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diff --git a/factor/factor.6 b/factor/factor.6 new file mode 100644 index 00000000..fe83c689 --- /dev/null +++ b/factor/factor.6 @@ -0,0 +1,116 @@ +.\" Copyright (c) 1989 The Regents of the University of California. +.\" All rights reserved. +.\" +.\" 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 5.3 (Berkeley) 6/23/90 +.\" +.\" +.\" By: Landon Curt Noll chongo@toad.com, ...!{sun,tolsoft}!hoptoad!chongo +.\" +.\" chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\ +.\" +.TH FACTOR 6 "June 23, 1990" +.UC 7 +.SH NAME +factor, primes \- factor a number, generate primes +.SH SYNOPSIS +.B factor +[ number ] ... +.PP +.B primes +[ start [ stop ]] +.SH DESCRIPTION +The +.I factor +utility will factor integers between -2147483648 and 2147483647 inclusive. +When a number is factored, it is printed, followed by a ``:'', +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. +.PP +When +.I factor +is invoked with one or more arguments, +each argument will be factored. +.PP +When +.I factor +is invoked with no arguments, +.I factor +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. +.PP +The +.I primes +utility prints primes in ascending order, one per line, starting at or above +.B start +and continuing until, but not including +.B stop. +The +.B start +value must be at least 0 and not greater than +.B stop.\& +The +.B stop +value must not be greater than 4294967295. +The default value of +.B stop +is 4294967295. +.PP +When the +.I primes +utility is invoked with no arguments, +.B start +is read from standard input. +.B Stop +is taken to be 4294967295. +The +.B start +value may be preceded by a single +. +The +.B start +value is terminated by a non-digit character (such as a newline). +The input line must not be longer than 255 characters. +.SH DIAGNOSTICS +Out of range or invalid input results in `ouch' being +written to standard error. +.SH BUGS +.I Factor +cannot handle the ``10 most wanted'' factor list, +.I primes +won't get you a world record. |