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Float, Double and Decimal: do you know the differences
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Float, Double and Decimal: do you know the differences
http://www.programmersheaven.com/user/pheaven/blog/191-Float-Double-and-Decimal-do-you-know-the-differences/
In other applications, you don't care about exact results, but you are interested in having an answer that is correct to a certain number of significant digits. This is the case in experimental physics, for example. When you make a measurement of something, you can only measure it as accurately as your equipment will allow you. Therefore, you have an inherent error in that value already, which is going to cascade through any calculations you do with it. This means that while your computed answer may be 5.1826, you may know that the values this answer was calculated from were only accurate to three significant digits, and so the last two digits in this result (the 0.0026) don't matter. If there is a computational error in them, so be it - it's not going to hurt us.
ASP.NET > Tips and Tutorials
Mar 23, 2008
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