rounding up decimals rules

Recently was depressed by the round function in R, some say that the rules of the round function are so defined: Refer to Cos Moderator Xiaonan: This rule has a vulgar called "four homes six into five together", also called "Banker rounding", the

As the original text has been introduced very well, now is only a few translations and a small supplement. Example Copy Code code as follows: Demo Format: 9999.99 (range is 0-9999.99) (dynamically modify Alt

Since the original article has already been quite well introduced, it is only some translation and a small supplement. Example CopyCode The Code is as follows: demo Format: 9999.99 (range: 0-9999.99) (dynamically modify the alt attribute):

As for antipattern, you may know that its only function is to avoid reverse pattern during actual development. The main introduction in Baidu encyclopedia is as follows: Recognized anti-pattern in software development Anti-pattern in project

Mid-term summary One, commonly used command summary man-k:Commonly used to search, combined with pipe use. Examples are as follows:Man-k K1 | grep K2 | grep 2The search contains both K1 and K2, and is part of the system call.The last number means

2.4 Floating pointFloating-point numbers make a lot of sense to design very large figures and very close to 0 numbers, but the first floating-point number doesn't have a single standard, and then the IEEE 754 standard comes up, and the standard is

Original link http://blog.csdn.net/oscar999/article/details/16839417Preface Trunc is a shorthand for truncate. The Chinese translation is "truncate" or "truncated". On the surface, it should be a string or a number to intercept. There are actually

the representation and processing of the information in the 2nd Chapter(i), three kinds of important digital representationsUnsigned number: The encoding is based on the traditional binary notation (numbers greater than or equal to zero).Complement:

The representation and processing of the information in the 2nd Chapter(i), three kinds of important digital representationsUnsigned number: The encoding is based on the traditional binary notation (numbers greater than or equal to zero).Complement:

Decimal (numeric) synonymous for precise storage of numeric valuesfloat and real cannot store values accuratelyThe decimal data type can store up to 38 digits, and all numbers can be placed to the right of the decimal point. The decimal data type