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// Copyright 2021 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 itoa
// Itoa converts val to a decimal string.
func Itoa(val int) string {
if val < 0 {
return "-" + Uitoa(uint(-val))
}
return Uitoa(uint(val))
}
// Uitoa converts val to a decimal string.
func Uitoa(val uint) string {
if val == 0 { // avoid string allocation
return "0"
}
var buf [20]byte // big enough for 64bit value base 10
i := len(buf) - 1
for val >= 10 {
q := val / 10
buf[i] = byte('0' + val - q*10)
i--
val = q
}
// val < 10
buf[i] = byte('0' + val)
return string(buf[i:])
}
const hex = "0123456789abcdef"
// Uitox converts val (a uint) to a hexadecimal 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:])
}