// bin               red  green   blue  alpha
	// 0x0000-0x0fff:    364    790   7242      0
	// 0x1000-0x1fff:    645   2967   1039      0
	// 0x2000-0x2fff:   1072   2299    979      0
	// 0x3000-0x3fff:    820   2266    980      0
	// 0x4000-0x4fff:    537   1305    541      0
	// 0x5000-0x5fff:    319    962    261      0
	// 0x6000-0x6fff:    322    375    177      0
	// 0x7000-0x7fff:    601    279    214      0

			SetRGBA64(x, y int, c color.RGBA64)
		}:
			tc.SetRGBA64(1, 1, color.RGBA64{0x7FFF, 0x3FFF, 0x0000, 0x7FFF})

		case *NYCbCrA:
			memset(tc.YCbCr.Y, 0x77)
			memset(tc.YCbCr.Cb, 0x88)
			memset(tc.YCbCr.Cr, 0x99)
			memset(tc.A, 0xAA)

		case *Uniform:
			tc.C = color.RGBA64{0x7FFF, 0x3FFF, 0x0000, 0x7FFF}

		case *YCbCr:
			memset(tc.Y, 0x77)
			memset(tc.Cb, 0x88)
			memset(tc.Cr, 0x99)

    static final byte TRANS2_GET_DFS_REFERRAL       = (byte)0x10;
    static final byte TRANS2_SET_FILE_INFORMATION   = (byte)0x08;

    static final int NET_SHARE_ENUM   = 0x0000;
    static final int NET_SERVER_ENUM2 = 0x0068;
    static final int NET_SERVER_ENUM3 = 0x00D7;

    static final byte TRANS_PEEK_NAMED_PIPE     = (byte)0x23;
    static final byte TRANS_WAIT_NAMED_PIPE     = (byte)0x53;

	DNS_TYPE_SOA     = 0x0006
	DNS_TYPE_MB      = 0x0007
	DNS_TYPE_MG      = 0x0008
	DNS_TYPE_MR      = 0x0009
	DNS_TYPE_NULL    = 0x000a
	DNS_TYPE_WKS     = 0x000b
	DNS_TYPE_PTR     = 0x000c
	DNS_TYPE_HINFO   = 0x000d
	DNS_TYPE_MINFO   = 0x000e
	DNS_TYPE_MX      = 0x000f
	DNS_TYPE_TEXT    = 0x0010
	DNS_TYPE_RP      = 0x0011
	DNS_TYPE_AFSDB   = 0x0012
	DNS_TYPE_X25     = 0x0013
	DNS_TYPE_ISDN    = 0x0014

	// 0x80, Cr: 0x80} and c1 := Gray{Y: y} then c0.RGBA() should equal
	// c1.RGBA(). Specifically, if y == 0 then "R = etc >> 8" should yield
	// 0x0000 and if y == 0xff then "R = etc >> 8" should yield 0xffff. If we
	// used a constant rounding adjustment of 1<<15, then it would yield 0x0080
	// and 0xff80 respectively.
	//
	// Note that when cb == 0x80 and cr == 0x80 then the formulae collapse to:
	//	R = YY1 >> n
	//	G = YY1 >> n

		// The following code simulates an additional check for x == xx and
		// handling the ASCII and invalid cases accordingly. This mask-and-or
		// approach prevents an additional branch.
		mask := rune(x) << 31 >> 31 // Create 0x0000 or 0xFFFF.
		return rune(p[0])&^mask | RuneError&mask, 1
	}
	sz := int(x & 7)
	accept := acceptRanges[x>>4]
	if n < sz {
		return RuneError, 1
	}
	b1 := p[1]
	if b1 < accept.lo || accept.hi < b1 {

const (
	DNS_TYPE_A       = 0x0001
	DNS_TYPE_NS      = 0x0002
	DNS_TYPE_MD      = 0x0003
	DNS_TYPE_MF      = 0x0004
	DNS_TYPE_CNAME   = 0x0005
	DNS_TYPE_SOA     = 0x0006
	DNS_TYPE_MB      = 0x0007
	DNS_TYPE_MG      = 0x0008
	DNS_TYPE_MR      = 0x0009
	DNS_TYPE_NULL    = 0x000a
	DNS_TYPE_WKS     = 0x000b
	DNS_TYPE_PTR     = 0x000c
	DNS_TYPE_HINFO   = 0x000d
	DNS_TYPE_MINFO   = 0x000e

	0xd2: 0x000b, 0xd3: 0x000b, 0xd4: 0x000b, 0xd5: 0x000b, 0xd6: 0x000b, 0xd7: 0x000b,
	0xd8: 0x000b, 0xd9: 0x000b, 0xda: 0x000b, 0xdb: 0x000b, 0xdc: 0x000b, 0xdd: 0x000b,
	0xde: 0x000b, 0xdf: 0x000b, 0xe0: 0x0006, 0xe1: 0x000a, 0xe2: 0x0004, 0xe3: 0x0004,
	0xe4: 0x0004, 0xe5: 0x0004, 0xe6: 0x000a, 0xe7: 0x000a, 0xe8: 0x000a, 0xe9: 0x000a,
	0xeb: 0x000a, 0xec: 0x000a, 0xed: 0x000b, 0xee: 0x000a, 0xef: 0x000a,

		opaqueGray       = color.NRGBA{0x99, 0x99, 0x99, 0xff}
		transparentBlue  = color.NRGBA{0x00, 0x00, 0xff, 0x00}
		transparentGreen = color.NRGBA{0x00, 0xff, 0x00, 0x00}
		transparentRed   = color.NRGBA{0xff, 0x00, 0x00, 0x00}

		opaqueGray64        = color.NRGBA64{0x9999, 0x9999, 0x9999, 0xffff}
		transparentPurple64 = color.NRGBA64{0xfedc, 0x0000, 0x7654, 0x0000}
	)

	// dst and src are 1x3 images but the dr rectangle (and hence the overlap)

			// is an error", but some real-world PNG files have out-of-range pixel
			// values. We fall back to opaque black, the same as libpng 1.5.13;
			// ImageMagick 6.5.7 returns an error.
			d.palette[i] = color.RGBA{0x00, 0x00, 0x00, 0xff}
		}
		d.palette = d.palette[:np]
	case cbTC8, cbTCA8, cbTC16, cbTCA16:
		// As per the PNG spec, a PLTE chunk is optional (and for practical purposes,