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- Short: Postfix Expression Calculator
- Author: Daniel Charles Kovacs
- Uploader: dkovacs@cyberbeach.net
- Type: misc/math
-
- This is a semi-functional postfix expression calculator for Amigados.
-
- What is postfix?
-
- The opposite of infix ;)
-
- Postfix expressions are written differently than regular expressions, but we
- have all done them in the past (as early as grade 1). Here is what I mean:
-
- Normal (infix) math:
-
- 2 + 2 = 4
-
- Postfix
-
- 2
- +2
- --
- 4
-
- Operations always follow the numbers. Consider this evaluation:
-
- (3+4)*(2+3) = 35
-
- it would be written in postfix (for the this program)
-
- 3 4 add 2 3 add mul
-
- The program offers the following operations:
-
- add, subtract, multiply, divide (with zero-checking), negate, absolute
- value, sine, cosine, tangent, inverse tangent, and PI.
-
-
- Usage:
-
- Double click on the postfix icon. A window will open awaiting your input,
- type help and press enter to get a list of operations. Type quit to exit
- the calculator, show to display the result and clear to empty the stack.
-
-
- Distribution:
-
- Give it to anyone, except not for money.
-
- Contact:
-
- Daniel Kovacs
- 106 Main St.
- Lion's Head
- Ontario Canada
- N0H 1W0
-
- (519) 793 4431
- (705) 523 0899
-
- dkovacs@cyberbeach.net
- http://www.cyberbeach.net/~dkovacs
-
-
- ============================= Archive contents =============================
-
- Original Packed Ratio Date Time Name
- -------- ------- ----- --------- -------- -------------
- 28392 11358 59.9% 04-Apr-98 11:22:16 PostFix
- 1263 731 42.1% 04-Apr-98 11:53:40 postfix.readme
- -------- ------- ----- --------- --------
- 29655 12089 59.2% 05-Apr-98 19:15:36 2 files
-