README.md (1325B)
1 <!-- 2 3 @license Apache-2.0 4 5 Copyright (c) 2018 The Stdlib Authors. 6 7 Licensed under the Apache License, Version 2.0 (the "License"); 8 you may not use this file except in compliance with the License. 9 You may obtain a copy of the License at 10 11 http://www.apache.org/licenses/LICENSE-2.0 12 13 Unless required by applicable law or agreed to in writing, software 14 distributed under the License is distributed on an "AS IS" BASIS, 15 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 See the License for the specific language governing permissions and 17 limitations under the License. 18 19 --> 20 21 # 1/2 times π 22 23 > One half times the mathematical constant [π][pi]. 24 25 <section class="usage"> 26 27 ## Usage 28 29 ```javascript 30 var HALF_PI = require( '@stdlib/constants/float64/half-pi' ); 31 ``` 32 33 #### HALF_PI 34 35 One half times the mathematical constant [π][pi]. 36 37 ```javascript 38 var bool = ( HALF_PI === 1.5707963267948966 ); 39 // returns true 40 ``` 41 42 </section> 43 44 <!-- /.usage --> 45 46 <section class="examples"> 47 48 ## Examples 49 50 <!-- TODO: better example --> 51 52 <!-- eslint no-undef: "error" --> 53 54 ```javascript 55 var HALF_PI = require( '@stdlib/constants/float64/half-pi' ); 56 57 console.log( HALF_PI ); 58 // => 1.5707963267948966 59 ``` 60 61 </section> 62 63 <!-- /.examples --> 64 65 <section class="links"> 66 67 [pi]: https://en.wikipedia.org/wiki/Pi 68 69 </section> 70 71 <!-- /.links -->