go/src/math/exp.go

// Exp returns e**x, the base-e exponential of x.
//
// Special cases are:
//
//	Exp(+Inf) = +Inf
//	Exp(NaN) = NaN
//
// Very large values overflow to 0 or +Inf.
// Very small values underflow to 1.
func Exp(x float64) float64 { … }

func exp(x float64) float64 { … }

// Exp2 returns 2**x, the base-2 exponential of x.
//
// Special cases are the same as [Exp].
func Exp2(x float64) float64 { … }

func exp2(x float64) float64 { … }

// exp1 returns e**r × 2**k where r = hi - lo and |r| ≤ ln(2)/2.
func expmulti(hi, lo float64, k int) float64 { … }