pub const FUNC_ALIGN: u32 = 16;Expand description
What a function is aligned to when nothing asked for more.
Sixteen because that is what every x86-64 toolchain puts a function at, and because it is what keeps the loop inside one from straddling one more cache line than it has to. Here rather than beside the assembler because the assembler pads to it and the writer records it, and two copies of one number is how the padding and the record come apart.