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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:23:18 +0000
commit43a123c1ae6613b3efeed291fa552ecd909d3acf (patch)
treefd92518b7024bc74031f78a1cf9e454b65e73665 /src/os/str.go
parentInitial commit. (diff)
downloadgolang-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.go39
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:])
+}