1// Copyright 2009 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// Simple converions to avoid depending on strconv.
6
7package os
8
9// Convert integer to decimal string
10func itoa(val int) string {
11	if val < 0 {
12		return "-" + uitoa(uint(-val))
13	}
14	return uitoa(uint(val))
15}
16
17// Convert unsigned integer to decimal string
18func uitoa(val uint) string {
19	if val == 0 { // avoid string allocation
20		return "0"
21	}
22	var buf [20]byte // big enough for 64bit value base 10
23	i := len(buf) - 1
24	for val >= 10 {
25		q := val / 10
26		buf[i] = byte('0' + val - q*10)
27		i--
28		val = q
29	}
30	// val < 10
31	buf[i] = byte('0' + val)
32	return string(buf[i:])
33}
34