[jira] [Created] (OLINGO-1545) OData V4: Scientific notation value of Edm.Double cannot be processed

["Ramya Vasanth (Jira)" <ji...@apache.org>]

Ramya Vasanth created OLINGO-1545:
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             Summary: OData V4: Scientific notation value of Edm.Double cannot be processed
                 Key: OLINGO-1545
                 URL: https://issues.apache.org/jira/browse/OLINGO-1545
             Project: Olingo
          Issue Type: Bug
          Components: odata4-server
    Affects Versions: (Java) V4 4.8.0
            Reporter: Ramya Vasanth


As per 

    [https://en.wikipedia.org/wiki/Double-precision_floating-point_format#IEEE_754_double-precision_binary_floating-point_format:_binary64]

If a decimal string with at most 15 significant digits is converted to IEEE 754 double-precision representation, and then converted back to a decimal string with the same number of digits, the final result should match the original string*.* If an IEEE 754 double-precision number is converted to a decimal string with at least 17 significant digits, and then converted back to double-precision representation, the final result must match the original number.

The string 5.9999999999999998e-01 parsed back to Double is _equal_ to 0.6.

These validations often fail and POST requests having payloads with values like as 0.5, 0.6, 1.1 will get converted to 5e-1, 5.99999e-1...

The line causing the isue is in Edm.Single and Edm.Double classes

      if (result.isInfinite() || BigDecimal.valueOf(result).compareTo(bigDecimalValue) != 0) {...



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