[nyankosensei]

I completely agree that this is a great resource. BTW, the Springer site book link is https://link.springer.com/book/10.1007/978-3-642-14764-7. I’m thankful that the author has made the book and code freely available.

The author also co-authored a book about historical and state-of-the-art pi computations called Pi Unleashed (https://link.springer.com/book/10.1007/978-3-642-56735-3). The code and additional resources are available at https://extras.springer.com/?query=978-3-642-56735-3. Though somewhat dated (circa 2000), there’s a lot of fascinating information in the 229 Mb zip download, including a 133 char C program (pitiny.c) that computes 15000 digits of pi.

[ZeroTalent]

Glad you mentioned Pi Unleashed. That tiny pitiny.c program is legendary in its own right. It really highlights the minimalism—squeezing out every bit of performance and precision.