A faster way to calculate the Day of the Week
A range of fast modulus techniques that beat compiler output
BenJoffe.com
Latest posts
The fastest "Is Leap Year" functions
Showcasing techniques from various algorithm designers
A Very Fast 64–Bit Date Algorithm: 30-40% faster
The first date algorithm to use only 4 multiplications, instead of 7+
A New Faster Overflow–Safe Date Algorithm
12-17% faster than previous algorithms, supporting the full 32–bit input range.
A New Faster Algorithm for Gregorian Date Conversion
...how "Century-February-Padding" beats traditional year slicing.
The Smoital System — A method of timekeeping on Mars based on UTC
A paper outlining a simple timekeeping system suitable for initial civil use on Mars. he system specifies nearly all Martian calendar days as exactly 24 hours and 40 minutes in length (Earth units), closely matching the true Martian solar day, with the exception of 6 or 7 intercalary days per Martian year, which are defined as only 24 hours long.
New YouTube Channel - Data Visualisations
The first in a series of Speedrunning Champion history videos! This time: Chronicling the players of Goldeneye 007 for Nintendo 64, spanning from 1997 to 2018 (present).
New Space Game in development - Screenshots
Here are some early screenshots of a game I've been working on. A scale model of our Solar System, with real 'Keplerian' orbital mechanics. Your task is to spread your wealth and influence throughout local space, and eventually head for the stars...
Perfect Poker Coin Tosses
We often speak of coin tosses in poker, where two players are all in with hands that have a roughly equal chance of winning. A classic example is AKs v QQ, here the queens actually have a slight edge against the over-cards, with almost 54% equity. I was wondering if there are any perfect coin tosses in Hold'em, where the players are exactly 50-50...
Pocket Odds for iPhone released
I finally got my iPhone version of Pocket Odds up in the store (actually it's been out for almost 2 weeks, but wanted to get version 1.1 out which fixed a few problems before announcing it)....
PocketOdds.com Launched
About a year ago I started working on a poker odds calculator, improving it every few months, it had been sitting in a 95% complete state for quite some time now. Today I finally finished off the last little graphical bugs and uploaded it to a new domain...
Omaha Ice Cold Decks
Last year I published some magic decks for Texas Hold"em Poker, today I had a crack at finding similar decks for Omaha Poker...
Torus Upgrade
Nearly four years since I made Torus I've decided to give the little game an upgrade. Many of the new effects were not possible back then when canvas implementations were new and slow.
Hold'em Ice Cold Decks
I was wondering if it is possible to stack a deck so that no matter which way it is cut, the winning hand is always dealt to the dealer. This would be fun to use as a magic trick, to be able to consistently predict the winning hand. I was skeptical at first, but after running a hastily written script for about half an hour I found such a deck for 2 player heads up...