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RedHat 9 (Linux i386) - man page for j0l (redhat section 3)

J0(3)				    Linux Programmer's Manual				    J0(3)

NAME
       j0,  j0f,  j0l,	j1,  j1f,  j1l,  jn, jnf, jnl, y0, y0f, y0l, y1, y1f, y1l, yn, ynf, ynl -
       Bessel functions

SYNOPSIS
       #include <math.h>

       double j0(double 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);

       float j0f(float x);
       float j1f(float x);
       float jnf(int n, float x);
       float y0f(float x);
       float y1f(float x);
       float ynf(int n, float x);

       long double j0l(long double x);
       long double j1l(long double x);
       long double jnl(int n, long double x);
       long double y0l(long double x);
       long double y1l(long double x);
       long double ynl(int n, long 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 val-
       ues of x, these functions return -HUGE_VAL.

       The  j0f()  etc. and j0l() etc. functions are versions that take and return float and long
       double values, respectively.

CONFORMING TO
       The functions returning double conform to SVID 3, BSD 4.3, XPG4,  POSIX	1003.1-2001.  The
       other functions exist by analogy, and exist on several platforms.

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.

					    2002-08-25					    J0(3)


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