.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\"
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.\" References consulted:
.\"     Linux libc source code
.\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\"     386BSD man pages
.\" Modified Sat Jul 24 19:08:17 1993 by Rik Faith (faith@cs.unc.edu)
.\" Translated into Spanish Mon Mar  2 15:57:12 CET 1998 by Gerardo
.\" Aburruzaga García <gerardo.aburruzaga@uca.es>
.\"
.TH J0 3  "2 de Marzo de 1998" "" "Manual del Programador de Linux"
.SH NOMBRE
j0, j1, jn, y0, y1, yn \- funciones de Bessel
.SH SINOPSIS
.nf
.B #include <math.h>
.sp
.BI "double j0(double " x );
.sp
.BI "double j1(double " x );
.sp
.BI "double jn(int " n ", double " x );
.sp
.BI "double y0(double " x );
.sp
.BI "double y1(double " x );
.sp
.BI "double yn(int " n ", double " x );
.fi
.SH DESCRIPCIÓN
Las funciones \fBj0()\fP y \fBj1()\fP devuelven las funciones de
Bessel de \fIx\fP de primera clase de órdenes 0 y 1,
respectivamente. La función \fBjn()\fP devuelve la función de Bessel
de \fIx\fP de primera clase de orden \fIn\fP.
.PP
Las funciones \fBy0()\fP e \fBy1()\fP devuelven las funciones de
Bessel de \fIx\fP de segunda clase de órdenes 0 y 1,
respectivamente. La función \fByn()\fP devuelve la función de Bessel
de \fIx\fP de segunda clase de orden \fIn\fP.
.PP
Para las funciones \fBy0()\fP, \fBy1()\fP e \fByn()\fP, el valor de
\fIx\fP debe ser positivo. Para valores negativos de \fIx\fP, estas
funciones devuelven \-HUGE_VAL.
.SH "CONFORME A"
SVID 3, BSD 4.3
.SH FALLOS
Hay errores de hasta 2e\-16 en los valores devueltos por \fBj0()\fP,
\fBj1()\fP y \fBjn()\fP para valores de \fIx\fP entre \-8 y 8.