return "strconv." + e.Func + ": " + "parsing " + Quote(e.Num) + ": " + e.Err.Error()
}

func (e *NumError) Unwrap() error { return e.Err }

// All ParseXXX functions allow the input string to escape to the error value.
// This hurts strconv.ParseXXX(string(b)) calls where b is []byte since
// the conversion from []byte must allocate a string on the heap.
// If we assume errors are infrequent, then we can avoid escaping the input