mirror of https://github.com/status-im/op-geth.git
81 lines
1.7 KiB
Go
81 lines
1.7 KiB
Go
package math
|
|
|
|
import (
|
|
"math/big"
|
|
"sort"
|
|
|
|
"github.com/ethereum/go-ethereum/ethutil"
|
|
)
|
|
|
|
type Summer interface {
|
|
Sum(i int) *big.Int
|
|
Len() int
|
|
}
|
|
|
|
func Sum(slice Summer) (sum *big.Int) {
|
|
sum = new(big.Int)
|
|
|
|
for i := 0; i < slice.Len(); i++ {
|
|
sum.Add(sum, slice.Sum(i))
|
|
}
|
|
return
|
|
}
|
|
|
|
type Vector struct {
|
|
Gas, Price *big.Int
|
|
}
|
|
|
|
type VectorsBy func(v1, v2 Vector) bool
|
|
|
|
func (self VectorsBy) Sort(vectors []Vector) {
|
|
bs := vectorSorter{
|
|
vectors: vectors,
|
|
by: self,
|
|
}
|
|
sort.Sort(bs)
|
|
}
|
|
|
|
type vectorSorter struct {
|
|
vectors []Vector
|
|
by func(v1, v2 Vector) bool
|
|
}
|
|
|
|
func (v vectorSorter) Len() int { return len(v.vectors) }
|
|
func (v vectorSorter) Less(i, j int) bool { return v.by(v.vectors[i], v.vectors[j]) }
|
|
func (v vectorSorter) Swap(i, j int) { v.vectors[i], v.vectors[j] = v.vectors[j], v.vectors[i] }
|
|
|
|
func PriceSort(v1, v2 Vector) bool { return v1.Price.Cmp(v2.Price) < 0 }
|
|
func GasSort(v1, v2 Vector) bool { return v1.Gas.Cmp(v2.Gas) < 0 }
|
|
|
|
type vectorSummer struct {
|
|
vectors []Vector
|
|
by func(v Vector) *big.Int
|
|
}
|
|
|
|
type VectorSum func(v Vector) *big.Int
|
|
|
|
func (v VectorSum) Sum(vectors []Vector) *big.Int {
|
|
vs := vectorSummer{
|
|
vectors: vectors,
|
|
by: v,
|
|
}
|
|
return Sum(vs)
|
|
}
|
|
|
|
func (v vectorSummer) Len() int { return len(v.vectors) }
|
|
func (v vectorSummer) Sum(i int) *big.Int { return v.by(v.vectors[i]) }
|
|
|
|
func GasSum(v Vector) *big.Int { return v.Gas }
|
|
|
|
var etherInWei = new(big.Rat).SetInt(ethutil.String2Big("1000000000000000000"))
|
|
|
|
func GasPrice(bp, gl, ep *big.Int) *big.Int {
|
|
BP := new(big.Rat).SetInt(bp)
|
|
GL := new(big.Rat).SetInt(gl)
|
|
EP := new(big.Rat).SetInt(ep)
|
|
GP := new(big.Rat).Quo(BP, GL)
|
|
GP = GP.Quo(GP, EP)
|
|
|
|
return GP.Mul(GP, etherInWei).Num()
|
|
}
|