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Bessel Functions: _j0, _j1, _jn

Compute the Bessel function.

double _j0( 
   double x )
;
double _j1( 
   double x 
);
double _jn( 
   int n,
   double x 
);

Parameters

x
Floating-point value.
n
Integer order of Bessel function.

Return Value

Each of these routines returns a Bessel function of x. You can modify error handling by using _matherr.

Remarks

The _j0, _j1, and _jn routines return Bessel functions of the first kind: orders 0, 1, and n, respectively.

Input SEH Exception Matherr Exception
± QNAN,IND INVALID _DOMAIN

Requirements

Routine Required header Compatibility
_j0 <math.h> Win 98, Win Me, Win NT, Win 2000, Win XP
_j1 <math.h> Win 98, Win Me, Win NT, Win 2000, Win XP
_jn <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

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