blob: 35643e0d2f1bfa98da184063a52b2e2877f56295 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
// Copyright 2009 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.
// Simple conversions to avoid depending on strconv.
package os
// itox converts val (an int) to a hexdecimal string.
func itox(val int) string {
if val < 0 {
return "-" + uitox(uint(-val))
}
return uitox(uint(val))
}
const hex = "0123456789abcdef"
// uitox converts val (a uint) to a hexdecimal string.
func uitox(val uint) string {
if val == 0 { // avoid string allocation
return "0x0"
}
var buf [20]byte // big enough for 64bit value base 16 + 0x
i := len(buf) - 1
for val >= 16 {
q := val / 16
buf[i] = hex[val%16]
i--
val = q
}
// val < 16
buf[i] = hex[val%16]
i--
buf[i] = 'x'
i--
buf[i] = '0'
return string(buf[i:])
}
|
