'CAL
Evaluates mathematical and geometric expressions.
CAL is a calculator that evaluates expressions (point, real, or integer).
You can use it alone at the command prompt or as a Transparent Command.
You can use 'CAL in any command that accepts points, vectors, or numbers.
For example, enter a command such as LINE, then enter 'CAL at any prompt
where you want to calculate the next point. The following prompt appears:
>> Expression:
Type the expression and press Enter.
The line is drawn to the point calculated, and the following message appears:
Resuming LINE command.
CAL evaluates expressions according to standard mathematical rules of
precedence.
1
Expressions in parentheses, starting with the innermost set
2
Operators in standard order: exponents first, multiplication and
division second, and addition and subtraction last
3
Operators of equal precedence from left to right
A numeric expression is a collection of real numbers and functions combined
with the mathematical operators () ^ * / + -.
A vector expression is a collection of points, vectors, numbers, and
functions combined with the operators () & * / + -.
Measurements in feet-inches are converted to inches for numeric calculations.
Angles are in decimal degrees in the following format:
degdmin'sec"
You must enter 0 and d (0d) when entering
an angle that is less than 1 degree (minutes and seconds only). You can
omit the minutes or seconds if they are zero.
You can define variables, which are remembered throughout a session.