Sine

Compute the sine of a number.

Installation

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

Usage

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

sin( x )

Computes the sine of a number (in radians).

var v = sin( 0.0 );
// returns ~0.0

v = sin( 3.141592653589793/2.0 );
// returns ~1.0

v = sin( -3.141592653589793/6.0 );
// returns ~-0.5

Examples

var linspace = require( '@stdlib/array-base-linspace' );
var TWO_PI = require( '@stdlib/constants-float64-two-pi' );
var sin = require( '@stdlib/math-base-special-sin' );

var x = linspace( 0.0, TWO_PI, 100 );

var i;
for ( i = 0; i < x.length; i++ ) {
    console.log( sin( x[ i ] ) );
}

C APIs

Usage

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

stdlib_base_sin( x )

Computes the sine of a number (in radians).

double y = stdlib_base_sin( 3.141592653589793 / 2.0 );
// returns ~1.0

The function accepts the following arguments:

• x: [in] double input value.

double stdlib_base_sin( const double x );

Examples

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

int main( void ) {
    const double x[] = { 0.0, 0.523, 0.785, 1.047, 3.14 };

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

See Also

• @stdlib/math-base/special/cos: compute the cosine of a number.
• @stdlib/math-base/special/sinpi: compute sin(πx).
• @stdlib/math-base/special/tan: evaluate the tangent of a number.

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

Copyright

Copyright © 2016-2024. The Stdlib Authors.