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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

Bessel Functions: _j0, _j1, _jn

Compute the Bessel function.

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

x

Floating-point value.

n

Integer order of Bessel function.

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

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

Routine

Required header

_j0

<math.h>

_j1

<math.h>

_jn

<math.h>

For additional compatibility information, see Compatibility in the Introduction.

See Bessel Functions for an example.

Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.

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