| factor.6 (79754) | factor.6 (104723) |
|---|---|
| 1.\" Copyright (c) 1989, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" Landon Curt Noll. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions --- 20 unchanged lines hidden (view full) --- 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" @(#)factor.6 8.1 (Berkeley) 5/31/93 36.\" | 1.\" Copyright (c) 1989, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" Landon Curt Noll. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions --- 20 unchanged lines hidden (view full) --- 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" @(#)factor.6 8.1 (Berkeley) 5/31/93 36.\" |
| 37.\" $FreeBSD: head/games/factor/factor.6 79754 2001-07-15 07:53:42Z dd $ | 37.\" $FreeBSD: head/games/factor/factor.6 104723 2002-10-09 20:00:25Z fanf $ |
| 38.\" 39.\" By: Landon Curt Noll chongo@toad.com, ...!{sun,tolsoft}!hoptoad!chongo 40.\" 41.\" chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\ 42.\" | 38.\" 39.\" By: Landon Curt Noll chongo@toad.com, ...!{sun,tolsoft}!hoptoad!chongo 40.\" 41.\" chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\ 42.\" |
| 43.TH FACTOR 6 "Jan 7, 1999" 44.UC 7 45.SH NAME 46factor, primes \- factor a number, generate primes 47.SH SYNOPSIS 48.B factor 49-[h] [ number ] ... 50.PP 51.B primes 52-[h] [ start [ stop ]] 53.SH DESCRIPTION | 43.Dd Oct 10, 2002 44.Dt FACTOR 6 45.Os 46.Sh NAME 47.Nm factor , 48.Nm primes 49.Nd factor a number, generate primes 50.Sh SYNOPSIS 51.Nm 52.Op Fl h 53.Op Ar number ... 54.br 55.Nm primes 56.Op Fl h 57.Op Ar start Op Ar stop 58.Sh DESCRIPTION |
| 54The | 59The |
| 55.I factor 56utility will factor integers between 0 and ULONG_MAX (4294967295 on 32 57bit architectures, 18446744073709551615 on 64 bit ones), inclusive. 58When a number is factored, it is printed, followed by a ``:'', | 60.Nm 61utility will factor positive integers. 62When a number is factored, it is printed, followed by a 63.Dq \&: , |
| 59and the list of factors on a single line. 60Factors are listed in ascending order, and are preceded by a space. | 64and the list of factors on a single line. 65Factors are listed in ascending order, and are preceded by a space. |
| 61If a factor divides a value more than once, it will be printed 62more than once. 63.PP | 66If a factor divides a value more than once, it will be printed more than once. 67.Pp |
| 64When | 68When |
| 65.I factor 66is invoked with one or more arguments, 67each argument will be factored. 68.PP | 69.Nm 70is invoked with one or more arguments, each argument will be factored. 71.Pp |
| 69When | 72When |
| 70.I factor | 73.Nm |
| 71is invoked with no arguments, | 74is invoked with no arguments, |
| 72.I factor | 75.Nm |
| 73reads numbers, one per line, from standard input, until end of file or error. 74Leading white-space and empty lines are ignored. | 76reads numbers, one per line, from standard input, until end of file or error. 77Leading white-space and empty lines are ignored. |
| 75Numbers may be preceded by a single - or +. | 78Numbers may be preceded by a single +. |
| 76Numbers are terminated by a non-digit character (such as a newline). 77After a number is read, it is factored. | 79Numbers are terminated by a non-digit character (such as a newline). 80After a number is read, it is factored. |
| 78Input lines must not be longer than 255 characters. 79.PP | 81.Pp |
| 80The | 82The |
| 81.I primes | 83.Nm primes |
| 82utility prints primes in ascending order, one per line, starting at or above | 84utility prints primes in ascending order, one per line, starting at or above |
| 83.B start | 85.Ar start |
| 84and continuing until, but not including | 86and continuing until, but not including |
| 85.B stop. | 87.Ar stop . |
| 86The | 88The |
| 87.B start | 89.Ar start |
| 88value must be at least 0 and not greater than | 90value must be at least 0 and not greater than |
| 89.B stop.\& | 91.Ar stop . |
| 90The | 92The |
| 91.B stop 92value must not be greater than 4294967295. 93The default value of 94.B stop 95is 4294967295. 96.PP | 93.Ar stop 94value must not be greater than the maximum. 95The default and maximum value of 96.Ar stop 97is 4294967295 on 32-bit architectures 98and 18446744073709551615 on 64-bit ones. 99.Pp |
| 97When the | 100When the |
| 98.I primes | 101.Nm primes |
| 99utility is invoked with no arguments, | 102utility is invoked with no arguments, |
| 100.B start 101is read from standard input. 102.B Stop 103is taken to be 4294967295. | 103.Ar start 104is read from standard input and 105.Ar stop 106is taken to be the maximum. |
| 104The | 107The |
| 105.B start | 108.Ar start |
| 106value may be preceded by a single +. 107The | 109value may be preceded by a single +. 110The |
| 108.B start | 111.Ar start |
| 109value is terminated by a non-digit character (such as a newline). | 112value is terminated by a non-digit character (such as a newline). |
| 110The input line must not be longer than 255 characters. 111.SH OPTIONS 112.LP 113.TP 8 114.B \-h 115Print the results in hexadecimal rather than decimal. 116.SH DIAGNOSTICS 117Out of range or invalid input results in `ouch' being 118written to standard error. 119.SH BUGS 120.I Factor 121cannot handle the ``10 most wanted'' factor list, 122.I primes | 113.Sh DIAGNOSTICS 114.Bl -item 115.It 116negative numbers aren't permitted 117.It 118illegal numeric format 119.It 120start value must be less than stop value 121.It 122Result too large 123.El 124.Sh BUGS 125.Nm 126cannot handle the 127.Dq 10 most wanted 128factor list, 129.Nm primes |
| 123won't get you a world record. | 130won't get you a world record. |