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Problem Report 0425 Details

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This page provides all information on Problem Report 0425.

Report 0425 Actions

    Problem Report Number 0425
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Rejected (REJ)
    Problem Resolution ID REJ.X.0044
    Raised 1993-11-17 08:00
    Updated 2003-03-13 08:00
    Published null
    Product Standard Internationalised System Calls and Libraries (XPG4)
    Certification Program The Open Brand certification program
    Test Suite VSX4 version 4.3.2
    Test Identification ANSI.os/maths/pow 8
    Problem Summary PG4R.044 The pow() in AIX 3.2.5 has implemented the XPG4 extensions which state: If y is zero and x is NaN, either a value of 1.0 is returned, or Nan is returned and errno may be set to EDOM. AIX pow(NaN,0.0) ...
    Problem Text
    The pow() in AIX 3.2.5 has implemented the XPG4 extensions which state:

    If y is zero and x is NaN, either a value of 1.0 is returned, or Nan is
    returned and errno may be set to EDOM.

    AIX pow(NaN,0.0) returns a 1.0 and no error.

    In the Test Description, it states in XPG4 mode pow(Nan,0.0) may return
    1.0 instead of NaN.
    Test Output
    RETURN VALUES: expected: NaNQ, observed: 1
    Bit Representation: expected value: \177\370\000\000\000\000\000\000
    Bit Representation: observed value: \077\360\000\000\000\000\000\000
    ERRNO VALUES: expected: 33 (EDOM), observed: 0 (NO ERROR)

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    The test suite seems to have been executed in XPG3 mode, thus this cannot
    be dealt with through the XPG4 interpretations process.

    The basis for the request relies on a specific change in the text between
    XPG3 an XPG4. The test suite, when executed in XPG3 mode, correctly tests
    for XPG3 behavior and, when executed in XPG4 mode, for XPG4 behavior. It
    seems that the system under test correctly exhibits XPG4 behavior but not
    XPG3 behavior. The problem would have minor application impact and it may
    be possibly to obtain a waiver in XPG3 mode for a minor fault in the system.

    It is not recommended that this request be granted.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Rejected (REJ)
    Review Conclusion
    This request is refused.

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