Reverse Engineering challenge #78.

Tags: MIPS X64 ASM L2 ARM64 ARM .

This algorithm is one of the most popular in everyday programming. The version here is simplified as much as possible, but nevertheless, still has most important features of the real one. Which is...?

Code length varies significantly from compiler to compiler. This is optimizations, but which?

More challenges: challenges.re; about solutions: challenges.re/#Solutions.