README.md

In xliusufe/PI: Approximate Pi with very high-precesion

PI

R package "PI" approximates pi with very high-precesion. It takes only 0.04 seconds to approximate pi with 1,000,000,000 digits.

Installation

#install.packages("devtools")
library(devtools)
install_github("xliusufe/PI")

• Problems for installation

• [x] For Windows OS

  • The current version only supports R i386 instead of R x64 for windows OS user.

  • If you can not install by using "install_github(xliusufe/PI)", you can clone or download the zipped file, and rebuild the unzipped raw package "PI" locally. Open cmd and type

    R CMD build PI
    

  • If "Error in inDL(x,as.logical(local),as.logical(now),....): ...." comes after installed successfully, refer to the next comment

  • If other problems still exist, setwd to the sub-directory "inst/tests" of PI, and run Pi.R
  • Try to upgrade R version to (>=) R-3.5.3

• [x] For Mac OS

  • It supports R x64 for Mac OS/Linux OS user.
  • If problems come, please refer to corresponding solution to "For Windows OS"

Usage

• [x] PI-manual.pdf ------------------ Details of the usage of the package.

• [x] PI.md ------------------------- The approximation of pi with 10000 digits.

• [x] Web-based calculator --------- A web-based calculator

Example

library(PI)

pi <- Pi(1000)
print(pi,quote=FALSE)

Development

This R package is developed by Xu Liu ([e-mail]).

xliusufe/PI documentation built on June 1, 2019, 6:08 p.m.