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    The following form allows you to view linux man pages.

    Command:

    jn

    
    
    
    

    SYNOPSIS

           #include <math.h>
    
           double j0(double x);
           double j1(double x);
           double jn(int n, double x);
    
           float j0f(float x);
           float j1f(float x);
           float jnf(int n, float x);
    
           long double j0l(long double x);
           long double j1l(long double x);
           long double jnl(int n, long double x);
    
           Link with -lm.
    
       Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
    
           j0(), j1(), jn():
               _SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE
           j0f(), j0l(), j1f(), j1l(), jnf(), jnl():
               _SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE >= 600
    
    
    

    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 j0f(), j1f(), and jnf(),  functions  are  versions  that  take  and
           return  float  values.   The j0l(), j1l(), and jnl() functions are ver-
           sions that take and return long double values.
    
    
    

    RETURN VALUE

           On success, these functions return the appropriate Bessel value of  the
           first kind for x.
    
           If x is a NaN, a NaN is returned.
    
           If x is too large in magnitude, or the result underflows, a range error
           occurs, and the return value is 0.
    
    
    

    ERRORS

           See math_error(7) for information on how to determine whether an  error
           has occurred when calling these functions.
    
           The following errors can occur:
    
           Range error: result underflow, or x is too large in magnitude
                  errno is set to ERANGE.
    
    
                                      2014-01-18                             J0(3)
    
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