erigon-pulse/consensus/bor/merkle.go
Håvard Anda Estensen 7c15ed59e4
Enable prealloc linter (#5177)
* Enable prealloc linter

* Set inital slice len to 0
2022-08-26 10:04:36 +07:00

49 lines
845 B
Go

package bor
func AppendBytes32(data ...[]byte) []byte {
var result []byte
for _, v := range data {
paddedV, err := ConvertTo32(v)
if err == nil {
result = append(result, paddedV[:]...)
}
}
return result
}
func NextPowerOfTwo(n uint64) uint64 {
if n == 0 {
return 1
}
// http://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
n--
n |= n >> 1
n |= n >> 2
n |= n >> 4
n |= n >> 8
n |= n >> 16
n |= n >> 32
n++
return n
}
func ConvertTo32(input []byte) (output [32]byte, err error) {
l := len(input)
if l > 32 || l == 0 {
return
}
copy(output[32-l:], input)
return
}
func Convert(input [][32]byte) [][]byte {
output := make([][]byte, 0, len(input))
for _, in := range input {
newInput := make([]byte, len(in[:]))
copy(newInput, in[:])
output = append(output, newInput)
}
return output
}