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J0
!!!J0
NAME
SYNOPSIS
DESCRIPTION
CONFORMING TO
BUGS
----
!!NAME


j0, j1, jn, y0, y1, yn - Bessel functions
!!SYNOPSIS


__#include
__ ''x''__);
double j1(double__ ''x''__);
double jn(int__ ''n''__, double__ ''x''__);
double y0(double__ ''x''__);
double y1(double__ ''x''__);
double yn(int__ ''n''__, double__ ''x''__);
__
!!DESCRIPTION


The __j0()__ and __j1()__ functions return Bessel
functions of ''x'' of the first kind of orders 0 and 1,
respectively. The __jn()__ function returns the Bessel
function of ''x'' of the first kind of order
''n''.


The __y0()__ and __y1()__ functions return Bessel
functions of ''x'' of the second kind of orders 0 and 1,
respectively. The __yn()__ function returns the Bessel
function of ''x'' of the second kind of order
''n''.


For the functions __y0()__, __y1()__ and __yn()__,
the value of ''x'' must be positive. For negative values
of ''x'', these functions return -HUGE_VAL.
!!CONFORMING TO


SVID 3, BSD 4.3
!!BUGS


There are errors of up to 2e-16 in the values returned by
__j0()__, __j1()__ and __jn()__ for values of
''x'' between -8 and 8.
----

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Last edited on Monday, June 3, 2002 6:54:14 pm by "perry"

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