n := 0
	for i := 0; i < len(s); i++ {
		if bytealg.IndexByteString(t, s[i]) >= 0 {
			n++
		}
	}
	return n
}

// Split s at any bytes in t.
func splitAtBytes(s string, t string) []string {
	a := make([]string, 1+countAnyByte(s, t))
	n := 0
	last := 0
	for i := 0; i < len(s); i++ {
		if bytealg.IndexByteString(t, s[i]) >= 0 {
			if last < i {
				a[n] = s[last:i]
				n++
			}

	} else {
		host = hostport[:i]
		if bytealg.IndexByteString(host, ':') >= 0 {
			return addrErr(hostport, tooManyColons)
		}
	}
	if bytealg.IndexByteString(hostport[j:], '[') >= 0 {
		return addrErr(hostport, "unexpected '[' in address")
	}
	if bytealg.IndexByteString(hostport[k:], ']') >= 0 {
		return addrErr(hostport, "unexpected ']' in address")
	}

func IsPathSeparator(c uint8) bool {
	return Separator == c
}

func isLocal(path string) bool {
	return unixIsLocal(path)
}

func localize(path string) (string, error) {
	if path[0] == '#' || bytealg.IndexByteString(path, 0) >= 0 {
		return "", errInvalidPath
	}
	return path, nil
}

// IsAbs reports whether the path is absolute.
func IsAbs(path string) bool {

	ADDV	$-1, R4

	PCALIGN	$16
loop:
	ADDV	$1, R4
	BEQ	R4, R5, notfound
	MOVBU	(R4), R8
	BNE	R7, R8, loop

	SUBV	R6, R4		// remove base
	RET

notfound:
	MOVV	$-1, R4
	RET

TEXT ·IndexByteString<ABIInternal>(SB),NOSPLIT,$0-32
	// R4 = s_base
	// R5 = s_len
	// R6 = byte to find
	MOVV	R4, R7		// store base for later
	ADDV	R4, R5		// end
	ADDV	$-1, R4

	PCALIGN	$16
loop:
	ADDV	$1, R4

)

func IsPathSeparator(c uint8) bool {
	return Separator == c
}

func isLocal(path string) bool {
	return unixIsLocal(path)
}

func localize(path string) (string, error) {
	if bytealg.IndexByteString(path, 0) >= 0 {
		return "", errInvalidPath
	}
	return path, nil
}

// IsAbs reports whether the path is absolute.
func IsAbs(path string) bool {
	return stringslite.HasPrefix(path, "/")
}

}

func HasSuffix(s, suffix string) bool {
	return len(s) >= len(suffix) && s[len(s)-len(suffix):] == suffix
}

func IndexByte(s string, c byte) int {
	return bytealg.IndexByteString(s, c)
}

func Index(s, substr string) int {
	n := len(substr)
	switch {
	case n == 0:
		return 0
	case n == 1:
		return IndexByte(s, substr[0])
	case n == len(s):
		if substr == s {
			return 0

		conf.search = dnsDefaultSearch()
	}
	return conf
}

func dnsDefaultSearch() []string {
	hn, err := getHostname()
	if err != nil {
		// best effort
		return nil
	}
	if i := bytealg.IndexByteString(hn, '.'); i >= 0 && i < len(hn)-1 {
		return []string{ensureRooted(hn[i+1:])}
	}
	return nil
}

func ensureRooted(s string) string {
	if len(s) > 0 && s[len(s)-1] == '.' {
		return s
	}

// It's hard to tell so we settle on the heuristic that names without dots
// (like "localhost" or "myhost") do not get trailing dots, but any other
// names do.
func absDomainName(s string) string {
	if bytealg.IndexByteString(s, '.') != -1 && s[len(s)-1] != '.' {
		s += "."
	}
	return s
}

// An SRV represents a single DNS SRV record.
type SRV struct {
	Target   string
	Port     uint16
	Priority uint16

		switch path[i] {
		case ':', '\\', 0:
			return "", errInvalidPath
		}
	}
	containsSlash := false
	for p := path; p != ""; {
		// Find the next path element.
		var element string
		i := bytealg.IndexByteString(p, '/')
		if i < 0 {
			element = p
			p = ""
		} else {
			containsSlash = true
			element = p[:i]
			p = p[i+1:]
		}
		if isReservedName(element) {
			return "", errInvalidPath
		}
	}