IP_IPSEC_REMOTE_AUTH              = 0x1c
	IP_IPSEC_REMOTE_CRED              = 0x1a
	IP_IPSEC_REMOTE_ID                = 0x18
	IP_MAXPACKET                      = 0xffff
	IP_MAX_MEMBERSHIPS                = 0xfff
	IP_MF                             = 0x2000
	IP_MINTTL                         = 0x20
	IP_MIN_MEMBERSHIPS                = 0xf
	IP_MSS                            = 0x240

						d[3] = 0
					} else if s[3] == 0xff {
						copy(d[:], s[:])
					} else {
						// This code does the same as color.NRGBAModel.Convert(
						// rgba.At(x, y)).(color.NRGBA) but with no extra memory
						// allocations or interface/function call overhead.
						//
						// The multiplier m combines 0x101 (which converts
						// 8-bit color to 16-bit color) and 0xffff (which, when

	}
}

// clamp clamps i to the interval [0, 0xffff].
func clamp(i int32) int32 {
	if i < 0 {
		return 0
	}
	if i > 0xffff {
		return 0xffff
	}
	return i
}

// sqDiff returns the squared-difference of x and y, shifted by 2 so that
// adding four of those won't overflow a uint32.
//
// x and y are both assumed to be in the range [0, 0xffff].
func sqDiff(x, y int32) uint32 {

	},
	{
		str:  "\xDF\xBF",
		wstr: []uint16{0x07FF},
	},

	// 3-byte
	{
		str:  "\xE0\xA0\x80",
		wstr: []uint16{0x0800},
	},
	{
		str:  "\xE2\xB0\xBC",
		wstr: []uint16{0x2C3C},
	},
	{
		str:  "\xEF\xBF\xBF",
		wstr: []uint16{0xFFFF},
	},
	// unmatched surrogate halves
	// high surrogates: 0xD800 to 0xDBFF
	{
		str:  "\xED\xA0\x80",
		wstr: []uint16{0xD800},
	},
	{

	IN_ALL_EVENTS                               = 0xfff
	IN_ATTRIB                                   = 0x4
	IN_CLASSA_HOST                              = 0xffffff
	IN_CLASSA_MAX                               = 0x80
	IN_CLASSA_NET                               = 0xff000000
	IN_CLASSA_NSHIFT                            = 0x18
	IN_CLASSB_HOST                              = 0xffff
	IN_CLASSB_MAX                               = 0x10000

	IN_ACCESS                        = 0x1
	IN_ALL_EVENTS                    = 0xfff
	IN_ATTRIB                        = 0x4
	IN_CLASSA_HOST                   = 0xffffff
	IN_CLASSA_MAX                    = 0x80
	IN_CLASSA_NET                    = 0xff000000
	IN_CLASSA_NSHIFT                 = 0x18
	IN_CLASSB_HOST                   = 0xffff
	IN_CLASSB_MAX                    = 0x10000
	IN_CLASSB_NET                    = 0xffff0000

	IN_ACCESS                        = 0x1
	IN_ALL_EVENTS                    = 0xfff
	IN_ATTRIB                        = 0x4
	IN_CLASSA_HOST                   = 0xffffff
	IN_CLASSA_MAX                    = 0x80
	IN_CLASSA_NET                    = 0xff000000
	IN_CLASSA_NSHIFT                 = 0x18
	IN_CLASSB_HOST                   = 0xffff
	IN_CLASSB_MAX                    = 0x10000
	IN_CLASSB_NET                    = 0xffff0000

	IN_ACCESS                        = 0x1
	IN_ALL_EVENTS                    = 0xfff
	IN_ATTRIB                        = 0x4
	IN_CLASSA_HOST                   = 0xffffff
	IN_CLASSA_MAX                    = 0x80
	IN_CLASSA_NET                    = 0xff000000
	IN_CLASSA_NSHIFT                 = 0x18
	IN_CLASSB_HOST                   = 0xffff
	IN_CLASSB_MAX                    = 0x10000
	IN_CLASSB_NET                    = 0xffff0000

	IN_ACCESS                        = 0x1
	IN_ALL_EVENTS                    = 0xfff
	IN_ATTRIB                        = 0x4
	IN_CLASSA_HOST                   = 0xffffff
	IN_CLASSA_MAX                    = 0x80
	IN_CLASSA_NET                    = 0xff000000
	IN_CLASSA_NSHIFT                 = 0x18
	IN_CLASSB_HOST                   = 0xffff
	IN_CLASSB_MAX                    = 0x10000
	IN_CLASSB_NET                    = 0xffff0000

	IN_CLASSA_HOST                = 0xffffff
	IN_CLASSA_MAX                 = 0x80
	IN_CLASSA_NET                 = 0xff000000
	IN_CLASSA_NSHIFT              = 0x18
	IN_CLASSB_HOST                = 0xffff
	IN_CLASSB_MAX                 = 0x10000
	IN_CLASSB_NET                 = 0xffff0000
	IN_CLASSB_NSHIFT              = 0x10
	IN_CLASSC_HOST                = 0xff
	IN_CLASSC_NET                 = 0xffffff00