Firstly, is it fully supported to increment by floating values?
What level of floating-point precision is maintained?
Firstly, is it fully supported to increment by floating values? What level of floating-point
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Firstly, is it fully supported to increment by floating values?
What level of floating-point precision is maintained?
MongoDB does support incrementing by floating point values. This will cause the stored value to be converted to floating point if it is currently some other numeric type, which can lead to rounding errors if the previous value was a very large 64-bit integer.
All of the standard caveats involving floating point numbers apply. MongoDB, like JavaScript interpreters in web browsers, stores IEEE double precision (64-bit) floating point values. These values have 53 bits of precision. Intermediate calculations may be computed using 80-bit long doubles, but the final result is always stored as a 64-bit double precision floating point value.