Bessel Functions: _y0, _y1, _yn
Visual Studio .NET 2003
Compute the Bessel function.
double _y0( double x ); double _y1( double x ) ; double _yn( int n, double x );
Parameters
- x
- Floating-point value.
- n
- Integer order of Bessel function.
Return Value
Each routine returns a Bessel function of x. If x is negative, the routine sets errno to EDOM, prints a _DOMAIN error message to stderr, and returns _HUGE_VAL. You can modify error handling by using _matherr.
Remarks
The _y0, _y1, and _yn routines return Bessel functions of the second kind: orders 0, 1, and n, respectively.
| Input | SEH Exception | Matherr Exception |
|---|---|---|
| ± QNAN,IND | INVALID | _DOMAIN |
| ± 0 | ZERODIVIDE | _SING |
| |x|<0.0 | INVALID | _DOMAIN |
Requirements
| Routine | Required header | Compatibility |
|---|---|---|
| _y0 | <math.h> | Win 98, Win Me, Win NT, Win 2000, Win XP |
| _y1 | <math.h> | Win 98, Win Me, Win NT, Win 2000, Win XP |
| _yn | <math.h> | Win 98, Win Me, Win NT, Win 2000, Win XP |
For additional compatibility information, see Compatibility in the Introduction.
Libraries
All versions of the C run-time libraries.
Example
See Bessel Functions for an example.
See Also
Floating-Point Support Routines | Bessel Functions | _matherr | Run-Time Routines and .NET Framework Equivalents
