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java Modulus operator

Babar Saeed
Greenhorn

Joined: Jul 06, 2001
Posts: 13
when i compile the following code
float f = 6.3f % 2.1f;
The answer must be 0.0.
but it's not.
but when i try this code
float f = 8.4f % 2.1f;
the answer is 0.0.
Lucas Richardson
Ranch Hand

Joined: Jul 08, 2001
Posts: 32
There is a loss of precision due to the fact that it can't represent the answer as a power of two. (rather than round, it tells you 2.0999999...). It's representative of the inaccuracy of computers when it comes to floating point numbers.
 
It is sorta covered in the JavaRanch Style Guide.
 
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