return p, errors.New("overflowing coordinate")
	}
	// Encode the coordinates and let SetBytes reject invalid points.
	byteLen := (curve.params.BitSize + 7) / 8
	buf := make([]byte, 1+2*byteLen)
	buf[0] = 4 // uncompressed point
	x.FillBytes(buf[1 : 1+byteLen])
	y.FillBytes(buf[1+byteLen : 1+2*byteLen])
	return curve.newPoint().SetBytes(buf)
}

func (curve *nistCurve[Point]) pointToAffine(p Point) (x, y *big.Int) {

}

func _[S ~string | ~[]byte](s S) {
	var buf []byte
	_ = append(buf, s...)
}

// test case from issue

type byteseq interface {
	string | []byte
}

// This should allow to eliminate the two functions above.
func AppendByteString[source byteseq](buf []byte, s source) []byte {
	return append(buf, s[1:6]...)

		tests: []testFnc{
			testHeader{Header{
				Typeflag: TypeReg,
				Name:     "small.txt",
				Size:     5,
				Mode:     0640,
				Uid:      73025,
				Gid:      5000,
				Uname:    "dsymonds",
				Gname:    "eng",
				ModTime:  time.Unix(1246508266, 0),
			}, nil},
			testWrite{"Kilts", 5, nil},

			testHeader{Header{
				Typeflag: TypeReg,
				Name:     "small2.txt",
				Size:     11,

	} 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")
	}

		if len(line) == 0 {
			continue
		}
		colon := bytealg.IndexByteString(line, ':')
		if colon == -1 {
			conf.err = errors.New("no colon on line")
			return conf
		}
		db := trimSpace(line[:colon])
		srcs := line[colon+1:]
		for {
			srcs = trimSpace(srcs)
			if len(srcs) == 0 {
				break
			}
			sp := bytealg.IndexByteString(srcs, ' ')
			var src string
			if sp == -1 {

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build unix || windows

package net

import (
	"internal/bytealg"
	"runtime"
	"syscall"
)

// Boolean to int.
func boolint(b bool) int {
	if b {
		return 1
	}
	return 0
}

func interfaceToIPv4Addr(ifi *Interface) (IP, error) {
	if ifi == nil {

// license that can be found in the LICENSE file.

//go:build 386 || (amd64 && !plan9) || s390x || arm || arm64 || loong64 || ppc64 || ppc64le || mips || mipsle || mips64 || mips64le || riscv64 || wasm

package bytealg

//go:noescape
func IndexByte(b []byte, c byte) int

//go:noescape

// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package filepathlite

import (
	"internal/bytealg"
	"internal/stringslite"
)

const (
	Separator     = '/'    // OS-specific path separator
	ListSeparator = '\000' // OS-specific path list separator
)

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

	"runtime/msan",
	"runtime/asan",
	// We omit bytealg even though it's imported by runtime because it also
	// backs a lot of package bytes. Currently we don't have a way to omit race
	// instrumentation when used from the runtime while keeping race
	// instrumentation when used from user code. Somehow this doesn't seem to
	// cause problems, though we may be skating on thin ice. See #61204.
	"-internal/bytealg",
}

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build unix || (js && wasm) || wasip1

package filepathlite

import (
	"internal/bytealg"
	"internal/stringslite"
)

const (
	Separator     = '/' // OS-specific path separator
	ListSeparator = ':' // OS-specific path list separator
)

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