time-to-botec/squiggle/node_modules/@stdlib/math/base/special/sincos/README.md

sincos

Simultaneously compute the sine and cosine of a number.

Usage

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

sincos( [out,] x )

Simultaneously computes the sine and cosine of a number (in radians).

var v = sincos( 0.0 );
// returns [ ~0.0, ~1.0 ]

v = sincos( 3.141592653589793/2.0 );
// returns [ ~1.0, ~0.0 ]

v = sincos( -3.141592653589793/6.0 );
// returns [ ~-0.5, ~0.866 ]

By default, the function returns the sine and cosine as a two-element array. To avoid extra memory allocation, the function supports providing an output (destination) object.

var Float64Array = require( '@stdlib/array/float64' );

var out = new Float64Array( 2 );

var v = sincos( out, 0.0 );
// returns <Float64Array>[ ~0.0, ~1.0 ]

var bool = ( v === out );
// returns true

Examples

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

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

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