Sqrt function working in c [duplicate]

题

How does sqrt function really work ? Does it go by any logical theorem to get the result.

Is there any way i can access the code of libarary function such as sqrt?

解决方案

You can download the source code from the libc, which is open source: http://www.gnu.org/software/libc/download.html

许可以下： CC-BY-SA 和归因