# Concalc

CONCALC - Text-based calculator

echo "sin(pi/4)" | concalc

0.707106781186547524

CONCALC(1) User Commands CONCALC(1)

NAME

```      concalc - console calculator
```

SYNOPSIS

```      concalc [options] "expression"
```
```      concalc -m script "path"
```

DESCRIPTION

```      concalc  calculates  the  given  input term and returns the result as text.  Please use
will have problems with the shell interpretor.  If  you  give  concalc  more  than  one
expression, all expression will be put together.
```

CALCULATION SYNTAX

```      standard calculations
2*(3+4/9)^3
```
```      standard operations
+ - * / ^ % sin cos tan asin acos atan sinh cosh tanh asinh acosh atanh ln log &
| ! && || ~ >> << x rnd sqrt curt root integ d/dx
```
```      sqare root and cubic root
sqrt12 curt8
```
```      trigonometric functions and logarithms
sin3.64+ln5
```
```      other roots
fourth root of nine: 4root9
```
```      differential calculation
differential calculation of 2x^2-3x+3 at x=9: d/dx(2x^2-3x+3,9)
```
```      integration
integration of sinx+cosx between -1 and 3.2: integ(sinx+cosx,-1,3.2)
```
```      set variables
save the result of a calculation in variable A: 12*45/2->A
```
```      recall variables
multiply the saved value with 2: A*2
```
```      use last result
The last result is saved in the answer memory: ans+1
```

CONSTANTS

```      e      euler constant
```
```      pi     pi; example: sin(pi/2)
```

NUMBERS

```      standard
12.34
```
```      with exponent
12.23e-5
```
```      complex
12i-5
```

OPTIONS

```      -o, --output [output length]
The argument is a number between 2 and the maximal possible output length  (nor‐
mally 18).
```
```      -m, --mode [calculator mode]
The  mode  can  be std (default, normal scientific calculatons), base (for logic
functions and base-n calculatons) or script (for executing scripts). In  script‐
ing mode, the last argument must be the path to the script file.
```
```      -c, --complex
This  option  enables complex numbers for the calculation. They are switched off
by default.
```
```      -b, --base [calculator base]
The argument must be one of  hex  (hexadecimal),  dec  (decimal,  default),  oct
(octal) and bin (binary). This option can only be used when -m base is set.
```
```      -a, --angle [angle type]
```
```      -v, --version
Output the version of Concalc.
```
```      -h, --help
Outputs a short help.
```

SCRIPTING

```      The script interpreter of calc uses a C-like programming syntax.  The following command
are supported.
```
```      if expression
```
```             if(condition)
```
```               command for condition true;
```
```             else command for condition false;
```
```      while loop
```
```             while(condition)
```
```               command that is run while condition is true;
```
```      for loop
```
```             for(initialisation; condition; count-command)
command that is run while condition is true;
```
```      print command
```
```             print( output to print out );
```
```      getline command
```
```             getline; // read a text line from stdin and returns this text
```
```      getkey command
```
```             getkey; // return the key pressed by the user
// blocks until the user presses any key
```
```      keystate command
```
```             keystate; // returns the key pressed by the user or 0 if no key was pressed
// nonblocking
```
```      sleep command
```
```             sleep( time in microseconds ); //Script is stops for the given time
```
```      compare operators
```
```             ==, != equal, unequal
```
```             >=, <=, >, < greather or equal, less or equal, greather, less
```
```      set operators
```
```             -> calculator set operator
```
```             = C-like set operator
```
```      type converting
```
```             (float) floating point value
```
```             (int) integer value
```
```             (string) text value
```
```             (bool) boolean value
```

BUGS

```      No bugs known!
```
```      If you find one, please report it by e-mail to the author.
```

AUTHOR

```      Rainer Strobel <rainer1223@users.sourceforge.net>
```

```      http://extcalc-linux.sourceforge.net
```

Linux APRIL 2007 CONCALC(1)