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[src/trunk]: src/usr.bin/units mdoc'ify. Sort sections.
details: https://anonhg.NetBSD.org/src/rev/6d8c5583cbd9
branches: trunk
changeset: 519464:6d8c5583cbd9
user: wiz <wiz%NetBSD.org@localhost>
date: Tue Dec 18 01:06:09 2001 +0000
description:
mdoc'ify. Sort sections.
diffstat:
usr.bin/units/units.1 | 191 +++++++++++++++++++++++++++++--------------------
1 files changed, 113 insertions(+), 78 deletions(-)
diffs (239 lines):
diff -r 1ec73d91e245 -r 6d8c5583cbd9 usr.bin/units/units.1
--- a/usr.bin/units/units.1 Tue Dec 18 00:51:16 2001 +0000
+++ b/usr.bin/units/units.1 Tue Dec 18 01:06:09 2001 +0000
@@ -1,38 +1,39 @@
-.\" $NetBSD: units.1,v 1.9 2001/12/01 16:43:26 wiz Exp $
-.TH UNITS 1 "14 July 1993"
-.SH NAME
-units - conversion program
-.SH SYNTAX
-.B units
-[-f filename] [-qv] [from-unit to-unit]
-.SH SUMMARY
-.TP 4
-.B -f filename
+.\" $NetBSD: units.1,v 1.10 2001/12/18 01:06:09 wiz Exp $
+.Dd December 18, 2001
+.Dt UNITS 1
+.Os
+.Sh NAME
+.Nm units
+.Nd conversion program
+.Sh SYNOPSIS
+.Nm
+.Op Fl f Ar filename
+.Op Fl qv
+.Op Ar from-unit to-unit
+.Sh DESCRIPTION
+The units program converts quantities expression in various scales to
+their equivalents in other scales. The units program can only
+handle multiplicative scale changes. It cannot convert Centigrade
+to Fahrenheit, for example.
+.Pp
+The following options are supported:
+.Bl -tag -width "from-unit to-unit" -offset indent
+.It Fl f Ar filename
Specifies the name of the units data file to load.
-.LP
-.TP 4
-.B -q
+.It Fl q
Suppresses prompting of the user for units and the display of statistics
about the number of units loaded.
-.LP
-.TP 4
-.B -v
+.It Fl v
Prints the version number.
-.LP
-.TP 4
-.B from-unit to-unit
+.It Ar from-unit Ar to-unit
Allows a single unit conversion to be done directly from the command
line. No prompting will occur. The units program will print out
only the result of this single conversion.
-
-.SH DESCRIPTION
-The units program converts quantities expression in various scales to
-their equivalents in other scales. The units program can only
-handle multiplicative scale changes. It cannot convert Centigrade
-to Fahrenheit, for example. It works interactively by prompting
-the user for input:
-.nf
-
+.El
+.Pp
+.Nm
+works interactively by prompting the user for input:
+.Bd -literal
You have: meters
You want: feet
* 3.2808399
@@ -42,83 +43,117 @@
You want: gallons
* 0.00026417205
/ 3785.4118
-
-.fi
-Powers of units can be specified using the '^' character as shown in
-the example, or by simple concatenation: 'cm3' is equivalent to 'cm^3'.
+.Ed
+.Pp
+Powers of units can be specified using the
+.Dq \&^
+character as shown in the example, or by simple concatenation:
+.Dq cm3
+is equivalent to
+.Dq cm^3 .
Multiplication of units can be specified by using spaces, a dash or
-an asterisk. Division of units is indicated by the slash ('/').
+an asterisk. Division of units is indicated by the slash
+.Pq Sq \&/ .
Note that multiplication has a higher precedence than division,
-so 'm/s/s' is the same as 'm/s^2' or 'm/s s'.
+so
+.Dq m/s/s
+is the same as
+.Dq m/s^2
+or
+.Dq "m/s s" .
