@stdlib/math-base-special-rad2deg NPM

rad2deg

$NPM version$ $Build Status$ $Coverage Status$

Convert an angle from radians to degrees.

Installation

npm install @stdlib/math-base-special-rad2deg

Usage

var rad2deg = require( '@stdlib/math-base-special-rad2deg' );

rad2deg( x )

Converts an angle from radians to degrees.

var d = rad2deg( 3.141592653589793/2.0 );
// returns 90.0

d = rad2deg( -3.141592653589793/4.0 );
// returns -45.0

d = rad2deg( NaN );
// returns NaN

Notes

Due to finite precision, canonical values may not be returned. For example,
```
var d = rad2deg( 3.141592653589793/6.0 );
// returns 29.999999999999996
```

Examples

var randu = require( '@stdlib/random-base-randu' );
var TWO_PI = require( '@stdlib/constants-float64-two-pi' );
var rad2deg = require( '@stdlib/math-base-special-rad2deg' );

var r;
var d;
var i;

for ( i = 0; i < 100; i++ ) {
    r = randu() * TWO_PI;
    d = rad2deg( r );
    console.log( 'radians: %d => degrees: %d', r, d );
}

C APIs

Usage

#include "stdlib/math/base/special/rad2deg.h"

stdlib_base_rad2deg( x )

Converts an angle from radians to degrees.

double x = 3.141592653589793/2.0;
double d = stdlib_base_rad2deg( x );
// returns 90.0

x = -3.141592653589793/4.0;
d = stdlib_base_rad2deg( x );
// returns -45.0

The function accepts the following arguments:

x: [in] double input value (in radians).

double stdlib_base_rad2deg( const double x );

Examples

#include "stdlib/math/base/special/rad2deg.h"
#include "stdlib/constants/float64/two_pi.h"
#include <stdlib.h>
#include <stdio.h>

int main( void ) {
    double x;
    double d;
    int i;

    for ( i = 0; i < 100; i++ ) {
        x = (double)rand() / (double)RAND_MAX * STDLIB_CONSTANT_FLOAT64_TWO_PI;
        d = stdlib_base_rad2deg( x );
        printf( "radians: %lf => degrees: %lf\n", x, d );
    }
}

Notice

This package is part of 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, see the main project repository.