NetBSD/games/factor/factor.6

127 lines
4.0 KiB
Groff
Raw Normal View History

.\" $NetBSD: factor.6,v 1.4 1995/03/23 08:28:05 cgd Exp $
.\"
.\" Copyright (c) 1989, 1993
.\" The Regents of the University of California. All rights reserved.
1993-03-21 12:45:37 +03:00
.\"
.\" This code is derived from software contributed to Berkeley by
.\" Landon Curt Noll.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)factor.6 8.1 (Berkeley) 5/31/93
1993-03-21 12:45:37 +03:00
.\"
.\"
.\" By: Landon Curt Noll chongo@toad.com, ...!{sun,tolsoft}!hoptoad!chongo
.\"
.\" chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\
.\"
.Dd May 31, 1993
1993-08-05 05:46:15 +04:00
.Dt FACTOR 6
.Os
.Sh NAME
.Nm factor ,
.Nm primes
.Nd
factor a number, generate primes
.Sh SYNOPSIS
.Nm factor
.Op Ar number ...
.br
.Nm primes
.Op Ar start Op Ar stop
.Sh DESCRIPTION
1993-03-21 12:45:37 +03:00
The
1993-08-05 05:46:15 +04:00
.Nm factor
1993-03-21 12:45:37 +03:00
utility will factor integers between -2147483648 and 2147483647 inclusive.
1993-08-05 05:46:15 +04:00
When a number is factored, it is printed, followed by a
.Dq \: ,
1993-03-21 12:45:37 +03:00
and the list of factors on a single line.
Factors are listed in ascending order, and are preceded by a space.
If a factor divides a value more than once, it will be printed
more than once.
1993-08-05 05:46:15 +04:00
.Pp
1993-03-21 12:45:37 +03:00
When
1993-08-05 05:46:15 +04:00
.Nm factor
1993-03-21 12:45:37 +03:00
is invoked with one or more arguments,
each argument will be factored.
1993-08-05 05:46:15 +04:00
.Pp
1993-03-21 12:45:37 +03:00
When
1993-08-05 05:46:15 +04:00
.Nm factor
1993-03-21 12:45:37 +03:00
is invoked with no arguments,
1993-08-05 05:46:15 +04:00
.Nm factor
1993-03-21 12:45:37 +03:00
reads numbers, one per line, from standard input, until end of file or error.
Leading white-space and empty lines are ignored.
Numbers may be preceded by a single - or +.
Numbers are terminated by a non-digit character (such as a newline).
After a number is read, it is factored.
Input lines must not be longer than 255 characters.
1993-08-05 05:46:15 +04:00
.Pp
1993-03-21 12:45:37 +03:00
The
1993-08-05 05:46:15 +04:00
.Nm primes
1993-03-21 12:45:37 +03:00
utility prints primes in ascending order, one per line, starting at or above
1993-08-05 05:46:15 +04:00
.Ar start
1993-03-21 12:45:37 +03:00
and continuing until, but not including
1993-08-05 05:46:15 +04:00
.Ar stop .
1993-03-21 12:45:37 +03:00
The
1993-08-05 05:46:15 +04:00
.Ar start
1993-03-21 12:45:37 +03:00
value must be at least 0 and not greater than
1993-08-05 05:46:15 +04:00
.Ar stop .
1993-03-21 12:45:37 +03:00
The
1993-08-05 05:46:15 +04:00
.Ar stop
1993-03-21 12:45:37 +03:00
value must not be greater than 4294967295.
The default value of
1993-08-05 05:46:15 +04:00
.Ar stop
1993-03-21 12:45:37 +03:00
is 4294967295.
1993-08-05 05:46:15 +04:00
.Pp
1993-03-21 12:45:37 +03:00
When the
1993-08-05 05:46:15 +04:00
.Nm primes
1993-03-21 12:45:37 +03:00
utility is invoked with no arguments,
1993-08-05 05:46:15 +04:00
.Ar start
1993-03-21 12:45:37 +03:00
is read from standard input.
1993-08-05 05:46:15 +04:00
.Ar stop
1993-03-21 12:45:37 +03:00
is taken to be 4294967295.
The
1993-08-05 05:46:15 +04:00
.Ar start
1993-03-21 12:45:37 +03:00
value may be preceded by a single +.
The
1993-08-05 05:46:15 +04:00
.Ar start
1993-03-21 12:45:37 +03:00
value is terminated by a non-digit character (such as a newline).
The input line must not be longer than 255 characters.
1993-08-05 05:46:15 +04:00
.Sh DIAGNOSTICS
Out of range or invalid input results in
.Sq ouch
being written to standard error.
.Sh BUGS
.Nm Factor
cannot handle the
.Dq 10 most wanted
factor list,
.Nm primes
1993-03-21 12:45:37 +03:00
won't get you a world record.