Convert an angle from degrees to radians.
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> Convert an angle from degrees to radians.
``bash`
npm install @stdlib/math-base-special-deg2rad
`javascript`
var deg2rad = require( '@stdlib/math-base-special-deg2rad' );
#### deg2rad( x )
Converts an angle from degrees to radians.
`javascript
var r = deg2rad( 90.0 );
// returns ~1.571
r = deg2rad( -45.0 );
// returns ~-0.785
r = deg2rad( NaN );
// returns NaN
`
`javascript
var uniform = require( '@stdlib/random-array-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var deg2rad = require( '@stdlib/math-base-special-deg2rad' );
var opts = {
'dtype': 'float64'
};
var d = uniform( 100, -360.0, 360.0, opts );
logEachMap( 'degrees: %0.4f => radians: %0.4f', d, deg2rad );
`
*
`c`
#include "stdlib/math/base/special/deg2rad.h"
#### stdlib_base_deg2rad( x )
Converts an angle from degrees to radians.
`c`
double y = stdlib_base_deg2rad( 90.0 );
// returns ~1.571
The function accepts the following arguments:
- x: [in] double input value.
`c`
double stdlib_base_deg2rad( const double x );
`c
#include "stdlib/math/base/special/deg2rad.h"
#include
int main( void ) {
const double x[] = { 45.0, 90.0, 0.0, 0.0/0.0 };
double y;
int i;
for ( i = 0; i < 4; i++ ) {
y = stdlib_base_deg2rad( x[ i ] );
printf( "deg2rad(%lf) = %lf\n", x[ i ], y );
}
}
`
*
- [@stdlib/math-base/special/rad2deg][@stdlib/math/base/special/rad2deg]: convert an angle from radians to degrees.
*
This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].
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---
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