func tanTrampolineSetup(x float64) float64
func tanAsm(x float64) float64

const haveArchExpm1 = true

func archExpm1(x float64) float64
func expm1TrampolineSetup(x float64) float64
func expm1Asm(x float64) float64

const haveArchPow = true

func archPow(x, y float64) float64
func powTrampolineSetup(x, y float64) float64
func powAsm(x, y float64) float64

const haveArchFrexp = false

//      Expm1(NaN) = NaN
// Very large values overflow to -1 or +Inf.
// The algorithm used is minimax polynomial approximation using a table of
// polynomial coefficients determined with a Remez exchange algorithm.

TEXT	·expm1Asm(SB), NOSPLIT, $0-16
	FMOVD	x+0(FP), F0
	MOVD	$·expm1rodataL22<>+0(SB), R5
	LTDBR	F0, F0
	BLTU	L20
	FMOVD	F0, F2
L2:
	WORD	$0xED205060	//cdb	%f2,.L23-.L22(%r5)
	BYTE	$0x00
	BYTE	$0x19
	BGE	L16
	BVS	L16