pkg math/big, method (*Float) Int(*Int) (*Int, Accuracy)
pkg math/big, method (*Float) Int64() (int64, Accuracy)
pkg math/big, method (*Float) IsInf() bool
pkg math/big, method (*Float) IsInt() bool
pkg math/big, method (*Float) MantExp(*Float) int
pkg math/big, method (*Float) MinPrec() uint
pkg math/big, method (*Float) Mode() RoundingMode
pkg math/big, method (*Float) Mul(*Float, *Float) *Float

</p>

<pre>
v := x  // x is evaluated exactly once
if v == nil {
	i := v                                 // type of i is type of x (interface{})
	printString("x is nil")
} else if i, isInt := v.(int); isInt {
	printInt(i)                            // type of i is int
} else if i, isFloat64 := v.(float64); isFloat64 {
	printFloat64(i)                        // type of i is float64

pkg math/big, method (*Rat) GobDecode([]uint8) error
pkg math/big, method (*Rat) GobEncode() ([]uint8, error)
pkg math/big, method (*Rat) Inv(*Rat) *Rat
pkg math/big, method (*Rat) IsInt() bool
pkg math/big, method (*Rat) Mul(*Rat, *Rat) *Rat
pkg math/big, method (*Rat) Neg(*Rat) *Rat
pkg math/big, method (*Rat) Num() *Int
pkg math/big, method (*Rat) Quo(*Rat, *Rat) *Rat