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Revision 1.6, Sat Feb 3 15:40:29 2018 UTC (2 years, 11 months ago) by christos
Branch: MAIN
CVS Tags: phil-wifi-base, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, netbsd-9-base, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, is-mlppp-base, is-mlppp, HEAD
Changes since 1.5: +3 -10 lines

PR/52976: Eitan Adler: handle larger primes
Using results from
    J. Sorenson and J. Webster, Strong pseudoprimes to twelve prime
    bases, Math. Comp. 86(304):985-1003, 2017.
teach primes(6) to enumerate primes up to 2^64 - 1.  Until Sorenson
and Webster's paper, we did not know how many strong speudoprime tests
were required when testing alleged primes between 3825123056546413051
and 2^64 - 1.

Adapted from: FreeBSD

.\"	$NetBSD: primes.6,v 1.6 2018/02/03 15:40:29 christos Exp $
.\"
.\" Copyright (c) 1989, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" Landon Curt Noll.
.\"
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.\" modification, are permitted provided that the following conditions
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.\"	@(#)factor.6	8.1 (Berkeley) 5/31/93
.\"
.\"
.\" By Landon Curt Noll, http://www.isthe.com/chongo/index.html /\oo/\
.\"
.Dd February 2, 2018
.Dt PRIMES 6
.Os
.Sh NAME
.Nm primes
.Nd generate primes
.Sh SYNOPSIS
.Nm primes
.Op Fl dh
.Op Ar start Op Ar stop
.Sh DESCRIPTION
The
.Nm
utility prints primes in ascending order, one per line, starting
at or above
.Ar start
and continuing until, but not including
.Ar stop .
The
.Ar start
value must be at least 0 and not greater than
.Ar stop .
The
.Ar stop
value must not be greater than 3825123056546413050.
The default value of
.Ar stop
is 3825123056546413050.
.Pp
When the
.Nm
utility is invoked with no arguments,
.Ar start
is read from standard input and
.Ar stop
is taken to be 3825123056546413050.
The
.Ar start
value may be preceded by a single
.Sq \&+ .
The
.Ar start
value is terminated by a non-digit character (such as a newline).
The input line must not be longer than 255 characters.
.Pp
When given the
.Fl d
argument,
.Nm
prints the difference between the current and the previous prime.
.Pp
When given the
.Fl h
argument,
.Nm
prints the prime numbers in hexadecimal.
.Sh DIAGNOSTICS
Out of range or invalid input results in
an appropriate error message to standard error.
.Sh AUTHORS
.An -nosplit
Originally by
.An Landon Curt Noll ,
extended to some 64-bit primes by
.An Colin Percival .
.Sh BUGS
This
.Nm
program won't get you a world record.