In Part 2, I'll explore the functions more designed for operating on floating point Numbers as opposed to abstract real Numbers.

在第2部分，我将探讨专为操作浮点数(与抽象实数相反)而设计的函数。

youdao

Here in Part 2, I focus on the functions that make sense only when you realize that they're designed for operating on floating-point Numbers instead of abstract real Numbers.

在第2部分中，我主要关注这样一些函数，它们的目的是操作浮点数，而不是抽象实数。

youdao

The difference lies in the fact that floating-point data types used in computers can't hold every real number.

区别在于一个事实：计算机中使用的浮点数据类型无法包含每个实数。

youdao

0 >> David: Yeah, so I very deliberately changed this 9 to a 9.0 so that my math would actually be floating point math involving real numbers and not just integers.

>，大卫：是的，我故意地把9改成9,那样我的数学实际上就是浮点数的了,包括实数，不只是整数。

哈佛公开课 - 计算机科学课程节选