yn(), ynf()

Compute a Bessel function of the second kind

Synopsis:

#include <math.h>

double yn( int n, 
           double x );

float ynf( int n, 
           float x );

Arguments:

n, x
The numbers that you want to compute the Bessel function for.

Library:

libm

Use the -l m option to qcc to link against this library.

Description:

These functions compute the Bessel function of the second kind for n and x.

To check for error situations, use feclearexcept() and fetestexcept():

Returns:

The result of the Bessel function of n and x.

If x argument is too large in magnitude, or the correct result would cause an underflow, 0 is returned, and a range error may occur. If x is NaN, NaN is returned.

Errors:

FE_UNDERFLOW
The value of x is too large in magnitude, or an underflow occurred.

Classification:

yn() is POSIX 1003.1 XSI; ynf() is Unix

Safety:  
Cancellation point No
Interrupt handler No
Signal handler No
Thread Yes