Pi Calculator

This is a multi-threaded Rust program that calculates the first n digits of Pi using the Bailey–Borwein–Plouffe (BBP) formula. It uses arbitrary-precision arithmetic to ensure the accuracy of the calculated digits.

Features

• Calculates the first n digits of Pi.
• Multi-threaded to speed up the calculation.
• Configurable number of threads.
• Uses the BBP algorithm.
• High-precision calculation using the rug crate.

Building

To build the program, you need to have Rust and Cargo installed. You can install them from https://rustup.rs/.

Once you have Rust and Cargo installed, you can build the program with the following command:

cargo build --release

Usage

To run the program, you can use the following command:

./target/release/pi <N> [OPTIONS]

Arguments

• <N>: The number of digits of Pi to calculate.

Options

• -t, --threads <THREADS>: The number of threads to use. Defaults to 4.
• -h, --help: Print help information.
• -V, --version: Print version information.

Example

To calculate the first 1000 digits of Pi using 8 threads, you can run the following command:

./target/release/pi 1000 -t 8