95 lines
3 KiB
Groff
95 lines
3 KiB
Groff
.\" $NetBSD: primes.6,v 1.3 2008/02/03 03:29:17 wiz Exp $
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.\"
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.\" Copyright (c) 1989, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" Landon Curt Noll.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)factor.6 8.1 (Berkeley) 5/31/93
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.\"
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.\"
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.\" By: Landon Curt Noll chongo@toad.com, ...!{sun,tolsoft}!hoptoad!chongo
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.\"
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.\" chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\
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.\"
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.Dd February 3, 2008
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.Dt PRIMES 6
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.Os
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.Sh NAME
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.Nm primes
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.Nd generate primes
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.Sh SYNOPSIS
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.Nm primes
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.Op Fl d
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.Op Ar start Op Ar stop
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.Sh DESCRIPTION
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The
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.Nm
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utility prints primes in ascending order, one per line, starting
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at or above
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.Ar start
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and continuing until, but not including
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.Ar stop .
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The
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.Ar start
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value must be at least 0 and not greater than
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.Ar stop .
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The
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.Ar stop
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value must not be greater than 4294967295.
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The default value of
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.Ar stop
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is 4294967295.
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.Pp
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When the
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.Nm
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utility is invoked with no arguments,
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.Ar start
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is read from standard input.
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.Ar stop
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is taken to be 4294967295.
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The
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.Ar start
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value may be preceded by a single
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.Sq \&+ .
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The
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.Ar start
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value is terminated by a non-digit character (such as a newline).
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The input line must not be longer than 255 characters.
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When given the
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.Fl d
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argument,
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.Nm
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prints the difference between the current and the previous prime.
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.Sh DIAGNOSTICS
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Out of range or invalid input results in
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an appropriate error message
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being written to standard error.
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.Sh BUGS
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.Nm
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won't get you a world record.
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