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Problem Report 0367 Details

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This page provides all information on Problem Report 0367.

Report 0367 Actions

    Problem Report Number 0367
    Submitter's Classification Minor System Fault
    State Resolved
    Resolution Minor System Fault (MSF)
    Problem Resolution ID MSF.X.0008
    Raised 1994-01-31 08:00
    Updated 2003-03-13 08:00
    Published 1994-03-21 08:00
    Expiry Date 1995-03-20
    Product Standard Internationalised System Calls and Libraries (XPG4)
    Certification Program The Open Brand certification program
    Test Suite VSX4 version 4.2.4
    Test Identification XOPEN.os/maths/y0 12, 13, 14
    Problem Summary MSF4.008 We believe that the correct behavior in the case of 0 (zero) as an argument to the bessel functions is to return -HUGE_VAL. We are currently returning NaN as is specified for negative numbers. This wi...
    Problem Text
    We believe that the correct behavior in the case of 0 (zero)
    as an argument to the bessel functions is to return
    -HUGE_VAL. We are currently returning NaN as is specified for
    negative numbers. This will be corrected in the next release.
    Test Output
    .sp 1
    y0(), when called with an argument of zero, returns -HUGE_VAL and may
    set errno to ERANGE or EDOM.
    This test is not executed in XPG3 mode.
    RETURN VALUES: expected: -1.79769e+308, observed: ?
    Bit Representation: expected value: \377\357\377\377\377\377\377\377
    Bit Representation: observed value: \177\370\000\000\000\000\000\000
    .sp 1
    y1(), when called with an argument of zero, returns -HUGE_VAL and may
    set errno to ERANGE or EDOM.
    This test is not executed in XPG3 mode.
    RETURN VALUES: expected: -1.79769e+308, observed: ?
    Bit Representation: expected value: \377\357\377\377\377\377\377\377
    Bit Representation: observed value: \177\370\000\000\000\000\000\000
    .sp 1
    yn(), when called with an argument of zero, returns -HUGE_VAL and may
    set errno to ERANGE or EDOM.
    This test is not executed in XPG3 mode.
    RETURN VALUES: expected: -1.79769e+308, observed: ?
    Bit Representation: expected value: \377\357\377\377\377\377\377\377
    Bit Representation: observed value: \177\370\000\000\000\000\000\000

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    This minor system fault should not adversely affect applications since
    the resultant NaN is likely to be trapped in a subsequent operation which
    uses the return value and the computation should be abandoned at that point
    rather than when -HUGE_VAL is returned.

    It is recommended that this be considered to be a minor system fault.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Minor System Fault (MSF)
    Review Conclusion
    A temporary waiver is granted.

    Problem Reporting System Options:

     

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