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package ar
import "math/big"
const lenops int64 = 9
type OpsFunc func(a, b *big.Int) *big.Int
var ops [lenops]OpsFunc
func init() {
ops[0] = Add
ops[1] = Mul
ops[2] = Mod
ops[3] = Xor
ops[4] = And
ops[5] = Or
ops[6] = Sub1
ops[7] = XorSub
ops[8] = Rsh
}
func Add(x, y *big.Int) *big.Int {
return new(big.Int).Add(x, y)
}
func Mul(x, y *big.Int) *big.Int {
return new(big.Int).Mul(x, y)
}
func Mod(x, y *big.Int) *big.Int {
return new(big.Int).Mod(x, y)
}
func Xor(x, y *big.Int) *big.Int {
return new(big.Int).Xor(x, y)
}
func And(x, y *big.Int) *big.Int {
return new(big.Int).And(x, y)
}
func Or(x, y *big.Int) *big.Int {
return new(big.Int).Or(x, y)
}
func Sub1(x, y *big.Int) *big.Int {
a := big.NewInt(-1)
a.Sub(a, x)
return a
}
func XorSub(x, y *big.Int) *big.Int {
t := Sub1(x, nil)
return t.Xor(t, y)
}
func Rsh(x, y *big.Int) *big.Int {
return new(big.Int).Rsh(x, uint(y.Uint64()%64))
}
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