0.3.1 • Published 3 months ago
@stdlib/math-base-special-cospi v0.3.1
cospi
Installation
npm install @stdlib/math-base-special-cospi
Usage
var cospi = require( '@stdlib/math-base-special-cospi' );
cospi( x )
Computes cos(πx)
more accurately than cos(pi*x)
, especially for large x
.
var y = cospi( 0.0 );
// returns 1.0
y = cospi( 0.5 );
// returns 0.0
y = cospi( 0.1 );
// returns ~0.951
y = cospi( NaN );
// returns NaN
Examples
var linspace = require( '@stdlib/array-base-linspace' );
var cospi = require( '@stdlib/math-base-special-cospi' );
var x = linspace( -100.0, 100.0, 100 );
var i;
for ( i = 0; i < x.length; i++ ) {
console.log( cospi( x[ i ] ) );
}
See Also
@stdlib/math-base/special/cos
: compute the cosine 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
License
See LICENSE.
Copyright
Copyright © 2016-2024. The Stdlib Authors.