// All uint64s must be nonzero, or we would have aborted above.
outer:
	for i := 0; i < len(b); i++ {
		x := b[i]

		// Look inside this uint64. We have a pattern like
		// 000000 1xxxxx1 000000
		// We need to look inside the 1xxxxx1 for any contiguous
		// region of zeros.

		// We already know the trailing zeros are no larger than max. Remove them.
		x >>= sys.TrailingZeros64(x) & 63

>>> Flow 1 (client to server)
00000000  16 03 01 00 fe 01 00 00  fa 03 03 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  00 00 00 20 00 00 00 00  |........... ....|
00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000040  00 00 00 00 00 00 00 00  00 00 00 00 00 32 cc a9  |.............2..|

>>> Flow 1 (client to server)
00000000  16 03 01 00 fe 01 00 00  fa 03 03 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  00 00 00 20 00 00 00 00  |........... ....|
00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000040  00 00 00 00 00 00 00 00  00 00 00 00 00 32 cc a9  |.............2..|

				i++
			} else {
				newSorted[o] = edges[j]
				j++
			}
		}
		d.sorted = newSorted
	}

	// Traverse edges in order computing a cumulative sum.
	csum, rate, prevX := 0.0, 0.0, 0.0
	for _, e := range d.sorted {
		newCsum := csum + (e.x-prevX)*rate
		if newCsum >= y {
			// y was exceeded between the previous edge
			// and this one.
			if rate == 0 {
				// Anywhere between prevX and

00000040  27 98 be 4b 88 93 45 0e  78 ba d8 13 c0 2f 00 00  |'..K..E.x..../..|
00000050  11 ff 01 00 01 00 00 0b  00 04 03 00 01 02 00 17  |................|
00000060  00 00 16 03 03 02 59 0b  00 02 55 00 02 52 00 02  |......Y...U..R..|
00000070  4f 30 82 02 4b 30 82 01  b4 a0 03 02 01 02 02 09  |O0..K0..........|
00000080  00 e8 f0 9d 3f e2 5b ea  a6 30 0d 06 09 2a 86 48  |....?.[..0...*.H|
00000090  86 f7 0d 01 01 0b 05 00  30 1f 31 0b 30 09 06 03  |........0.1.0...|

00000040  2f 6e 29 d8 08 61 0b 9d  cc 7d 64 6a 00 9c 00 00  |/n)..a...}dj....|
00000050  09 ff 01 00 01 00 00 17  00 00 16 03 03 02 59 0b  |..............Y.|
00000060  00 02 55 00 02 52 00 02  4f 30 82 02 4b 30 82 01  |..U..R..O0..K0..|
00000070  b4 a0 03 02 01 02 02 09  00 e8 f0 9d 3f e2 5b ea  |............?.[.|
00000080  a6 30 0d 06 09 2a 86 48  86 f7 0d 01 01 0b 05 00  |.0...*.H........|

00000040  b4 ef 39 d2 ee 3b a3 88  85 c5 78 9a cc a8 00 00  |..9..;....x.....|
00000050  11 ff 01 00 01 00 00 0b  00 04 03 00 01 02 00 17  |................|
00000060  00 00 16 03 03 02 59 0b  00 02 55 00 02 52 00 02  |......Y...U..R..|
00000070  4f 30 82 02 4b 30 82 01  b4 a0 03 02 01 02 02 09  |O0..K0..........|
00000080  00 e8 f0 9d 3f e2 5b ea  a6 30 0d 06 09 2a 86 48  |....?.[..0...*.H|
00000090  86 f7 0d 01 01 0b 05 00  30 1f 31 0b 30 09 06 03  |........0.1.0...|

00000040  06 87 54 2c 20 3d 65 b9  1c 93 fd a3 00 9d 00 00  |..T, =e.........|
00000050  09 ff 01 00 01 00 00 17  00 00 16 03 03 02 59 0b  |..............Y.|
00000060  00 02 55 00 02 52 00 02  4f 30 82 02 4b 30 82 01  |..U..R..O0..K0..|
00000070  b4 a0 03 02 01 02 02 09  00 e8 f0 9d 3f e2 5b ea  |............?.[.|
00000080  a6 30 0d 06 09 2a 86 48  86 f7 0d 01 01 0b 05 00  |.0...*.H........|

00000040  7c 0a 09 1c 71 41 07 04  24 dc e7 27 cc a8 00 00  ||...qA..$..'....|
00000050  11 ff 01 00 01 00 00 0b  00 04 03 00 01 02 00 17  |................|
00000060  00 00 16 03 03 02 59 0b  00 02 55 00 02 52 00 02  |......Y...U..R..|
00000070  4f 30 82 02 4b 30 82 01  b4 a0 03 02 01 02 02 09  |O0..K0..........|
00000080  00 e8 f0 9d 3f e2 5b ea  a6 30 0d 06 09 2a 86 48  |....?.[..0...*.H|
00000090  86 f7 0d 01 01 0b 05 00  30 1f 31 0b 30 09 06 03  |........0.1.0...|

>>> Flow 1 (client to server)
00000000  16 03 01 00 fe 01 00 00  fa 03 03 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  00 00 00 20 00 00 00 00  |........... ....|
00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000040  00 00 00 00 00 00 00 00  00 00 00 00 00 32 cc a9  |.............2..|