Where is the manpage of M_PI?

[Peng Yu]

> Not exactly, but you can use
>
> man math.h
>
> if you have the package "libc6-dev" installed.

I don't find `man math.h`. Where is it?

~$ sudo apt-get install libc6-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
libc6-dev is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 9 not upgraded.
~$ man math.h
No manual entry for math.h

-- 
Regards,
Peng