16 Database Command Syntax

unit definition

Define a regular unit.

prefix- definition

Define a prefix.

funcname(var) units=[in-units,out-units] domain=[x1,x2] range=[y1,y2] definition(var) ; inverse(funcname)

Define a nonlinear unit or unit function. The three optional keywords units=, range= and domain= can appear in any order. The definition of the inverse is optional.

tabname[out-units] pair-list

Define a piecewise linear unit. The pair list gives the points on the table listed in ascending order.

!endlocale

End a block of definitions beginning with ‘!locale’

!endutf8

End a block of definitions begun with ‘!utf8’

!endvar

End a block of definitions begun with ‘!var’ or ‘!varnot’

!include file

Include the specified file.

!locale value

Load the following definitions only of the locale is set to value.

!message text

Display text when the database is read unless the quiet option (-q) is enabled.

!set variable value

Sets the environment variable, variable, to the specified value only if it is not already set.

!unitlist alias definition

Define a unit list alias.

!utf8

Load the following definitions only if units is running with UTF-8 enabled.

!var variable value-list

Load the following definitions only if the environment variable, variable is set to one of the values listed on the space separated value list. If variable is not set then units prints an error message and ignores the following definitions.

!varnot variable value-list

Load the following definitions only if the environment variable, variable is not set to one of the values listed on the space separated value list. If variable is not set then units prints an error message and ignores the following definitions.