From ccd992355df7192993c666236047820244914598 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:19:13 +0200 Subject: Adding upstream version 1.21.8. Signed-off-by: Daniel Baumann --- src/os/str.go | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 src/os/str.go (limited to 'src/os/str.go') diff --git a/src/os/str.go b/src/os/str.go new file mode 100644 index 0000000..242c945 --- /dev/null +++ b/src/os/str.go @@ -0,0 +1,39 @@ +// 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 hexadecimal 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 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:]) +} -- cgit v1.2.3