small performance improvment (1%)

mr-tron · Oct 20, 2018 · 89529c6 · 89529c6
1 parent e215a00
commit 89529c6
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/base58.go b/base58.go
@@ -34,14 +34,14 @@ func FastBase58EncodingAlphabet(bin []byte, alphabet *Alphabet) string {
  }
 
  size := (binsz-zcount)*138/100 + 1
- var buf = make([]byte, size)
+ var buf = make([]uint32, size)
 
  high = size - 1
  for i = zcount; i < binsz; i++ {
  j = size - 1
  for carry = uint32(bin[i]); j > high || carry != 0; j-- {
- carry = carry + 256*uint32(buf[j])
- buf[j] = byte(carry % 58)
+ carry += buf[j] << 8
+ buf[j] = carry % 58
  carry /= 58
  }
  high = j