> To get vectorization in Go, you have to implement it in C and link that into your Go program. Go has an assembler which does not require implementing anythin

> To get vectorization in Go, you have to implement it in C and link that into your Go program. Go has an assembler which does not require implementing anything in C (though the assembler uses a more C-style syntax), nor critically does it require using CGo linkage. It's used to implement many hot paths in the stdlib.