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all: add internal/itoa package

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This replaces five implementations scattered across low level packages.
(And I plan to use it in a sixth soon.)
Three of the five were byte-for-byte identical.

Change-Id: I3bbbeeac63723a487986c912b604e10ad1e042f4
Reviewed-on: https://go-review.googlesource.com/c/go/+/301549
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
This commit is contained in:
Josh Bleecher Snyder 2021-03-13 16:52:16 -08:00
parent 88b8a16089
commit 061a6903a2
32 changed files with 143 additions and 181 deletions
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26
src/net/parse.go
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@ -172,32 +172,6 @@ func xtoi2(s string, e byte) (byte, bool) {
return byte(n), ok && ei == 2
}
// Convert integer to decimal string.
func itoa(val int) string {
if val < 0 {
return "-" + uitoa(uint(-val))
}
return uitoa(uint(val))
}
// Convert unsigned integer to decimal string.
func uitoa(val uint) string {
if val == 0 { // avoid string allocation
return "0"
}
var buf [20]byte // big enough for 64bit value base 10
i := len(buf) - 1
for val >= 10 {
q := val / 10
buf[i] = byte('0' + val - q*10)
i--
val = q
}
// val < 10
buf[i] = byte('0' + val)
return string(buf[i:])
}
// Convert i to a hexadecimal string. Leading zeros are not printed.
func appendHex(dst []byte, i uint32) []byte {
if i == 0 {