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J0(3)			     Library Functions Manual			   J0(3)

NAME
     j0, j0f, j1, j1f, jn, jnf, y0, y0f, y1, y1f, yn, ynf -- Bessel functions of
     first and second kind

LIBRARY
     Math Library (libm, -lm)

SYNOPSIS
     #include <math.h>

     double
     j0(double x);

     float
     j0f(float x);

     double
     j1(double x);

     float
     j1f(float x);

     double
     jn(int n, double x);

     float
     jnf(int n, float x);

     double
     y0(double x);

     float
     y0f(float x);

     double
     y1(double x);

     float
     y1f(float x);

     double
     yn(int n, double x);

     float
     ynf(int n, float x);

DESCRIPTION
     The  functions  j0(),  j0f(), j1() and j1f() compute the Bessel function of
     the first kind of the order 0 and the order 1, respectively, for  the  real
     value  x;	the  functions jn() and jnf() compute the Bessel function of the
     first kind of the integer order n for the real value x.

     The functions y0(), y0f(), y1(), and y1f() compute the linearly independent
     Bessel function of the second kind of the order 0 and the order 1,  respec-
     tively, for the positive real value x; the functions yn() and ynf() compute
     the Bessel function of the second kind for the integer order n for the pos-
     itive real value x.

RETURN VALUES
     If these functions are successful, the computed value is returned.

SEE ALSO
     math(3)

HISTORY
     This set of functions appeared in Version 7 AT&T UNIX.

FreeBSD 7.4			January 14, 2005			   J0(3)
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