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.\" from: @(#)j0.3 6.7 (Berkeley) 4/19/91 | |

.\" $FreeBSD: src/lib/msun/man/j0.3,v 1.13 2005/01/14 23:28:28 das Exp $ | |

.\" | |

.Dd January 14, 2005 | |

.Dt J0 3 | |

.Os | |

.Sh NAME | |

.Nm j0 , | |

.Nm j0f , | |

.Nm j1 , | |

.Nm j1f , | |

.Nm jn , | |

.Nm jnf , | |

.Nm y0 , | |

.Nm y0f , | |

.Nm y1 , | |

.Nm y1f , | |

.Nm yn , | |

.Nm ynf | |

.Nd Bessel functions of first and second kind | |

.Sh LIBRARY | |

.Lb libm | |

.Sh SYNOPSIS | |

.In math.h | |

.Ft double | |

.Fn j0 "double x" | |

.Ft float | |

.Fn j0f "float x" | |

.Ft double | |

.Fn j1 "double x" | |

.Ft float | |

.Fn j1f "float x" | |

.Ft double | |

.Fn jn "int n" "double x" | |

.Ft float | |

.Fn jnf "int n" "float x" | |

.Ft double | |

.Fn y0 "double x" | |

.Ft float | |

.Fn y0f "float x" | |

.Ft double | |

.Fn y1 "double x" | |

.Ft float | |

.Fn y1f "float x" | |

.Ft double | |

.Fn yn "int n" "double x" | |

.Ft float | |

.Fn ynf "int n" "float x" | |

.Sh DESCRIPTION | |

The functions | |

.Fn j0 , | |

.Fn j0f , | |

.Fn j1 | |

and | |

.Fn j1f | |

compute the | |

.Em Bessel function of the first kind of the order | |

0 and the | |

.Em order | |

1, respectively, | |

for the | |

real value | |

.Fa x ; | |

the functions | |

.Fn jn | |

and | |

.Fn jnf | |

compute the | |

.Em Bessel function of the first kind of the integer | |

.Em order | |

.Fa n | |

for the real value | |

.Fa x . | |

.Pp | |

The functions | |

.Fn y0 , | |

.Fn y0f , | |

.Fn y1 , | |

and | |

.Fn y1f | |

compute the linearly independent | |

.Em Bessel function of the second kind of the order | |

0 and the | |

.Em order | |

1, respectively, | |

for the | |

positive | |

.Em real | |

value | |

.Fa x ; | |

the functions | |

.Fn yn | |

and | |

.Fn ynf | |

compute the | |

.Em Bessel function of the second kind for the integer | |

.Em order | |

.Fa n | |

for the positive | |

.Em real | |

value | |

.Fa x . | |

.Sh RETURN VALUES | |

If these functions are successful, | |

the computed value is returned. | |

.Sh SEE ALSO | |

.Xr math 3 | |

.Sh HISTORY | |

This set of functions | |

appeared in | |

.At v7 . |