If the user enters incompatible unit types, the units program will
print a message indicating that the units are not conformable and
it will display the reduced form for each unit:
-.nf
-
+.Bd -literal
You have: ergs/hour
You want: fathoms kg^2 / day
conformability error
2.7777778e-11 kg m^2 / sec^3
2.1166667e-05 kg^2 m / sec
-
-.fi
-.LP
+.Ed
+.Pp
The conversion information is read from a units data file. The default
file includes definitions for most familiar units, abbreviations and
metric prefixes. Some constants of nature included are:
-.in +4m
-.ta
-.ta 9m
-.nf
-
-pi ratio of circumference to diameter
-c speed of light
-e charge on an electron
-g acceleration of gravity
-force same as g
-mole Avogadro's number
-water pressure per unit height of water
-mercury pressure per unit height of mercury
-au astronomical unit
-
-.fi
-.in -4m
-\'Pound' is a unit of mass. Compound names are run together
-so 'poundforce' is a unit of force. British units that differ from their
-US counterparts are prefixed with 'br', and currency is prefixed with
-its country name: 'belgiumfranc', 'britainpound'. When searching for
+.Bl -tag -width mercury -compact -offset indent
+.It pi
+ratio of circumference to diameter
+.It c
+speed of light
+.It e
+charge on an electron
+.It g
+acceleration of gravity
+.It force
+same as g
+.It mole
+Avogadro's number
+.It water
+pressure per unit height of water
+.It mercury
+pressure per unit height of mercury
+.It au
+astronomical unit
+.El
+.Pp
+.Dq pound
+is a unit of mass. Compound names are run together
+so
+.Dq poundforce
+is a unit of force. British units that differ from their
+US counterparts are prefixed with
+.Dq br ,
+and currency is prefixed with
+its country name:
+.Dq belgiumfranc ,
+.Dq britainpound .
+When searching for
a unit, if the specified string does not appear exactly as a unit
-name, then the units program will try to remove a trailing 's' or
-a trailing 'es' and check again for a match.
-.LP
+name, then the units program will try to remove a trailing
+.Dq s
+or a trailing
+.Dq es
+and check again for a match.
+.Pp
All of these definitions can be read in the standard units file, or you
can supply your own file. A unit is specified on a single line by
giving its name and an equivalence. One should be careful to define
new units in terms of old ones so that a reduction leads to the
-primitive units which are marked with '!' characters.
+primitive units which are marked with
+.Sq \&!
+characters.
The units program will not detect infinite loops that could be caused
by careless unit definitions.
-.LP
+.Pp
Prefixes are defined in the same was as standard units, but with
a trailing dash at the end of the prefix name.
-.SH BUGS
-.LP
-The effect of including a '/' in a prefix is surprising.
-.LP
+.Sh FILES
+.Bl -tag -width /usr/share/misc/units.lib -compact
+.It Pa /usr/share/misc/units.lib
+the standard units library
+.El
+.Sh AUTHORS
+.An Adrian Mariano Aq adrian%cam.cornell.edu@localhost
+or
+.Aq mariano%geom.umn.edu@localhost
+.Sh BUGS
+The effect of including a
+.Sq \&/
+in a prefix is surprising.
+.Pp
Exponents entered by the user can be only one digit.
You can work around this by multiplying several terms.
-.LP
-The user must use | to indicate division of numbers and / to
-indicate division of symbols. This distinction should not
+.Pp
+The user must use
+.Sq \&|
+to indicate division of numbers and
+.Sq \&/
+to indicate division of symbols. This distinction should not
be necessary.
-.LP
+.Pp
The program contains various arbitrary limits on the length
of the units converted and on the length of the data file.
-.LP
+.Pp
The program should use a hash table to store units so that
it doesn't take so long to load the units list and check
for duplication.
-.SH FILES
-/usr/share/misc/units.lib - the standard units library
-.SH AUTHOR
-Adrian Mariano (adrian%cam.cornell.edu@localhost or mariano%geom.umn.edu@localhost)
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