually equal within tolerance. Changed this. - Renamed some test files so that the compare test comes first. 1.05 25 Sep 2015 - Bug in pl_derivative() for linear equation case. - Added test cases to cover it. 1.04 20 Sep 2015 - I had bumped the version number everywhere but in the module itself. This will probably complicate something, so fix this everywhere with a version 1.04. - Add a flipsign() function to the :utility list. - More documention clean-up. Mention Math::VecStat in the SEE ALSO. 1.03 18 Sep 2015 - Put :fortran tagged functions copysign() and log10() in the :utility tagging. The :fortran tag sticks around though. - New function pl_dxevaluate() for returning the y, dy, d2y values of the polynomial at x. - New test files for pl_evaluate() and pl_dxevaluate(). 1.02 15 Sep 2015 - Documentation error in pl_div() (mis-named variables in the example). - Extended the SEE ALSO paragraph. - Very minor code clean-up in pl_antiderivative(). 1.01 5 Sep 2015 - I had left test file 15-objcoeff.t off the MANIFEST list. Oops. - Embarrassing number of grammatical and spelling errors fixed. - Clarified a couple of examples, and extended the pl_antiderivative() documentation with respect to the constant term. - Version bump; up to CPAN. 1.00 3 Sep 2015 - Added the coefficient list functions for addition, subtraction, division, multiplication, derivative, antiderivative, and evaluation (via Horner's method) of polynomials without actually creating a polynomial object. - Added the tests for the above operations. 0.02 30 Aug 2015 - CPAN testers caught a 5.10ism in the module, which is listed as okay for version 5.8. Decided to bump the minimum version requirement to 5.10.1. - Documentation was sketchy, so added more descriptive text and examples. - Version bump; up to CPAN. 0.01 18 Aug 2015 - Collection of utility functions for Math modules, starting with the functions of Math-Fortran as a base.