Kernighan and Ritchie Libraries

I noticed that the Arduino Programming Language can use a Math.h library. The original Kernighan and Ritchie C Programming Language also contains this library. What other Kernighan and Ritchie libraries are incorporated into the Arduino Programming environment?

Thanx

The Arduino environment includes the AVR port of the standard library.
--Michael

Lymphomaniac1:
I noticed that the Arduino Programming Language can use a Math.h library. The original Kernighan and Ritchie C Programming Language also contains this library. What other Kernighan and Ritchie libraries are incorporated into the Arduino Programming environment?

Thanx

Relatively long time ago there was de facto standard named " ANSI C " , but with "Open" concept the tried and true building blocks of the language - such as stdio.h - are long forgotten. But still there.

Arduino is built on top of avr-gcc, which includes the avr-libc implementation of various standard-ish C libraries, and which is documented here: avr-libc: AVR Libc

Thanks everybody. You got me in the right direction.

Stuart