FCOMIP F3, F0                           // dff3
	//TODO: FCOMP F2                        // d8da
	//TODO: FCOMP F3                        // d8db
	//TODO: FCOMFP (BX)                     // d81b
	//TODO: FCOMFP (R11)                    // 41d81b
	//TODO: FCOMPL (BX)                     // dc1b
	//TODO: FCOMPL (R11)                    // 41dc1b
	//TODO: FCOMPP                          // ded9

func RegisterDecompressor(method uint16, dcomp Decompressor) {
	if _, dup := decompressors.LoadOrStore(method, dcomp); dup {
		panic("decompressor already registered")
	}
}

// RegisterCompressor registers custom compressors for a specified method ID.
// The common methods [Store] and [Deflate] are built in.
func RegisterCompressor(method uint16, comp Compressor) {

	//TODO VFCMLE $0, V28.S2, V20.S2           // 94dba02e
	//TODO FCMLT $0, F17, F3                   // 23eae05e
	//TODO VFCMLT $0, V8.S4, V7.S4             // 07e9a04e
	FCMPS F3, F17                              // 2022231e
	FCMPS $(0.0), F8                           // 0821201e
	FCMPD F11, F27                             // 60236b1e
	FCMPD $(0.0), F25                          // 2823601e

	VUMIN	V3.H4, V2.H4, V1.H4             // 416c632e
	VUMIN	V3.H8, V2.H8, V1.H8             // 416c636e
	VUMIN	V3.S2, V2.S2, V1.S2             // 416ca32e
	VUMIN	V3.S4, V2.S4, V1.S4             // 416ca36e
	FCCMPS	LT, F1, F2, $1	                // 41b4211e
	FMADDS	F1, F3, F2, F4                  // 440c011f
	FMADDD	F4, F5, F4, F4                  // 8414441f
	FMSUBS	F13, F21, F13, F19              // b3d50d1f

pkg syscall (linux-386), const IN_Q_OVERFLOW ideal-int
pkg syscall (linux-386), const IN_UNMOUNT ideal-int
pkg syscall (linux-386), const IPPROTO_AH ideal-int
pkg syscall (linux-386), const IPPROTO_COMP ideal-int
pkg syscall (linux-386), const IPPROTO_DCCP ideal-int
pkg syscall (linux-386), const IPPROTO_DSTOPTS ideal-int
pkg syscall (linux-386), const IPPROTO_EGP ideal-int

pkg syscall (linux-386), const IN_Q_OVERFLOW = 16384
pkg syscall (linux-386), const IN_UNMOUNT = 8192
pkg syscall (linux-386), const IPPROTO_AH = 51
pkg syscall (linux-386), const IPPROTO_COMP = 108
pkg syscall (linux-386), const IPPROTO_DCCP = 33
pkg syscall (linux-386), const IPPROTO_DSTOPTS = 60
pkg syscall (linux-386), const IPPROTO_EGP = 8
pkg syscall (linux-386), const IPPROTO_ENCAP = 98

pkg syscall (linux-arm-cgo), const IN_Q_OVERFLOW ideal-int
pkg syscall (linux-arm-cgo), const IN_UNMOUNT ideal-int
pkg syscall (linux-arm-cgo), const IPPROTO_AH ideal-int
pkg syscall (linux-arm-cgo), const IPPROTO_COMP ideal-int
pkg syscall (linux-arm-cgo), const IPPROTO_DCCP ideal-int
pkg syscall (linux-arm-cgo), const IPPROTO_DSTOPTS ideal-int
pkg syscall (linux-arm-cgo), const IPPROTO_EGP ideal-int

func (r *Reader) RegisterDecompressor(method uint16, dcomp Decompressor) {
	if r.decompressors == nil {
		r.decompressors = make(map[uint16]Decompressor)
	}
	r.decompressors[method] = dcomp
}

func (r *Reader) decompressor(method uint16) Decompressor {
	dcomp := r.decompressors[method]
	if dcomp == nil {
		dcomp = decompressor(method)
	}
	return dcomp
}

	// of the timezone used for the date fields), many competing extra fields
	// have been invented. Pervasive use effectively makes them "official".
	//
	// See http://mdfs.net/Docs/Comp/Archiving/Zip/ExtraField
	zip64ExtraID       = 0x0001 // Zip64 extended information
	ntfsExtraID        = 0x000a // NTFS
	unixExtraID        = 0x000d // UNIX
	extTimeExtraID     = 0x5455 // Extended timestamp

			zipw:      w.cw,
			compCount: &countWriter{w: w.cw},
			crc32:     crc32.NewIEEE(),
		}
		comp := w.compressor(fh.Method)
		if comp == nil {
			return nil, ErrAlgorithm
		}
		var err error
		fw.comp, err = comp(fw.compCount)
		if err != nil {
			return nil, err
		}
		fw.rawCount = &countWriter{w: fw.comp}
		fw.header = h
		ow = fw
	}
	w.dir = append(w.dir, h)