b.Run(fmt.Sprintf("%d", j), func(b *testing.B) {
					b.ReportAllocs()
					b.SetBytes(int64(j))
					data := sd.data[:j]
					for i := 0; i < b.N; i++ {
						Fields(data)
					}
				})
			}
		})
	}
}

func BenchmarkFieldsFunc(b *testing.B) {
	for _, sd := range bytesdata {
		b.Run(sd.name, func(b *testing.B) {
			for j := 1 << 4; j <= 1<<20; j <<= 4 {