// than Float values, and each unique Float value requires
// its own unique *Float pointer. To "copy" a Float value,
// an existing (or newly allocated) Float must be set to
// a new value using the [Float.Set] method; shallow copies
// of Floats are not supported and may lead to errors.
type Float struct {
	prec uint32
	mode RoundingMode
	acc  Accuracy
	form form
	neg  bool
	mant nat
	exp  int32
}

   * @param b the second {@code float} to compare
   * @return the result of invoking {@link Float#compare(float, float)}
   */
  public static int compare(float a, float b) {
    return Float.compare(a, b);
  }

  /**
   * Returns {@code true} if {@code value} represents a real number. This is equivalent to, but not
   * necessarily implemented as, {@code !(Float.isInfinite(value) || Float.isNaN(value))}.
   *

   * @param b the second {@code float} to compare
   * @return the result of invoking {@link Float#compare(float, float)}
   */
  public static int compare(float a, float b) {
    return Float.compare(a, b);
  }

  /**
   * Returns {@code true} if {@code value} represents a real number. This is equivalent to, but not
   * necessarily implemented as, {@code !(Float.isInfinite(value) || Float.isNaN(value))}.
   *

	// r must be strictly between f0 and f1, the floats bracketing f.
	f0 := math.Nextafter32(f, float32(math.Inf(-1)))
	f1 := math.Nextafter32(f, float32(math.Inf(+1)))

	// For f to be correct, r must be closer to f than to f0 or f1.
	df := delta(r, float64(f))
	df0 := delta(r, float64(f0))
	df1 := delta(r, float64(f1))
	if df.Cmp(df0) > 0 {
		t.Errorf("Rat(%v).Float32() = %g (%b), but previous float32 %g (%b) is closer", r, f, f, f0, f0)

		{"% 030.20f", "+1e-20", " 00000000.00000000000000000001"},

		// erroneous formats
		{"%s", 1.0, "%!s(*big.Float=1)"},
	} {
		value := new(Float)
		switch v := test.value.(type) {
		case float32:
			value.SetPrec(24).SetFloat64(float64(v))
		case float64:
			value.SetPrec(53).SetFloat64(v)
		case string:
			value.SetPrec(512).Parse(v, 0)
		default:

	}
	return f, n, err
}

// ParseFloat converts the string s to a floating-point number
// with the precision specified by bitSize: 32 for float32, or 64 for float64.
// When bitSize=32, the result still has type float64, but it will be
// convertible to float32 without changing its value.
//
// ParseFloat accepts decimal and hexadecimal floating-point numbers
// as defined by the Go syntax for [floating-point literals].

}

// Float32Val is like [Float64Val] but for float32 instead of float64.
func Float32Val(x Value) (float32, bool) {
	switch x := x.(type) {
	case int64Val:
		f := float32(x)
		return f, int64Val(f) == x
	case intVal:
		f, acc := newFloat().SetInt(x.val).Float32()
		return f, acc == big.Exact
	case ratVal:
		return x.val.Float32()
	case floatVal:
		f, acc := x.val.Float32()
		return f, acc == big.Exact

	du64, du32, du16, du8 := float64(1<<63), float64(1<<31), float64(1<<15), float64(1<<7)
	di64, di32, di16, di8 := float64(-1<<63), float64(-1<<31), float64(-1<<15), float64(-1<<7)
	su64, su32, su16, su8 := float32(1<<63), float32(1<<31), float32(1<<15), float32(1<<7)
	si64, si32, si16, si8 := float32(-1<<63), float32(-1<<31), float32(-1<<15), float32(-1<<7)

	// integer to float
	if float64(u64) != du64 {

}

// floatFromReg loads a float value from its register representation in r.
//
// argSize must be 4 or 8.
func floatFromReg(r *abi.RegArgs, reg int, argSize uintptr, to unsafe.Pointer) {
	switch argSize {
	case 4:
		*(*float32)(to) = archFloat32FromReg(r.Floats[reg])
	case 8:
		*(*float64)(to) = *(*float64)(unsafe.Pointer(&r.Floats[reg]))
	default:
		panic("bad argSize")
	}
}

					dv.Set(sv.Convert(dt))
					return nil
				case reflect.Float32, reflect.Float64:
					dv.Set(sv.Convert(dt))
					return nil
				}
			case reflect.Float32, reflect.Float64:
				switch dt.Kind() {
				case reflect.Float32, reflect.Float64:
					dv.Set(sv.Convert(dt))
					return nil
				}
				if sv.Float() == math.Trunc(sv.Float()) {
					dv.Set(sv.Convert(dt))
					return nil
				}
			}