What's New - January, 2006
January 28,2006: Charles Doumars, who's hobby is making my code better, has enhanced the TPrimes unit to handle primes up to 18 digits in length and do it rather efficiently both for finding prime factors and testing numbers for "primeness". I've modified Primefactors1 to let you enter and factor the new larger numbers. It identifies the 18 digit number 123,456,789,123,456,773 as prime in just under a minute on my laptop.
January 23, 2006:
Mirror text, Or Both?
January 20, 2006: I finally got around to incorporating some requested enhancements to make Cutlist Version 3.1. Cutlist is a program for woodworkers which takes a list of required parts, a list of supply material, and tries to figure out the best way to cut the required parts from the available material.
January 12, 2006: A viewer recently pointed out to me that the proposed revision to the wind-chill equation had been implemented, apparently shortly after my original positing in early 2001. The new equation is based on enhanced models of the effect of wind of exposed skin and verified by experimental results. A new version of Windchill was posted today which reports results based on both the old and new equations.
January 10, 2006: Charles Doumar has made a few enhancements and fixed a few minor bugs in our large integer integer class, TInteger, in UBigIntsV2 unit and distributed as part of the DFF Library zip file, DFFLIBV04. The more information and the test file for the class can be downloaded from the Big Integers test program page.
January 9, 2006: I posted a new version of the TPrimes class today which has added methods to get the prime factors of a number in canonical form (unique factors and the number of times they occur) as well as a method to return the number of divisors and one to return an array of all divisors of any number up one trillion (1,000,000,000,000). Program Prime Factors 1 now has buttons to test these new methods.
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