Concalc

CONCALC - Text-based calculator

echo "sin(pi/4)" | concalc

0.707106781186547524

Evaluate the integral of the function sin x from 0 to pi/3:

echo "integ(sinx,0,pi/3)" | concalc -o 10

0.5

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] The argument must be one of deg (degrees), rad (radiant), gra (grade).

-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 

SEE ALSO http://extcalc-linux.sourceforge.net

Linux                                    APRIL 2007                                CONCALC(1)