calculator

type Adder interface {
	Add(ctx context.Context, x float64, y float64) (float64, error)
}

type Divider interface {
	Divide(ctx context.Context, x float64, y float64) (float64, error)
}

type MathError struct {
	X       float64
	Y       float64
	Message string
}

type Multiplier interface {
	Multiply(ctx context.Context, x float64, y float64) (float64, error)
}

type Subtracter interface {
	Subtract(ctx context.Context, x float64, y float64) (float64, error)
}