could not use the full range of double in C#?

Asked Nov 10 '16 at 15:10

Active Nov 10 '16 at 15:21

Viewed 53 times

I could not use the full range of double data type with precession.

My requirement is, I need to increment precession of double data type range within its range. e.g.

double number = 12345678912345678.0;

number = number + 0.00001;

I expect number should be 12345678912345678.00001, but actual result is 12345678912345678.0.

In the snap attached I have a 17 digit ,14 digit and 12 digit keys, For each key I am incrementing some precession number say 0.00001. But this operation did not incrementing the precession for 17 and 14 digit keys .so that I am in trouble using these values in SortedList which does not allow duplicates.

edited Nov 10 '16 at 15:21

Matt Rowland

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asked Nov 10 '16 at 15:10

Phaniram

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because double precision is 15-16 digits. https://msdn.microsoft.com/en-us/library/678hzkk9.aspx – M.kazem Akhgary Nov 10 '16 at 15:12
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Indeed. Look at [decimal](https://msdn.microsoft.com/en-us/library/364x0z75.aspx) instead. – Equalsk Nov 10 '16 at 15:13
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The word is 'precision'. – TaW Nov 10 '16 at 15:13
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There will be a point where you can't even add 1.0 to a double – Thomas Weller Nov 10 '16 at 15:16

could not use the full range of double in C#?

0 Answers0