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A faster way to calculate the day-of-the-week (www.benjoffe.com)

submitted 4 days ago* (last edited 4 days ago) by inari@piefed.zip to c/programming@programming.dev

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[–] Starfighter@discuss.tchncs.de 14 points 4 days ago* (last edited 4 days ago) (1 children)

The same how a complementary color is the "opposite" color on the color circle. You invert all the bits to go around the number space circle (mathematically called a "field"). Opposed to normal number spaces this one is a circle since overflowing a binary number (ie all bits being 1 and adding one) will reset you back to 0.

[–] underscores@lemmy.zip 6 points 4 days ago

Thanks. that's the answer I was looking for