Reference for Wiring version 1.0 Build 0100+ If you have a previous version, use the reference included with your software. *If see any errors or have any comments, let us know.*

Name | ## PI (3.14159...) |
---|---|

Description | PI is a mathematical constant with the value 3.14159265358979323846. It is the ratio of the circumference of a circle to its diameter. It is useful in combination with the trigonometric functions sin() and cos(). |

Syntax | ```
PI
``` |

Usage | Application |

Related | TWO_PI HALF_PI |