A letter from Nov 03, 2025

Dear FutureMe, any progress with loader's number and FOST? currently understand 9 << 9 #define Z (9<<(9<< #define Y Z Z Z Z Z Z Z Z #define Q Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y next function no understand: P(y,x) It outputs a number that in binary would be represented as 1000...0 where the number of 0s after the 1 is equal to x. Notice that you can deduce both x and y by looking at the value of P(x,y). In loader.c the function is used to create a tree with y denoting the left subtree and x denoting the right subtree. It's defined as y - ~y << x, which is just (2*y+1)*2^x. The functions Z(x) and L(x) help extract the right and left subtrees from a tree x.