Imported Upstream version 60upstream/60

1 files changed, 57 insertions, 0 deletions

diff --git a/src/pkg/strconv/itoa.go b/src/pkg/strconv/itoa.go
new file mode 100644
index 000000000..a0a749664
--- /dev/null
+++ b/src/pkg/strconv/itoa.go
@@ -0,0 +1,57 @@
+// 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.
+
+package strconv
+
+// Uitob64 returns the string representation of i in the given base.
+func Uitob64(u uint64, base uint) string {
+	if base < 2 || 36 < base {
+		panic("invalid base " + Uitoa(base))
+	}
+	if u == 0 {
+		return "0"
+	}
+
+	// Assemble decimal in reverse order.
+	var buf [64]byte
+	j := len(buf)
+	b := uint64(base)
+	for u > 0 {
+		j--
+		buf[j] = "0123456789abcdefghijklmnopqrstuvwxyz"[u%b]
+		u /= b
+	}
+
+	return string(buf[j:])
+}
+
+// Itob64 returns the string representation of i in the given base.
+func Itob64(i int64, base uint) string {
+	if i == 0 {
+		return "0"
+	}
+
+	if i < 0 {
+		return "-" + Uitob64(-uint64(i), base)
+	}
+	return Uitob64(uint64(i), base)
+}
+
+// Itoa64 returns the decimal string representation of i.
+func Itoa64(i int64) string { return Itob64(i, 10) }
+
+// Uitoa64 returns the decimal string representation of i.
+func Uitoa64(i uint64) string { return Uitob64(i, 10) }
+
+// Uitob returns the string representation of i in the given base.
+func Uitob(i uint, base uint) string { return Uitob64(uint64(i), base) }
+
+// Itob returns the string representation of i in the given base.
+func Itob(i int, base uint) string { return Itob64(int64(i), base) }
+
+// Itoa returns the decimal string representation of i.
+func Itoa(i int) string { return Itob64(int64(i), 10) }
+
+// Uitoa returns the decimal string representation of i.
+func Uitoa(i uint) string { return Uitob64(uint64(i), 10) }