What does (x ^ 0x1) != 0 mean?
The XOR operation (x ^ 0x1) inverts bit 0. So the expression effectively means: if bit 0 of x is 0, or any other bit of x is 1, then the expression is true. Conversely the expression is false if x == 1. So the test is the same as: if (x != 1) and … Read more