They are implemented by computing the arctangent
	after appropriate range reduction.
*/

// Asin returns the arcsine, in radians, of x.
//
// Special cases are:
//
//	Asin(±0) = ±0
//	Asin(x) = NaN if x < -1 or x > 1
func Asin(x float64) float64 {
	if haveArchAsin {
		return archAsin(x)
	}
	return asin(x)
}

func asin(x float64) float64 {
	if x == 0 {
		return x // special case
	}
	sign := false

	w := Log(ct + x2)
	return complex(imag(w), -real(w)) // -i * w
}

// Asinh returns the inverse hyperbolic sine of x.
func Asinh(x complex128) complex128 {
	switch re, im := real(x), imag(x); {
	case im == 0 && math.Abs(re) <= 1:
		return complex(math.Asinh(re), im)
	case re == 0 && math.Abs(im) <= 1:
		return complex(re, math.Asin(im))
	case math.IsInf(re, 0):
		switch {
		case math.IsInf(im, 0):

			t.Errorf("Asin(%g) = %g, want %g", -v.in, f, -v.want)
		}
	}
	for _, pt := range branchPoints {
		if f0, f1 := Asin(pt[0]), Asin(pt[1]); !cVeryclose(f0, f1) {
			t.Errorf("Asin(%g) not continuous, got %g want %g", pt[0], f0, f1)
		}
	}
}
func TestAsinh(t *testing.T) {
	for i := 0; i < len(vc); i++ {
		if f := Asinh(vc[i]); !cSoclose(asinh[i], f, 4e-15) {

var Log10NoVec = log10
var CosNoVec = cos
var CoshNoVec = cosh
var SinNoVec = sin
var SinhNoVec = sinh
var TanhNoVec = tanh
var Log1pNovec = log1p
var AtanhNovec = atanh
var AcosNovec = acos
var AcoshNovec = acosh
var AsinNovec = asin
var AsinhNovec = asinh
var ErfNovec = erf
var ErfcNovec = erfc
var AtanNovec = atan
var Atan2Novec = atan2
var CbrtNovec = cbrt

DATA ·asinrodataL15<> + 208(SB)/8, $1.0
DATA ·asinrodataL15<> + 216(SB)/8, $1.00000000000000000e-20
GLOBL ·asinrodataL15<> + 0(SB), RODATA, $224

// Asin returns the arcsine, in radians, of the argument.
//
// Special cases are:
//      Asin(±0) = ±0=
//      Asin(x) = NaN if x < -1 or x > 1
// The algorithm used is minimax polynomial approximation
// with coefficients determined with a Remez exchange algorithm.

}

TEST_F(CWiseUnaryGradTest, Asin) {
  auto x_fn = [this](const int i) { return RV({0, 0.25, -0.25, -0.5, 0.5}); };
  TestCWiseGrad<float, float>(ASIN, x_fn);
}

TEST_F(CWiseUnaryGradTest, Asin_Complex) {
  auto x_fn = [this](const int i) {
    return CRV({{0.5, 0}, {0, 0.5}, {0.25, -0.75}, {0.5, 0.25}});
  };
  // TODO(kbsriram)
  // Enable test when the asin kernel supports complex numbers

		t.Skipf("no vector support")
	}
	for i := 0; i < len(vf); i++ {
		a := vf[i] / 10
		if f := AsinNovec(a); !veryclose(asin[i], f) {
			t.Errorf("Asin(%g) = %g, want %g", a, f, asin[i])
		}
	}
	for i := 0; i < len(vfasinSC); i++ {
		if f := AsinNovec(vfasinSC[i]); !alike(asinSC[i], f) {
			t.Errorf("Asin(%g) = %g, want %g", vfasinSC[i], f, asinSC[i])
		}
	}
}

func TestAcoshNovec(t *testing.T) {
	if !HasVX {

	// Output: 0.00
}

func ExampleCosh() {
	fmt.Printf("%.2f", math.Cosh(0))
	// Output: 1.00
}

func ExampleSin() {
	fmt.Printf("%.2f", math.Sin(math.Pi))
	// Output: 0.00
}

func ExampleSincos() {
	sin, cos := math.Sincos(0)
	fmt.Printf("%.2f, %.2f", sin, cos)
	// Output: 0.00, 1.00
}

func ExampleSinh() {
	fmt.Printf("%.2f", math.Sinh(0))
	// Output: 0.00
}

func ExampleTan() {

TEXT ·asinTrampolineSetup(SB), NOSPLIT, $0
	MOVB   ·hasVX(SB), R1
	CMPBEQ R1, $1, vectorimpl                // vectorfacility = 1, vector supported
	MOVD   $·asinvectorfacility+0x00(SB), R1
	MOVD   $·asin(SB), R2
	MOVD   R2, 0(R1)
	BR     ·asin(SB)

vectorimpl:
	MOVD $·asinvectorfacility+0x00(SB), R1
	MOVD $·asinAsm(SB), R2
	MOVD R2, 0(R1)
	BR   ·asinAsm(SB)

GLOBL ·asinvectorfacility+0x00(SB), NOPTR, $8

  %0 = "tf.IfRegion"(%arg0) ({
    // Outer Then
    %cond = "tf.LogicalNot"(%arg0) : (tensor<i1>) -> tensor<i1>
    %asin = "tf.Asin"(%arg1) : (tensor<*xf32>) -> tensor<*xf32>

    // nested IfRegion
    %1 = "tf.IfRegion"(%cond) ({
        %2 = "tf.Abs"(%asin) : (tensor<*xf32>) -> tensor<*xf32>
        "tf.Yield"(%2) : (tensor<*xf32>) -> ()
      }, {