Return to orders.7 CVS log

Up to [cvs.NetBSD.org] / src / share / man / man7

Annotation of src/share/man/man7/orders.7, Revision 1.6

1.6     ! jruoho      1: .\" $NetBSD: orders.7,v 1.5 2010/12/14 13:32:14 jruoho Exp $
1.1       jruoho      2: .\"
                      3: .\" Copyright (c) 2010 The NetBSD Foundation, Inc.
                      4: .\" All rights reserved.
                      5: .\"
                      6: .\" This code is derived from software contributed to The NetBSD Foundation
                      7: .\" by Jukka Ruohonen.
                      8: .\"
                      9: .\" Redistribution and use in source and binary forms, with or without
                     10: .\" modification, are permitted provided that the following conditions
                     11: .\" are met:
                     12: .\" 1. Redistributions of source code must retain the above copyright
                     13: .\"    notice, this list of conditions and the following disclaimer.
                     14: .\" 2. Redistributions in binary form must reproduce the above copyright
                     15: .\"    notice, this list of conditions and the following disclaimer in the
                     16: .\"    documentation and/or other materials provided with the distribution.
                     17: .\"
                     18: .\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
                     19: .\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     20: .\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     21: .\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
                     22: .\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     23: .\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     24: .\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     25: .\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     26: .\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     27: .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     28: .\" POSSIBILITY OF SUCH DAMAGE.
                     29: .\"
1.6     ! jruoho     30: .Dd August 6, 2011
1.1       jruoho     31: .Dt ORDERS 7
                     32: .Os
                     33: .Sh NAME
                     34: .Nm orders
                     35: .Nd orders of magnitude
                     36: .Sh DESCRIPTION
1.2       jruoho     37: The following table lists common multiples of bytes.
1.1       jruoho     38: .Bl -column -offset 2n \
                     39: "Kilobyte" "Prefix" "Power of 2" "Power of 10"
                     40: .It Sy Name Ta Sy Prefix Ta Sy Power of 2 Ta Sy Power of 10
                     41: .It Kilobyte Ta kB Ta 2^10 Ta 10^3
                     42: .It Megabyte Ta MB Ta 2^20 Ta 10^6
                     43: .It Gigabyte Ta GB Ta 2^30 Ta 10^9
                     44: .It Terabyte Ta TB Ta 2^40 Ta 10^12
                     45: .It Petabyte Ta PB Ta 2^50 Ta 10^15
                     46: .It Exabyte Ta EB Ta 2^60 Ta 10^18
                     47: .It Zettabyte Ta ZB Ta 2^70 Ta 10^21
                     48: .It Yottabyte Ta YB Ta 2^80 Ta 10^24
                     49: .El
                     50: .Pp
1.6     ! jruoho     51: The following table lists common bit rates as a power of ten.
        !            52: .Bl -column -offset 2n \
        !            53: "Megabit per second" "Prefix" "Bit per second" "Byte per second"
        !            54: .It Sy Name Ta Sy Prefix Ta Sy Bit per second Ta Sy Byte per second
        !            55: .It Bit per second Ta bit/s Ta 1 Ta 0.125
        !            56: .It Byte per second Ta B/s Ta 8 Ta 1
        !            57: .It Kilobit per second Ta kbit/s Ta 10^3 Ta 125
        !            58: .It Kilobyte per second Ta kB/s Ta 8 * 10^3 Ta 1000
        !            59: .It Megabit per second Ta Mbit/s Ta 10^6 Ta 125000
        !            60: .It Megabyte per second Ta MB/s Ta 8 * 10^6 Ta 1000000
        !            61: .It Gigabit per second Ta Gbit/s Ta 10^9 Ta 125000000
        !            62: .It Gigabyte per second Ta GB/s Ta 8 * 10^9 Ta 1000000000
        !            63: .It Terabit per second Ta Tbit/s Ta 10^12 Ta 125000000000
        !            64: .It Terabyte per second Ta TB/s Ta 8 * 10^12 Ta 1000000000000
        !            65: .El
        !            66: .Pp
1.1       jruoho     67: The following table lists common orders of magnitude as a power of ten.
                     68: .Bl -column -offset 2n \
                     69: "Septillionth" "Order" "Prefix" "Symbol" "Decimal"
                     70: .It Sy Name Ta Sy Order Ta Sy Prefix Ta Sy Symbol Ta Sy Decimal
1.2       jruoho     71: .It Septillionth Ta 10^-24 Ta yocto Ta y Ta 0.000000000000000000000001
                     72: .It Sextillionth Ta 10^-21 Ta zepto Ta z Ta 0.000000000000000000001
                     73: .It Quintillionth Ta 10^-18 Ta atto Ta a Ta 0.000000000000000001
                     74: .It Quadrillionth Ta 10^-15 Ta femto Ta f Ta 0.000000000000001
                     75: .It Trillionth Ta 10^-12 Ta pico Ta p Ta 0.000000000001
                     76: .It Billionth Ta 10^-9 Ta nano Ta n Ta 0.000000001
                     77: .It Millionth Ta 10^-6 Ta micro  Ta mu Ta 0.000001
                     78: .It Thousandth Ta 10^-3 Ta milli Ta m Ta 0.001
                     79: .It Hundredth Ta 10^-2 Ta centi Ta c Ta 0.01
                     80: .It Tenth Ta 10^-1 Ta deci Ta d Ta 0.1
                     81: .It One Ta 10^0 Ta - Ta - Ta 1
                     82: .It Ten Ta 10^1 Ta deca Ta da Ta 10
                     83: .It Hundred Ta 10^2 Ta hecto Ta h Ta 100
                     84: .It Thousand Ta 10^3 Ta kilo Ta k Ta 1000
                     85: .It Million Ta 10^6 Ta mega Ta M Ta 1000000
1.5       jruoho     86: .It Billion Ta 10^9 Ta giga Ta G Ta 1000000000
1.2       jruoho     87: .It Trillion Ta 10^12 Ta tera Ta T Ta 1000000000000
                     88: .It Quadrillion Ta 10^15 Ta peta Ta P Ta 1000000000000000
                     89: .It Quintillion Ta 10^18 Ta exa Ta E Ta 1000000000000000000
                     90: .It Sextillion Ta 10^21 Ta zetta Ta Z Ta 1000000000000000000000
                     91: .It Septillion Ta 10^24 Ta yotta Ta Y Ta 1000000000000000000000000
1.1       jruoho     92: .El
1.3       wiz        93: .Sh SEE ALSO
                     94: .Xr units 1 ,
1.4       jruoho     95: .Xr strsuftoll 3 ,
1.3       wiz        96: .Xr number 6
1.1       jruoho     97: .Sh STANDARDS
                     98: There have been various attempts to standardize the set of binary prefixes.
                     99: Organizations such as International Electrotechnical Commission
                    100: .Pq Tn IEC
                    101: have proposed new prefixes such as
                    102: .Dq kibi ,
                    103: .Dq mebi ,
                    104: .Dq gibi ,
                    105: and
                    106: .Dq yobi ,
                    107: but the adoption has been slow at best.