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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
commit | 43a123c1ae6613b3efeed291fa552ecd909d3acf (patch) | |
tree | fd92518b7024bc74031f78a1cf9e454b65e73665 /src/os/str.go | |
parent | Initial commit. (diff) | |
download | golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.tar.xz golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.zip |
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/os/str.go')
-rw-r--r-- | src/os/str.go | 39 |
1 files changed, 39 insertions, 0 deletions
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:]) +} |