jskcalc

A RPN calculator.

This is just a first pass. It needs to be cleaned up.

Each cell can be a float (f64), "word" (i64, but treated like bits), date, or string.

To quit, q or ^C.

Quick Example

45 d2r dup sin sq swap cos sq + p
N 1.0
2 sqrt 2 / 45 d2r cos - p
N 0.0
1 2 3 ps + ps - ps 5 p * p ps
Stack is 5 entries deep
 0: Num(3.0)
 1: Num(2.0)
 2: Num(1.0)
 3: Num(0.0)
 4: Num(1.0)

Stack is 4 entries deep
 0: Num(5.0)
 1: Num(1.0)
 2: Num(0.0)
 3: Num(1.0)

Stack is 3 entries deep
 0: Num(-4.0)
 1: Num(0.0)
 2: Num(1.0)

N 5.0
N -20.0
Stack is 3 entries deep
 0: Num(-20.0)
 1: Num(0.0)
 2: Num(1.0)

clr
0xfeba74923f p 9876543 w p ps & p pl ps
W b0000 0000  0000 0000  0000 0000  1111 1110  1011 1010  0111 0100  1001 0010  0011 1111
W b0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  1001 0110  1011 0100  0011 1111
Stack is 2 entries deep
 0: Word(9876543)
 1: Word(1094049894975)

W b0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0001 0100  1001 0000  0011 1111
W b0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0001 0100  1001 0000  0011 1111
W x00 00 00 00 00 14 90 3F
W 1347647i64
W 1347647u64
Stack is 1 entries deep
 0: Word(1347647)

0xaa dup p 0x55 dup p rot ps
W b0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  1010 1010
W b0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0101 0101
Stack is 5 entries deep
 0: Word(85)
 1: Word(170)
 2: Word(85)
 3: Word(170)
 4: Word(1347647)

& rot swap p drop p drop p
W b0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  1010 1010
W b0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0101 0101
W b0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0000 0000  0000 0000

2024-08-21 p
D Date { year: 2024, month: Aug, day_of_month: 21 }
dup dow p drop
S "Wednesday"
dup doy p drop
N 234.0
dup 78 +days p drop
D Date { year: 2024, month: Nov, day_of_month: 7 }
dup 178 +days p drop
D Date { year: 2025, month: Feb, day_of_month: 15 }

clr
'ustsp 'ustbsp ps conv ps
Stack is 2 entries deep
 0: Str("ustbsp")
 1: Str("ustsp")

Stack is 1 entries deep
 0: Num(0.33333333333333337)

q

Stack

drop : (1 -- )

swap : (1 2 -- 2 1)

rot : (1 2 3 -- 2 3 1)

dup : duplicates the top of the stack

clr : clear the stack

Printing

ps : prints the stack

p : prints the top of the stack

pl : prints a more detailed version of the top of the stack

pd : prints and drops the top of the stack

strings

conv : Experimental support in parsing the GNU Units file and doing conversions

floats

To push onto the stack, just enter the number. For details see the rust f64 grammar.

binary operations

• +
• -
• *
• /
• pow
• atan2
• hypot

unary operations

• sin
• cos
• tan
• asin
• acos
• atan
• sinh
• cosh
• tanh
• asinh
• acosh
• atanh
• d2r
• r2d
• 1/
• recip
• ln
• ln1+
• log10
• log2
• exp
• exp-1
• sqrt
• cbrt
• sq
• cb
• abs
• ceil
• floor

constants

• pi
• e
• sqrt2
• ln2
• ln10
• tau
• pi/2
• pi/4

misc

• dms2dd
• dd2dms

word

To push a word, either push a hex string starting with 0x or push an float then issue w. The integer portion of the float is considered as the word.

binary operations

• *
• /
• mod
• &
• ^
• |
• sl
• lsr
• asr

unary operations

• ~

date

To push a date, enter a string matching the regular expression \d{4}-\d{2}-\d{2}

binary operations

unary operations

• dow
• doy
• days