asccalc - A Simple Console Calculator
Pretty much a fully featured console calculator. One of the few that makes it easy to use logic operations and different bases.
+ Addition - Subtraction * Multiplication / Divison % Modulo (Remainder) ** raise to the power of... ^^ same as ** & Logical And and same as & | Logical Or or same as | ^ Logical Exclusive-Or xor same as ^ << Logical shift left (arithmetic shift for negative numbers) >> Logical shift right (arithmetic shift for negative numbers)
Numbers can be expressed in many different ways. Here are some examples:
0xFF 0b010101 5 0d5 0755 5.71 5.71E-5 5.71p
As the last example shows, several SI suffixes are available, with their usual meaning:
Comparison Operators (return 1 if true, otherwise 0)
>= Greater or equal <= Less or equal != Not equal == Equal > Greater than < Less than
- Unary minus ~ 1's complement ! Factorial
A statement (i.e. an expression using operators) is evaluated at the end of the line (e.g. when ENTER is pressed) unless the last character of the line was a backslash ('\'), in which case the newline is ignored. Statements can have a trailing semicolon (';') when stand-alone, and must have a trailing semicolon (';') when they are part of a listing (more on that later). Example:
1 + 5 * 7
1 + 5 * 7;
1 + 5 * \ 7
1 + 5 * \ 7;
User-defined variables can be created with the following syntax,
VARIABLE_NAME = STATEMENT
x = 5 * pi;
where the trailing semicolon (';') is optional.
if/else and while flow control is available.
The conditional construct if is as follows, where the 'else LISTING' part is optional,
if CONDITION then LISTING else LISTING fi
For incomplete if statements (i.e. lacking else) a default value of 0 is returned if the condition is false. Otherwise the value of the last expression to be evaluated in a LISTING is returned. The condition can be any statement (see above) that is considered true if it evaluates to a non-zero value. The LISTING is a series of statements delimited by a trailing semicolon (';') or other flow control constructs. After the 'if', a newline can be introduced at any time until the closing 'fi'. Examples:
if (x > 5) then x/5; else x*5; fi if (x > 5) then x/5; fi
The while construct similarly is,
while CONDITION do LISTING done
A default value of 0 is returned if the condition is false. Otherwise the value of the last evaluated expression is returned. The condition can be any statement (see above) that is considered true if it evaluates to a non-zero value. The LISTING is a series of statements delimited by a trailing semicolon (';') or other flow control constructs. After the 'while', a newline can be introduced at any time until the closing 'done'. Examples:
x = 1; while (x < 5) do x = x * 2; done
User-defined functions can be defined using the function keyword. The syntax is as follows:
function NAME(NAMELIST) = LISTING endfunction
The LISTING is a series of statements delimited by a trailing semicolon (';') or flow control constructs. The NAMELIST is a list of comma-separated argument variables to the function. After the 'function' token, a newline can be introduced at any time until the closing 'endfunction'. All user-defined variables assigned in the body of the function are local to the function.
function sum(a,b) = a + b; endfunction function foobar(a,b,c) = x = e * a; x = sum(x, a); root(x, c); endfunction
Comments can either start with // or #
Keywords (i.e. reserved words)
if, then, else, fi, while, do, done, function, endfunction, ls, lsfn, quit, help, mode, and, or, xor
ls Lists all variables lsfn Lists all functions (builtin and user-defined) m <mode> Same as mode <mode> mode <mode> Switches to output mode <MODE>, where mode is one of the following: b - for binary output d - for decimal output h or x - for hexadecimal output o - for octal output quit Exits the program
Check with the 'lsfn' commands for the most up-to-date list.
sqrt(a) Square Root of a cbrt(a) Cubic Root of a root(a,n) n-th root of a abs(a) Absolute value of a ln(a) Natural Logarithm of a log2(a) Logarithm base 2 of a log10(a) Logarithm base 10 of a exp(a) exponential of a sec(a) csc(a) cot(a) cos(a) sin(a) tan(a) acos(a) asin(a) atan(a) atan2(y,x) cosh(a) sinh(a) tanh(a) sech(a) csch(a) coth(a) acosh(a) asinh(a) atanh(a) erf(a) Error function of a erfc(a) Complementary error function of a hypot(x,y) Hypotenuse of x and y, i.e. sqrt(x^2 + y^2) round(a) Round a to nearest integer ceil(a) Round a upwards to nearest integer floor(a) Round a downwards to nearest integer trunc(a) Truncate a to an integer int(a) Same as trunc(a) nextprime(a) Gives the next highest prime number after a gcd(a,b) Greatest common divisor of a and b lcm(a,b) Least common multiple of a and b remfac(a,b) Remove factor b from a bin(a,b) Binomial coefficient (a | b) fib(n) n-th fibonacci number min(a,b,...) Minimum of a,b,... max(a,b,...) Maximum of a,b,... avg(a,b,...) Average of a,b,...
Build and Install
flex (build only) bison (build only) libedit libmpfr libgmp
To build on Ubuntu and Debian:
apt-get install flex bison libedit-dev libmpfr-dev libgmp-dev make gcc
To just use a binary package:
apt-get install libedit2 libgmp10 libmpfr4