diff options
Diffstat (limited to 'man3/j0.3')
| -rw-r--r-- | man3/j0.3 | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/man3/j0.3 b/man3/j0.3 new file mode 100644 index 000000000..a8a0407b1 --- /dev/null +++ b/man3/j0.3 @@ -0,0 +1,96 @@ +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" +.\" Permission is granted to make and distribute verbatim copies of this +.\" manual provided the copyright notice and this permission notice are +.\" preserved on all copies. +.\" +.\" Permission is granted to copy and distribute modified versions of this +.\" manual under the conditions for verbatim copying, provided that the +.\" entire resulting derived work is distributed under the terms of a +.\" permission notice identical to this one. +.\" +.\" Since the Linux kernel and libraries are constantly changing, this +.\" manual page may be incorrect or out-of-date. The author(s) assume no +.\" responsibility for errors or omissions, or for damages resulting from +.\" the use of the information contained herein. The author(s) may not +.\" have taken the same level of care in the production of this manual, +.\" which is licensed free of charge, as they might when working +.\" professionally. +.\" +.\" Formatted or processed versions of this manual, if unaccompanied by +.\" the source, must acknowledge the copyright and authors of this work. +.\" +.\" 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) +.\" Modified 2002-08-25, aeb +.\" +.TH J0 3 2002-08-25 "" "Linux Programmer's Manual" +.SH NAME +j0, j0f, j0l, j1, j1f, j1l, jn, jnf, jnl, +y0, y0f, y0l, y1, y1f, y1l, yn, ynf, ynl \- Bessel functions +.SH SYNOPSIS +.nf +.B #include <math.h> +.sp +.BI "double j0(double " x ); +.br +.BI "double j1(double " x ); +.br +.BI "double jn(int " n ", double " x ); +.br +.BI "double y0(double " x ); +.br +.BI "double y1(double " x ); +.br +.BI "double yn(int " n ", double " x ); +.sp +.BI "float j0f(float " x ); +.br +.BI "float j1f(float " x ); +.br +.BI "float jnf(int " n ", float " x ); +.br +.BI "float y0f(float " x ); +.br +.BI "float y1f(float " x ); +.br +.BI "float ynf(int " n ", float " x ); +.sp +.BI "long double j0l(long double " x ); +.br +.BI "long double j1l(long double " x ); +.br +.BI "long double jnl(int " n ", long double " x ); +.br +.BI "long double y0l(long double " x ); +.br +.BI "long double y1l(long double " x ); +.br +.BI "long double ynl(int " n ", long double " x ); +.fi +.sp +Link with \-lm. +.SH DESCRIPTION +The \fBj0()\fP and \fBj1()\fP functions return Bessel functions of \fIx\fP +of the first kind of orders 0 and 1, respectively. The \fBjn()\fP function +returns the Bessel function of \fIx\fP of the first kind of order \fIn\fP. +.PP +The \fBy0()\fP and \fBy1()\fP functions return Bessel functions of \fIx\fP +of the second kind of orders 0 and 1, respectively. The \fByn()\fP function +returns the Bessel function of \fIx\fP of the second kind of order \fIn\fP. +.PP +For the functions \fBy0()\fP, \fBy1()\fP and \fByn()\fP, the value of \fIx\fP +must be positive. For negative values of \fIx\fP, these functions return +\-HUGE_VAL. +.PP +The \fBj0f()\fP etc. and \fBj0l()\fP etc. functions are versions that take +and return float and long double values, respectively. +.SH "CONFORMING TO" +The functions returning double conform to SVID 3, BSD 4.3, XPG4, +POSIX 1003.1-2001. The other functions are C99 requirements. +.SH BUGS +There are errors of up to 2e\-16 in the values returned by \fBj0()\fP, +\fBj1()\fP and \fBjn()\fP for values of \fIx\fP between \-8 and 8. |