readme.txt

一个VB小程序,能够进行大数的计算,可以作为学习的参考

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Subject: Readme file for the RPN large-integer calculator
Author : Sjoerd.J.Schaper - [e-mail]
Date   : 12-27-2004
Code   : Visual Basic for Windows 5.0 DLL demo
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To run this demo
1) Copy all files to directory C:\Temp, including the three
 common files "bignumVB.dll", "bignumVB.bi" and "PrintFun.bas".
2) Open projectfile "RPNCalc.vbp" in the Visual Basic 5.0
 programming environment and press F5 to start.
3) Note there are no {digit} and {enter} buttons on the form:
 all data entry is done with the numeric keypad.
 Toggle [Num Lock] On, enter numbers with the digit keys,
 separate multiple numbers with [Enter], and press
 an operator button to process the bottom of the stack.
 That's all there is to Reverse Polish (or postfix) Notation (RPN)!
4) Some operations might take forever for big numbers:
 press F1 or [Alt]+R; B to break-off.
5) Press F4 or [Alt]+R; Q to quit the program.

 See file "RPNCalc.html" for a description of all functions.
 Though {a/b} {1/a} and {funit} write data in decimal format,
 this calculator does not operate on decimal fractions!

 The project expects primelist "primflgs.bin" in its working
 directory, please create with "PrimList.vbp", if you haven't already.

 Learn more about RPN at
   http://www.hpmuseum.org/rpn.htm


Examples

 To compute the sum of 2 and 3, key in
 2 [Enter]
 3 {+}
 and find the result in the display.

 {clear}
 Computing the golden ratio phi to a few hundred decimals is nearly
 as simple. Key in
 1350 {fibo}
 1351 {fibo}
 to push two large consecutive Fibonacci numbers on the stack,
 then press {a/b} to display the decimal expansion of their ratio.
 Input 50 and press {confrc} {a/b} for a much simpler approximation.

 {clear}
 Fibonacci fact: F_gcd(m, n) = gcd(F_m, F_n), for example
 1717 [Enter]
 1919 {sto}
 {gcd} {fibo}
 [Enter] [Enter] equals
 {rcl} {fibo} {x