How does round work?

4 次查看（过去 30 天）
Tyler Murray
Tyler Murray 2016-11-10
回答： Walter Roberson 2016-11-10
I was trying to figure out how the function round worked. I know the format and everything, I am talking about the actual source code. I tried typing in EDIT round but only instructions came up. The only thing that I can think of is if you have a number like 3.14 you would have to convert that number to a string to determine what character the decimal point is at. From there you can take the number to the right and continue with the appropriate rounding. I just don't understand how MATLAB determines where the decimal is located. Any guesses?

请先登录，再回答此问题。

回答（2 个）

Steven Lord
Steven Lord 2016-11-10
We do not distribute the source code for the built-in round function. If you want to see it you will need to start here.
You may be interested in the general procedures described on Wikipedia.
  1 个评论
Tyler Murray
Tyler Murray 2016-11-10
I'm not asking for a source code, I am just asking people how they think it is programmed. Just curious.

请先登录，再进行评论。

Walter Roberson
Walter Roberson 2016-11-10
Hardware instructions. For example,
http://www.felixcloutier.com/x86/CVTSS2SI.html

类别

在 Help Center 和 File Exchange 中查找有关 Signal Operations 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by