All my R packages called C/C++ to implement inner loop to speed up the computation. Details can be found in Softwares.
A tutorial for developing R packages can be found in RPK. It also includes the tutorial for matlab calling C/C++.
R shiny
Calculate large positive integer’s factorial. It takes only 0.45 seconds to compute 10000! (it approximates 2.8E+35660), and 0.98 seconds to compute 10000! and sum=1!+2!+3!+…+10000! simultaneously.
Approximate π with very high precesion. It takes only 0.04 seconds to approximate π with 1,000,000,000 digits. The International Day of Mathematics is March 14 ever year. March 14, 2020 is the first one. More details can be found HERE. An interest video for tutorial to mathematics can be found HERE.
Calculates $\sqrt{n}$ with very high precision, where n is a positive integer. It takes only less than 30 seconds to approximate $\sqrt{n}$ with 100,000 digits.
Calculate the solution of Pell’ equation. More details can be found HERE.
A generator for random numbers. It generates different numbers for different discipline.
