sind

Compute the sine of an angle measured in degrees.

Installation

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

Usage

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

sind( x )

Computes the sine of x (in degrees).

var v = sind( 0.0 );
// returns 0.0

v = sind( 30.0 );
// returns ~0.5

v = sind( 90.0 );
// returns 1.0

v = sind( NaN );
// returns NaN

Examples

var uniform = require( '@stdlib/random-array-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var sind = require( '@stdlib/math-base-special-sind' );

var opts = {
    'dtype': 'float64'
};
var x = uniform( 100, -180.0, 180.0, opts );

logEachMap( 'sind(%0.4f) = %0.4f', x, sind );

C APIs

Usage

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

stdlib_base_sind( x )

Computes the sine of x (in degrees).

double out = stdlib_base_sind( 0.0 );
// returns 0.0

out = stdlib_base_sind( 30.0 );
// returns ~0.5

The function accepts the following arguments:

• x: [in] double input value.

double stdlib_base_sind( const double x );

Examples

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

int main( void ) {
    const double x[] = { 0.0, 30.0, 45.0, 60.0, 90.0 };

    double y;
    int i;
    for ( i = 0; i < 5; i++ ) {
        y = stdlib_base_sind( x[ i ] );
        printf( "sind(%lf) = %lf\n", x[ i ], y );
    }
}

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.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2026. The Stdlib Authors.