98 lines
1.8 KiB
Markdown
98 lines
1.8 KiB
Markdown
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<!--
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@license Apache-2.0
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Copyright (c) 2018 The Stdlib Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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# rad2deg
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> Convert an angle from radians to degrees.
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<section class="usage">
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## Usage
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```javascript
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var rad2deg = require( '@stdlib/math/base/special/rad2deg' );
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```
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#### rad2deg( x )
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Converts an angle from radians to degrees.
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```javascript
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var d = rad2deg( 3.141592653589793/2.0 );
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// returns 90.0
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d = rad2deg( -3.141592653589793/4.0 );
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// returns -45.0
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d = rad2deg( NaN );
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// returns NaN
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```
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</section>
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<!-- /.usage -->
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<section class="notes">
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## Notes
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- Due to finite precision, canonical values may not be returned. For example,
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```javascript
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var d = rad2deg( 3.141592653589793/6.0 );
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// returns 29.999999999999996
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```
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</section>
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<!-- /.notes -->
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<section class="examples">
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## Examples
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<!-- eslint no-undef: "error" -->
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```javascript
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var randu = require( '@stdlib/random/base/randu' );
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var TWO_PI = require( '@stdlib/constants/float64/two-pi' );
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var rad2deg = require( '@stdlib/math/base/special/rad2deg' );
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var r;
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var d;
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var i;
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for ( i = 0; i < 100; i++ ) {
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r = randu() * TWO_PI;
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d = rad2deg( r );
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console.log( 'radians: %d => degrees: %d', r, d );
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}
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```
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</section>
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<!-- /.examples -->
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<section class="links">
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</section>
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<!-- /.links -->
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