Problems With Large Numbers (eg. 1^10)

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QuantumPixel

14

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Joined: 14th Feb 2010

Location: Alabama, USA

Posted: 26th Apr 2012 05:56

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Greetings!

The program that I am working on uses very large numbers, most of which are raised to a power of ^22 or more. Yet I am having trouble getting such numbers to work correctly.

Example:

+ Code Snippet

M as Double Float

M = 1.0 * 10^10

Print M

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If I raise M to any power up to 10^9, it displays correctly as "1e+009." However, if I raise it to a power of 10^10 or greater, it displays as "-2.14748e+009."

This baffles me! Any insight into what causes this and how I can make it so that my program correctly represents large numbers would be of immense help.

Thanks!

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Cybermind

Valued Member

21

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Joined: 28th Nov 2002

Location: Denmark

Posted: 26th Apr 2012 12:43

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This is from the help menu, does it apply to your problem?

DATA TYPE RANGES

Each type of data has a maximum and minimum value known as the range. It is important to know these ranges, especially when dealing with smaller datatypes. Below is a list of datatypes and their ranges:

INTEGER Range : –2,147,483,648 to 2,147,483,647
REAL Range : 3.4E +/- 38 (7 digits)
BOOLEAN Range : 0 to 1
BYTE Range : 0 to 255
WORD Range : 0 to 65535
DWORD Range : 0 to 4,294,967,295
DOUBLE INTEGER Range : –9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
DOUBLE FLOAT Range : 1.7E +/- 308 (15 digits)

The byte chrunchers are coming...
DIVIDING BY ZERO/BECAUSE WE SUCK...

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Jaeg

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Joined: 16th Mar 2006

Location: Indiana

Posted: 26th Apr 2012 15:54 Edited at: 26th Apr 2012 15:55

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In some languages if you exceed the data range they'll wrap back around to their lowest value. Try using a REAL or DOUBLE.

Go ahead. Walk into Mordor.

Ball State University - Computer Science Major

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Chris Tate

DBPro Master

15

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Joined: 29th Aug 2008

Location: London, England

Posted: 26th Apr 2012 16:28

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Hi, the wierd problem is with the use of an integer calculation: M = 1.0 * 10 ^ 10

Use a floating point calculation instead: M = 1.0 * 10.0 ^ 10.0

Or just M = 10.0 ^ 10.0

+ Code Snippet

` Declare
M as Double Float
N as Double Float
O as Double Float
I as Double Integer

` Set
N = 10 ^ 10
M = 10000000000
O = 10.0 ^ 10.0
I = M

` Output
Print "N = 10 ^ 10 = "; N
Print "M = "; M
Print "O = 10.0 ^ 10.0 = "; O
Print "I = Int(M) = "; I

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