param.go
func (p Param) Float32() (float32, error) {
	f, err := strconv.ParseFloat(string(p), 32)
	return float32(f), err
}
func (p Param) Float32() (float32, error) {
	f, err := strconv.ParseFloat(string(p), 32)
	return float32(f), err
}
// Float32 returns param as float32