The objective in this project is to build a complete, polished, but small product: A reverse polish notation calculator in the style of a unix command line tool.
- Pipelining feature
- Major refactoring of
parserandrun commandsmethods - Fix
display_modeswitching - Conditional operator :
?: - Networking operators
python-3.6+ and pip
Use the python package manager tool pip to install package rpn-calc from source repository
pip install git+https://github.com/karimov/rpn-cal.gitAs a standard unix-like command line tools, the rpn-calc supports different modes of user experience as well.
rpn Launch in interactive mode
rpn [expression] Evaluate a one-line expression
RC FILE
rpn will execute the contents of ~/.rpnrc at startup if it exists.
EXAMPLES
rpn 1 2 + 3 + 4 + 5 + => 15
rpn pi cos => -1.0
rpn => interactive mode
For example, a programmer working on a low level project might expect binary and hex input/output:
$ rpn
> bin
> 0xaa55
0b1010101001010101 > 2 |
0b1010101001010111 > 1 ~ &
0b1010101001010110 >
And someone interested in factorials may expect more than the usual level of precision:
$ rpn
> 50 fact
30414093201713378043612608166064768844377641568960512000000000000 >
As of current version of rpn-calc supports following set of functionality.
Arithmetic Operators
+ Add
- Subtract
* Multiply
/ Divide
cla Clear the stack and variables
clr Clear the stack
clv Clear the variables
! Boolean NOT
!= Not equal to
% Modulus
++ Increment
-- Decrement
Bitwise Operators
& Bitwise AND
| Bitwise OR
^ Bitwise XOR
~ Bitwise NOT
<< Bitwise shift left
>> Bitwise shift right
Boolean Operators
&& Boolean AND
|| Boolean OR
^^ Boolean XOR
Comparison Operators
< Less than
<= Less than or equal to
== Equal to
> Greater than
>= Greater than or equal to
Trigonometric Functions
acos Arc Cosine
asin Arc Sine
atan Arc Tangent
cos Cosine
cosh Hyperbolic Cosine
sin Sine
sinh Hyperbolic Sine
tanh Hyperbolic tangent
Numeric Utilities
ceil Ceiling
floor Floor
round Round
ip Integer part
fp Floating part
sign Push -1, 0, or 0 depending on the sign
abs Absolute value
max Max
min Min
Display Modes
hex Switch display mode to hexadecimal
dec Switch display mode to decimal (default)
bin Switch display mode to binary
oct Switch display mode to octal
Constants
e Push e
pi Push Pi
rand Generate a random number
Mathematic Functions
exp Exponentiation
fact Factorial
sqrt Square Root
ln Natural Logarithm
log Logarithm
pow Raise a number to a power
Networking
hnl Host to network long
hns Host to network short
nhl Network to host long
nhs Network to host short
Stack Manipulation
pick Pick the -n'th item from the stack
repeat Repeat an operation n times, e.g. '3 repeat +'
depth Push the current stack depth
drop Drops the top item from the stack
dropn Drops n items from the stack
dup Duplicates the top stack item
dupn Duplicates the top n stack items in order
roll Roll the stack upwards by n
rolld Roll the stack downwards by n
stack Toggles stack display from horizontal to vertical
swap Swap the top 2 stack items
Macros and Variables
macro Defines a macro, e.g. 'macro kib 1024 *'
x= Assigns a variable, e.g. '1024 x='
Other
help Print the help message
exit Exit the calculator
React
Typescript
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