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Simultaneously compute the sine and cosine of a number times π.
import sincospi from 'https://cdn.jsdelivr.net/gh/stdlib-js/math-base-special-sincospi@esm/index.mjs';You can also import the following named exports from the package:
import { assign } from 'https://cdn.jsdelivr.net/gh/stdlib-js/math-base-special-sincospi@esm/index.mjs';Simultaneously computes the sine and cosine of a number times π more accurately than sincos(pi*x), especially for large x.
var v = sincospi( 0.0 );
// returns [ 0.0, 1.0 ]
v = sincospi( 0.5 );
// returns [ 1.0, 0.0 ]
v = sincospi( 0.1 );
// returns [ ~0.309, ~0.951 ]
v = sincospi( NaN );
// returns [ NaN, NaN ]Simultaneously computes the sine and cosine of a number times π more accurately than sincos(pi*x), especially for large x, and assigns results to a provided output array.
import Float64Array from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-float64@esm/index.mjs';
var out = new Float64Array( 2 );
var v = sincospi.assign( 0.0, out, 1, 0 );
// returns <Float64Array>[ 0.0, 1.0 ]
var bool = ( v === out );
// returns true<!DOCTYPE html>
<html lang="en">
<body>
<script type="module">
import linspace from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-base-linspace@esm/index.mjs';
import sincospi from 'https://cdn.jsdelivr.net/gh/stdlib-js/math-base-special-sincospi@esm/index.mjs';
var x = linspace( 0.0, 2.0, 101 );
var i;
for ( i = 0; i < x.length; i++ ) {
console.log( sincospi( x[ i ] ) );
}
</script>
</body>
</html>@stdlib/math-base/special/cospi: compute cos(πx).@stdlib/math-base/special/sincos: simultaneously compute the sine and cosine of a number.@stdlib/math-base/special/sinpi: compute sin(πx).
This package is part of stdlib, a standard library 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.
See LICENSE.
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