}

  float RV(const std::vector<float>& v) {
    return v[random::New64() % v.size()];
  }

  complex64 CRV(const std::vector<complex64>& v) {
    return v[random::New64() % v.size()];
  }

  complex64 conjugate(const complex64& val) {
    return complex64(val.real(), -val.imag());
  }

  Scope scope_;
};

TEST_F(CWiseUnaryGradTest, Abs) {

)

const (
	_ complex64 = - /* ERROR "overflow" */ (maxFloat32 + delta32)
	_ complex64 = -maxFloat32
	_ complex64 = maxFloat32
	_ complex64 = maxFloat32 /* ERROR "overflow" */ + delta32

	_ = complex64(- /* ERROR "cannot convert" */ (maxFloat32 + delta32))
	_ = complex64(-maxFloat32)
	_ = complex64(maxFloat32)
	_ = complex64(maxFloat32 /* ERROR "cannot convert" */ + delta32)
)

		_ = 1<<1075 /* ERROR "invalid shift" */
		_ = 2.0<<1
		_ = 1<<1.0
		_ = 1<<(1+0i)

		_ int = 2<<s
		_ float32 = 2<<s
		_ complex64 = 2<<s

		_ int = 2.0<<s
		_ float32 = 2.0<<s
		_ complex64 = 2.0<<s

		_ int = 'a'<<s
		_ float32 = 'a'<<s
		_ complex64 = 'a'<<s
	)
}

func shifts1() {
	// basic non-constant shifts
	var (
		i int
		u uint

		_ = 1<<0
		_ = 1<<i
		_ = 1<<u

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

// #include <complex.h>
import "C"

//export exportComplex64
func exportComplex64(v complex64) complex64 {
	return v
}

//export exportComplex128
func exportComplex128(v complex128) complex128 {
	return v
}

//export exportComplexfloat
func exportComplexfloat(v C.complexfloat) C.complexfloat {

///
/// if y = Square(x), where x (and so y) are DT_COMPLEX64,
/// <X_T, Y_T, JAC_T> should be <complex64, complex64, float>
/// Note that JAC_T is always real-valued, and should be an appropriate
/// precision to host the partial derivatives for dy/dx
///
/// if y = ComplexAbs(x) where x is DT_COMPLEX64 (so y is DT_FLOAT)
/// <X_T, Y_T, JAC_T> should be <complex64, float, float>
///
/// if y = Complex(x, x) where x is DT_FLOAT (so y is DT_COMPLEX64)

	{"imag", `var c complex64; _ = imag(c)`, `func(complex64) float32`},
	{"imag", `var c complex128; _ = imag(c)`, `func(complex128) float64`},
	{"imag", `type C64 complex64; var c C64; _ = imag(c)`, `func(p.C64) float32`},
	{"imag", `type C128 complex128; var c C128; _ = imag(c)`, `func(p.C128) float64`},

	{"real", `_ = real(1i)`, `invalid type`}, // constant
	{"real", `var c complex64; _ = real(c)`, `func(complex64) float32`},

	{"imag", `var c complex64; _ = imag(c)`, `func(complex64) float32`},
	{"imag", `var c complex128; _ = imag(c)`, `func(complex128) float64`},
	{"imag", `type C64 complex64; var c C64; _ = imag(c)`, `func(p.C64) float32`},
	{"imag", `type C128 complex128; var c C128; _ = imag(c)`, `func(p.C128) float64`},

	{"real", `_ = real(1i)`, `invalid type`}, // constant
	{"real", `var c complex64; _ = real(c)`, `func(complex64) float32`},

	t6 byte = array[t1]
	t7 byte = array[x /* ERROR "must be integer" */]
	t8 *int = & /* ERRORx `cannot use .* variable declaration` */ a
	t10 *int = &42 /* ERROR "cannot take address" */
	t11 *complex64 = &v
	t12 complex64 = -(u + *t11) / *&v
	t13 int = a /* ERROR "shifted operand" */ << d
	t14 int = i << j
	t15 math /* ERROR "math is not a type" */
	t16 math.xxx /* ERROR "undefined" */
	t17 math /* ERROR "not a type" */ .Pi

// It rounds the result assuming that the original was obtained from a complex
// value of bitSize bits, which must be 64 for complex64 and 128 for complex128.
func FormatComplex(c complex128, fmt byte, prec, bitSize int) string {
	if bitSize != 64 && bitSize != 128 {
		panic("invalid bitSize")
	}
	bitSize >>= 1 // complex64 uses float32 internally

	// Check if imaginary part has a sign. If not, add one.

		}
	}
	return err, nil
}

// ParseComplex converts the string s to a complex number
// with the precision specified by bitSize: 64 for complex64, or 128 for complex128.
// When bitSize=64, the result still has type complex128, but it will be
// convertible to complex64 without changing its value.
//
// The number represented by s must be of the form N, Ni, or N±Ni, where N stands