rad2degf

Convert an angle from radians to degrees (single-precision).

Usage

var rad2degf = require( '@stdlib/math/base/special/rad2degf' );

rad2degf( x )

Converts an angle from radians to degrees (single-precision).

var d = rad2degf( 3.141592653589793 / 2.0 );
// returns 90.0

d = rad2degf( -3.141592653589793 / 4.0 );
// returns -45.0

d = rad2degf( NaN );
// returns NaN

Notes

Due to finite precision, canonical values may not be returned. For example,

var d = rad2degf( 3.141592653589793 / 6.0 );
// returns 30.000001907348633

Examples

var randu = require( '@stdlib/random/base/randu' );
var TWO_PI = require( '@stdlib/constants/float32/two-pi' );
var rad2degf = require( '@stdlib/math/base/special/rad2degf' );

var r;
var d;
var i;

for ( i = 0; i < 100; i++ ) {
    r = randu() * TWO_PI;
    d = rad2degf( r );
    console.log( 'radians: %d => degrees: %d', r, d );
}

C APIs

Usage

#include "stdlib/math/base/special/rad2degf.h"

stdlib_base_rad2degf( x )

Converts an angle from radians to degrees (single-precision).

float x = 3.141592653589793f / 2.0f;
float d = stdlib_base_rad2degf( x );
// returns 90.0f

x = -3.141592653589793f / 4.0f;
d = stdlib_base_rad2degf( x );
// returns -45.0f

The function accepts the following arguments:

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

float stdlib_base_rad2degf( const float x );

Examples

#include "stdlib/math/base/special/rad2degf.h"
#include "stdlib/constants/float32/two_pi.h"
#include <stdlib.h>
#include <stdio.h>

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

    for ( i = 0; i < 100; i++ ) {
        x = (float)rand() / (float)RAND_MAX * STDLIB_CONSTANT_FLOAT32_TWO_PI;
        d = stdlib_base_rad2degf( x );
        printf( "radians: %f => degrees: %f\n", x, d );
    }
}