y0(), y0f()

Compute a Bessel function of the second kind of order 0

Synopsis:

#include <math.h>

double y0( double x );

float y0f( float x );

Arguments:

x
The number 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 for x of the second kind of order 0.

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

Returns:

The result of the Bessel function for x of second kind of order 0.

If x is: These functions return: Errors:
Negative, including -Inf NaN FE_INVALID
0.0 -Inf FE_DIVBYZERO
NaN NaN
Inf 0.0
If the correct result would cause: These functions return: Errors:
Overflow -Inf FE_OVERFLOW
Underflow 0.0  

These functions raise FE_INEXACT if the FPU reports that the result can't be exactly represented as a floating-point number.

Classification:

y0() is POSIX 1003.1 XSI; y0f() is Unix

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