README.md (1798B)
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 # rad2deg 22 23 > Convert an angle from radians to degrees. 24 25 <section class="usage"> 26 27 ## Usage 28 29 ```javascript 30 var rad2deg = require( '@stdlib/math/base/special/rad2deg' ); 31 ``` 32 33 #### rad2deg( x ) 34 35 Converts an angle from radians to degrees. 36 37 ```javascript 38 var d = rad2deg( 3.141592653589793/2.0 ); 39 // returns 90.0 40 41 d = rad2deg( -3.141592653589793/4.0 ); 42 // returns -45.0 43 44 d = rad2deg( NaN ); 45 // returns NaN 46 ``` 47 48 </section> 49 50 <!-- /.usage --> 51 52 <section class="notes"> 53 54 ## Notes 55 56 - Due to finite precision, canonical values may not be returned. For example, 57 58 ```javascript 59 var d = rad2deg( 3.141592653589793/6.0 ); 60 // returns 29.999999999999996 61 ``` 62 63 </section> 64 65 <!-- /.notes --> 66 67 <section class="examples"> 68 69 ## Examples 70 71 <!-- eslint no-undef: "error" --> 72 73 ```javascript 74 var randu = require( '@stdlib/random/base/randu' ); 75 var TWO_PI = require( '@stdlib/constants/float64/two-pi' ); 76 var rad2deg = require( '@stdlib/math/base/special/rad2deg' ); 77 78 var r; 79 var d; 80 var i; 81 82 for ( i = 0; i < 100; i++ ) { 83 r = randu() * TWO_PI; 84 d = rad2deg( r ); 85 console.log( 'radians: %d => degrees: %d', r, d ); 86 } 87 ``` 88 89 </section> 90 91 <!-- /.examples --> 92 93 <section class="links"> 94 95 </section> 96 97 <!-- /.links -->