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Question

Compare double till precision 2

Answer 1

+1 A:

You could use Math.Abs(dbl1 - dbl2) < 0.01. This will only consider the first two digits after the decimal point.

IVlad 2010-04-21 14:47:53

Doesn't work, rounding screws that up. Example: 1.0049 vs 1.0099

Hans Passant 2010-04-21 15:29:05

@Hans: what do you mean? `Math.Abs(1.0049 - 1.0099) < 0.01` returns true for me (in C# using .net 4.0).

IVlad 2010-04-21 15:59:58

1.0049 prints as "1.00", 1.0099 prints as "1.01", not equal.

Hans Passant 2010-04-21 16:02:52

@Hans: I'm sorry, but I don't see your point. As far as I understand the OPs question, he wants to compare two doubles up until the second digit after the decimal point, and as far as I can tell, this method works fine. What does printing have to do with it?

IVlad 2010-04-21 16:06:18

Answer 2

A:

dbl1.ToString("g2", CultureInfo.InvariantCulture).Equals( dbl2.ToString("g2", CultureInfo.InvariantCulture))

is working for me. I was just looking for any other alternative.

Ram 2010-04-28 13:19:18

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Compare double till precision 2

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