P2Pool/moneroutil
P2Pool/moneroutil
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Replace QuoRem / Mul with QuoRem64 / Mul64 alternatives

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This commit is contained in:
DataHoarder 2023-05-27 13:59:31 +02:00
parent 7d37dcb5ae
commit 369ce9f705
Signed by: DataHoarder
SSH key fingerprint: SHA256:OLTRf6Fl87G52SiR7sWLGNzlJt4WOX+tfI2yxo0z7xk
1 changed files with 4 additions and 6 deletions
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10
base58.go
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@ -41,16 +41,14 @@ func fastBase58Lookup(c uint8) uint8 {
return 0
}
var base128 = uint128.From64(58)
func encodeChunk(raw []byte, padding int, buf []byte) []byte {
var data [16]byte
copy(data[16-len(raw):], raw)
remainder := uint128.FromBytesBE(data[:])
var current uint128.Uint128
var current uint64
for remainder.Cmp64(0) > 0 {
remainder, current = remainder.QuoRem(base128)
buf = append(buf, BASE58[current.Lo])
remainder, current = remainder.QuoRem64(58)
buf = append(buf, BASE58[current])
}
for len(buf) < padding {
buf = append(buf, '1')
@ -66,7 +64,7 @@ func decodeChunk(buf []byte, encoded string) (result []byte) {
currentMultiplier := uint128.From64(1)
for i := len(encoded) - 1; i >= 0; i-- {
bigResult = bigResult.Add(currentMultiplier.Mul64(uint64(fastBase58Lookup(encoded[i]))))
currentMultiplier = currentMultiplier.Mul(base128)
currentMultiplier = currentMultiplier.Mul64(58)
}
result = make([]byte, 16)
bigResult.ReverseBytes().PutBytes(result)