Function below

json/string.go:66–68

below return a mask that can be used to determine if any of the bytes in `n` are below `b`. If a byte's MSB is set in the mask then that byte was below `b`. The result is only valid if `b`, and each byte in `n`, is below 0x80.

(n uint64, b byte)

// below `b`. The result is only valid if `b`, and each byte in `n`, is below
// 0x80.
func below(n uint64, b byte) uint64 {
	return n - expand(b)
}

// contains returns a mask that can be used to determine if any of the
// bytes in `n` are equal to `b`. If a byte's MSB is set in the mask then