func NewFloat64(v float64) *Float64 {
	x := &Float64{}
	if v != _zeroFloat64 {
		x.Store(v)
	}
	return x
}
NewFloat64 creates a new Float64.
package atomic
import (
	"encoding/json"
	"math"
)
type Float64 struct {
	_ nocmp  
	v Uint64
}
var _zeroFloat64 float64