// 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:]) }