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Q135115: PRB: VAL() Does Not Return Error When Number Is Out of Range

Article: Q135115
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0
Operating System(s): 
Keyword(s): 
Last Modified: 15-FEB-2000

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, version 3.0 
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SYMPTOMS
========

Assigning a variable a number that is out of the allowed range for double
precision numbers doesn't generate an error.

STATUS
======

Microsoft is researching this behavior and will post new information here in the
Microsoft Knowledge Base as it becomes available.

MORE INFORMATION
================

Code to Reproduce Behavior
--------------------------

Create and run this program:

  CREATE TABLE test (numeric N(10,5), float F(10,5), ;
     double D, currency M, integer I)
  APPEND BLANK
  nBig=VAL('1E+700')  && largest double precision number has an exp of 308

  ? TYPE ('nBig')             &&  prints 'N'
  ? nBig                      &&  prints ********
  ? STR(nBig,203,7)           && prints 203 *'s
  REPLACE numeric WITH nBig   && Numeric overflow. Data was lost
  REPLACE float WITH nBig     && Numeric overflow. Data was lost
  REPLACE double WITH nBig    && data type mismatch
  REPLACE currency WITH nBig  && data type mismatch
  REPLACE integer WITH nBig   && Numeric overflow. Data was lost
  ? LOG(nBig)                 && prints 20 asterisks

Additional query words: 3.00 VFoxWin

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Keywords          :  
Technology        : kbVFPsearch kbAudDeveloper kbVFP300
Version           : WINDOWS:3.0

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