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X-Hacker.org- Microsoft C - <b>bessel() return result of a bessel function of x</b>
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bessel() Return Result of a Bessel Function of x
#include <math.h>
double j0(x);
double x; Floating-point value
double j1(x);
double x; Floating-point value
double jn(n,x);
int n; Integer order
double x; Floating-point value
double y0(x);
double x; Floating-point value
double y1(x);
double x; Floating-point value
double yn(n,x);
int n; Integer order
double x; Floating-point value
The "bessel routine" comprises the six functions j0(),j1(), jn(),
y0(), y1(), and yn(). The j0(), j1(), and jn() routines return
Bessel functions of the first kind of orders--0, 1, and n,
respectively.
The y0(), y1(), and yn() routines return Bessel functions of the
second kind of orders, 0, 1, and n respectively.
Returns: The result of a Bessel function of 'x'. For y0(), y1(),
and yn(), if 'x' is negative, 'errno' is set to EDOM, a
DOMAIN error message is printed to 'stderr', and the
value of negative HUGE is returned.
Notes: 'x' must be positive.
Error handling can be modified by using the matherr()
routine.
-------------------------------- Example ---------------------------------
The following statements return the Bessel function of 'x'.
#include <math.h>
double x, y, z;
main()
{
y = j0(x);
z = yn(3,x);
.
.
}
See Also: matherr()
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