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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 |

### HALF_PI (1.57079...)

Description | HALF_PI is a mathematical constant with the value 1.57079632679489661923. It is half the ratio of the circumference of a circle to its diameter. It is useful in combination with the trigonometric functions sin() and cos().
Syntax |
    HALF_PI
Usage | Application
Related | PI TWO_PI

Updated on July 07, 2011 11:08:20pm PDT