Solved

What is -3.402823466E+38?

Posted on 2014-12-16
2
534 Views
Last Modified: 2014-12-16
I have seen it more thann once, but today I resolved to better understand it.

The minimum signed value for a "float-ed" value in MySQL is documented as "-3.402823466E+38." What is the "E+38" thing?

I've seen this in Excel as well as in databases and I've always understood it to mean a large value, or a large number of decimal points, but I wanted to "know," hence my appeal to the experts.

What does "E+38" mean?
0
Comment
Question by:brucegust
2 Comments
 
LVL 35

Accepted Solution

by:
Kimputer earned 500 total points
ID: 40502932
Add the amount in zeros (or move the dot)
-3.4E2 would be -340 (2 operations, move dot once, add zero after that)
-3.402823466E+10 = -34028234660
and E+38 applies the same rule (add 28 more zeroes to my last answer)
You see this notation in calculators and written in computer language.
In Math class it's 3.4 x 10(number) where number is smaller and in superscript. If the number is negative though, the zeroes and dots go the other way (0.2E-2 = 0.002)
Since the whole point of it all is to write it in a compact manner, writing it down like 3000E+10 makes no sense, and 3.0E+13 should have been written)
0
 

Author Comment

by:brucegust
ID: 40503004
Perfect! Thanks!
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

This article will guide you to convert a grid from a picture into Excel format using Microsoft OneNote and no other 3rd party application.
Since pre-biblical times, humans have sought ways to keep secrets, and share the secrets selectively.  This article explores the ways PHP can be used to hide and encrypt information.
This Micro Tutorial will demonstrate how to use a scrolling table in Microsoft Excel using the INDEX function.
This Micro Tutorial will demonstrate how to create pivot charts out of a data set. I also added a drop-down menu which allows to choose from different categories in the data set and the chart will automatically update.

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now