deg2radf

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

Usage

var deg2radf = require( '@stdlib/math/base/special/deg2radf' );

deg2radf( x )

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

var r = deg2radf( 90.0 );
// returns ~1.571

r = deg2radf( -45.0 );
// returns ~-0.785

r = deg2radf( NaN );
// returns NaN

Examples

var randu = require( '@stdlib/random/base/randu' );
var deg2radf = require( '@stdlib/math/base/special/deg2radf' );

var d;
var r;
var i;

for ( i = 0; i < 100; i++ ) {
    d = (randu()*720.0) - 360.0;
    r = deg2radf( d );
    console.log( 'degrees: %d => radians: %d', d, r );
}

C APIs

Usage

#include "stdlib/math/base/special/deg2radf.h"

stdlib_base_deg2radf( x )

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

float y = stdlib_base_deg2radf( 90.0f );
// returns ~1.571f

The function accepts the following arguments:

  • x: [in] float input value.
float stdlib_base_deg2radf( const float x );

Examples

#include "stdlib/math/base/special/deg2radf.h"
#include <stdio.h>

int main() {
    float x[] = { 45.0f, 90.0f, 0.0f, 0.0f/0.0f };

    float y;
    int i;
    for ( i = 0; i < 4; i++ ) {
        y = stdlib_base_deg2radf( x[ i ] );
        printf( "deg2radf(%f) = %f\n", x[ i ], y );
    }
}