Extcalc - Scientific Calculator


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Calc - Documentation

1. General Information

2. Installation

3. Usage

3.1 Parameters

3.2 Syntax

3.3. Scripting

5. Additional Information

1. General Information

Calc is a calculator for the Linux console. It should also work on all other unix systems. Calc is just the parser-algorithm of extcalc packed into a simple console program. You can use it if you have need a calculator in your shell.

Calc is still alpha, but the main features should work now.
This documentation refers to Calc version 0.8.5.


2. Installation

1. Unpack package: "tar -xzf calc-0.8.5.tar.gz"
2. Change directory: "cd calc-0.8.5"
3. Run configure: "./configure"
4. Compile program: "make"
5. Become root: "su"
6. Install files: "make install"

If all steps run without errors, you will be able to start calc if you type calc and any calculation you want into your console.

3. Usage

3.1 Parameters

The following command line options will work in this version:
 -m mode
--mode mode
Set calculator mode.
This can be std for normal scientific calculations or base for logic operations and base-n calculations or script for running scripts
if you choose script mode, the last agrument must be the path to the script file, not the script itsself.

Example:
calc -m base "10 | 5"
 -b base
--base base
Set the base for base-n calculations.
base must be one of bin, hex, dec or oct. The default value is dec for decimal.
This option can only be used when mode is set to base.
Example:
calc -m base -b bin "100101 | 110111"
 -a angle type
 --angle angle type
Set angle type for calculation
Arguments: deg (degrees), rad (radiant), gra (grade)
Example:
calc -a deg "sin30"
 -c
 --complex
Enable complex numbers
 -o output length
 --output output length
Set maximum digits of output
Arguments: number between 2 and the max. possible length (normally 18)
Example:
calc -o 5 "sqrt2"
 -h
 --help
Print a short help text.
 -v
 --version
Print version info

3.2 Syntax

Input calculations into calc:
calc "input"
Example: calc "2*(3+4/9)^3"

sqare root:
"sqrt value"
Example 1: sqrt12
Example 2: sqrt(12*(3+3.2²))

trigonometric functions and logarithms:
"function value"
Example: sin3.64+ln4.86
Known functions:
sin
cos
tan
asin
acos
atan
sinh
cosh
tanh
asinh
acosh
atanh
ln
log
lg

other roots:
exponent root value
Example (fourth root of nine): 4root9

differential calculation:
d/dx(function,x-value)
Example: (differential calculation of 2x^2-3x+3 at x=9): d/dx(2x^2-3x+3,9)

integration:
integ(function,start-value,end-value)
Example (integration of sinx+cosx between -1 and 3.2): integ(sinx+cosx,-1,3.2)

Variables:
It is possible to save results in 26 variables, which are represented by the letter A - Z.
Set variable:
asin0.45 ->A
Recall variable:
sinA

Number formats:
normal floating point:
12345
-124.35
-4.67e-6
complex numbers:
-2i
2.5+6i
-3.5i+4.2
with different bases (only integer values):
hex0F3C6
bin10011011
oct43532

4. Script Programming

If you want to run a script, the script must be stored in a seperate file. To run the script, use the following command:
calc -m script "path"

The script language is the same as described in the Extcalc documentation.
If you need a description of the language or some example files, please look at the description of Extcalc.

5. Additional Information

This version of Calc is also tested at 64-bit-Systems (AMD Opteron). It should work on every CPU and on all standard Unix Systems but it is mainly programmed for Linux.
The precisision of the Calculator is similar to the values mentioned in the documentation of Extcalc because it uses the same calculation code.





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