time-to-botec/js/node_modules/@stdlib/math/base/special/bessely0/README.md

y0

Compute the Bessel function of the second kind of order zero.

The Bessel function of the second kind of order zero is defined as

Usage

var y0 = require( '@stdlib/math/base/special/bessely0' );

y0( x )

Computes the Bessel function of the second kind of order zero at x.

var v = y0( 0.0 );
// returns -Infinity

v = y0( 1.0 );
// returns ~0.088

v = y0( Infinity );
// returns 0.0

If x < 0 or x is NaN, the function returns NaN.

var v = y0( -1.0 );
// returns NaN

v = y0( -Infinity );
// returns NaN

v = y0( NaN );
// returns NaN

Examples

var randu = require( '@stdlib/random/base/randu' );
var y0 = require( '@stdlib/math/base/special/bessely0' );

var x;
var i;

for ( i = 0; i < 100; i++ ) {
    x = randu() * 10.0;
    console.log( 'y0(%d) = %d', x, y0( x ) );
}