mirror of https://github.com/poanetwork/quorum.git
53 lines
948 B
Go
53 lines
948 B
Go
package ethutil
|
|
|
|
import (
|
|
"math/big"
|
|
)
|
|
|
|
var BigInt0 *big.Int = big.NewInt(0)
|
|
|
|
// True
|
|
var BigTrue *big.Int = big.NewInt(1)
|
|
|
|
// False
|
|
var BigFalse *big.Int = big.NewInt(0)
|
|
|
|
// Returns the power of two integers
|
|
func BigPow(a, b int) *big.Int {
|
|
c := new(big.Int)
|
|
c.Exp(big.NewInt(int64(a)), big.NewInt(int64(b)), big.NewInt(0))
|
|
|
|
return c
|
|
}
|
|
|
|
// Like big.NewInt(uint64); this takes a string instead.
|
|
func Big(num string) *big.Int {
|
|
n := new(big.Int)
|
|
n.SetString(num, 0)
|
|
|
|
return n
|
|
}
|
|
|
|
// Like big.NewInt(uint64); this takes a byte buffer instead.
|
|
func BigD(data []byte) *big.Int {
|
|
n := new(big.Int)
|
|
n.SetBytes(data)
|
|
|
|
return n
|
|
}
|
|
|
|
func BigToBytes(num *big.Int, base int) []byte {
|
|
ret := make([]byte, base/8)
|
|
|
|
return append(ret[:len(ret)-len(num.Bytes())], num.Bytes()...)
|
|
}
|
|
|
|
// Functions like the build in "copy" function
|
|
// but works on big integers
|
|
func BigCopy(src *big.Int) (ret *big.Int) {
|
|
ret = new(big.Int)
|
|
ret.Add(ret, src)
|
|
|
|
return
|
|
}
|