What's the best way to compare doubles? I am testing a method that should
return the fraction 2/9. For my expected result, I entered 0.222222 (a six
decimal place representation of 2/9). The CLR resolved the fraction to full
precision, so I got this error back from my test:
expected:<0.222 222>
but was:<0.22222222 2222222>
For my purposes, the two values are equal.
The Double.Epsilon constant is too small to use for an epsilon comparison
here. So, is my only option to create my own epsilon constant as 0.00001? Or
is there another solution to this problem that I am missing? Thanks in
advance
David Veeneman
Foresight Systems
1  2058 
Test whether they are equal to within 0.001 or whatever you consider the
tolerance to be. That's the only way.
Remember that they could differ in either direction, so test the absolute
value of the difference.
"David Veeneman" <da****@nospam. com> wrote in message
news:OL******** ******@TK2MSFTN GP14.phx.gbl... What's the best way to compare doubles? I am testing a method that should
return the fraction 2/9. For my expected result, I entered 0.222222 (a six
decimal place representation of 2/9). The CLR resolved the fraction to
full precision, so I got this error back from my test:
expected:<0.222 222>
but was:<0.22222222 2222222>
For my purposes, the two values are equal.
The Double.Epsilon constant is too small to use for an epsilon comparison
here. So, is my only option to create my own epsilon constant as 0.00001?
Or is there another solution to this problem that I am missing? Thanks in
advance
David Veeneman
Foresight Systems This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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