safemath

func U256Add ¶

func U256Add(result *big.Int, a *big.Int, b *big.Int) (*big.Int, error)

U256IntAdd safe add

func U256Div ¶

func U256Div(result *big.Int, a *big.Int, b *big.Int) (*big.Int, error)

func U256Mod ¶

func U256Mod(result *big.Int, a *big.Int, b *big.Int) (*big.Int, error)

func U256Mul ¶

func U256Mul(result *big.Int, a *big.Int, b *big.Int) (*big.Int, error)

U256Mul safe mul

func U256Sub ¶

func U256Sub(result *big.Int, a *big.Int, b *big.Int) (*big.Int, error)

U256Sub safe sub

func Uint64Add ¶

func Uint64Add(a uint64, b uint64) (uint64, error)

Uint64Add safe add

func Uint64Mul ¶

func Uint64Mul(a uint64, b uint64) (uint64, error)

Uint64Mul safe mul

func Uint64Sub ¶

func Uint64Sub(a uint64, b uint64) (uint64, error)

Uint64Sub safe sub