Mathematical Constants

Explore the mathematical constants introduced in C++20 within the std::numbers namespace. Understand how to use constants like pi, e, and others for float, double, and long double types, enhancing precision in arithmetic computations.

We'll cover the following...

First of all, the constants require the header <numbers> and the namespace std::numbers. The following table gives you an overview.

Mathematical constant	Description
`std::numbers::e`	$e$
`std::numbers::log2e`	$log$ ₂ $e$
`std::numbers::log10e`	$log$ ₁₀

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1.Introduction

2.About C++

3.A Quick Overview of C++20

4.Concepts

5.Modules

6.Three-way Comparison Operator

7.Designated Initialization

8.New Keywords: consteval and constinit

9.Template Improvements

10.Lambda Improvements

11.New Attributes in C++20

12.Further Improvements in Core Language

13.The ranges Library

14.std::span

15.Container Improvements

16.Arithmetic Utilities

17.Calendar and Time Zones

18.Formatting Library

19.Further Improvements in Standard Library

20.Coroutines

21.Atomics

22.Semaphores

23.Latches and Barriers

24.Cooperative Interruption

25.std::jthread

26.Synchronized Output Streams

27.Case Studies

28.Summary

29.C++23

30.C++23 or Later

31.Feature Testing of C++

Mathematical Constants