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bigint.go
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bigint.go
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package types
import (
"fmt"
"math/big"
big2 "github.com/filecoin-project/go-state-types/big"
)
var EmptyInt = BigInt{}
type BigInt = big2.Int
func NewInt(i uint64) BigInt {
return BigInt{Int: big.NewInt(0).SetUint64(i)}
}
func BigFromBytes(b []byte) BigInt {
i := big.NewInt(0).SetBytes(b)
return BigInt{Int: i}
}
func BigFromString(s string) (BigInt, error) {
v, ok := big.NewInt(0).SetString(s, 10)
if !ok {
return BigInt{}, fmt.Errorf("failed to parse string as a big int")
}
return BigInt{Int: v}, nil
}
func BigMul(a, b BigInt) BigInt {
return BigInt{Int: big.NewInt(0).Mul(a.Int, b.Int)}
}
func BigDiv(a, b BigInt) BigInt {
return BigInt{Int: big.NewInt(0).Div(a.Int, b.Int)}
}
func BigDivFloat(num, den BigInt) float64 {
res, _ := new(big.Rat).SetFrac(num.Int, den.Int).Float64()
return res
}
func BigMod(a, b BigInt) BigInt {
return BigInt{Int: big.NewInt(0).Mod(a.Int, b.Int)}
}
func BigAdd(a, b BigInt) BigInt {
return BigInt{Int: big.NewInt(0).Add(a.Int, b.Int)}
}
func BigSub(a, b BigInt) BigInt {
return BigInt{Int: big.NewInt(0).Sub(a.Int, b.Int)}
}
func BigCmp(a, b BigInt) int {
return a.Int.Cmp(b.Int)
}