【お知らせ】この部分は英語原文のみでの提供となります。何卒ご了承ください。

2.1.16.6.3.38 _y0

1 Description
2 Syntax
3 Parameters
4 Return
5 Examples
6 Remark
7 See Also
8 Header to Include
9 Reference

Description

Compute the Bessel function. The _y0, _y1, and _yn routines return Bessel functions of the second kind: orders 0, 1, and n, respectively.

Syntax

double _y0( double x )

Parameters

x: [input] Floating-point value

Return

The _y0 returns a Bessel function of x.

Examples

EX1

int Y0_ex1()
{
    double vv;
    
    vv = _y0(0);
    out_double( "_y0(0)=", vv );         //output should be _y0(0)=--
    ASSERT( is_equal(vv, NANUM) );
    
    vv= _y0(11);
    out_double( "_y0(11)=", vv );        //output should be _y0(11)=-0.16885
    ASSERT( is_equal(round(vv, 5), -0.16885) );
    
    return 1;
}

Remark

Header to Include

origin.h