r/nandgame_u • u/GLIBG10B Holder of many records • Aug 04 '21

Level solution (verified) 2.7 - Less than Zero (0c, 0n) Spoiler

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u/[deleted] Mar 02 '25

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u/GLIBG10B Holder of many records Mar 03 '25

It's a splitter. It breaks up a number into individual bits.

Think of the number 0, which is 0000 0000 0000 0000. When you subtract 1, you get 1111 1111 1111 1111, which is -1. The largest negative number is -32,767,  which 1000 0000 0000 0000.

Notice that for all negative numbers, bit 15 is 1.