forks/go-ethereum
1
0
Fork 1
mirror of https://github.com/ethereum/go-ethereum.git synced 2026-07-26 06:36:43 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Merge 81c76e07dc into c72f5459ac

Browse source
This commit is contained in:
Joubin Houshyar 2016-10-20 08:59:50 +00:00 committed by GitHub
commit 6366c4a1b8
1 changed files with 10 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
common/big.go
View file

@ -116,14 +116,19 @@ func FirstBitSet(v *big.Int) int {
//
// Returns the bytes of a big integer with the size specified by **base**
// Attempts to pad the byte array with zeros.
//
// Note that input arg **num** is expected to be non-nil;
// nil argument will result in runtime panic.
func BigToBytes(num *big.Int, base int) []byte {
ret := make([]byte, base/8)
bytes := num.Bytes()
blen := len(bytes)
bpb := base / 8
if len(num.Bytes()) > base/8 {
return num.Bytes()
if blen > bpb {
return bytes
}
return append(ret[:len(ret)-len(num.Bytes())], num.Bytes()...)
padBuf := make([]byte, bpb)
return append(padBuf[:bpb-blen], bytes...)
}
// Big copy