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Problem Report 1600 Details

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Report 1600 Actions

    Problem Report Number 1600
    Submitter's Classification Specification problem
    State Resolved
    Resolution Permanent Interpretation (PIN)
    Problem Resolution ID PIN.X.0157
    Raised 1996-03-13 08:00
    Updated 2003-03-13 08:00
    Published 1996-03-21 08:00
    Product Standard Internationalised System Calls and Libraries Extended (UNIX 95)
    Certification Program The Open Brand certification program
    Test Suite VSU version 4.1.0
    Test Identification CAPI.os/genuts/ecvt 5
    Specification System Interfaces and Libraries Issue 4 Version 2
    Location in Spec See Problem Text
    Problem Summary PIN4U.00023 This test may fail on implementations because the position of the decimal point when value is zero is ambiguous.
    Problem Text
    This test may fail on implementations because the position of the
    decimal point when value is zero is ambiguous.

    The test suite expects that ecvt(0.000000, 6) will set the radix indicator
    to 1. On page 120 of the XPG4 V2 XSH, no mention is made of the required
    output for this case, and thus this testcase is expecting non-XPG4 behavior.
    This appears to be an oversight by the base working group as mathematicians
    say either 1 or 0 is correct.
    Test Output
    TEST CASE: ecvt

    TEST PURPOSE #5
    A call to char *ecvt(double value, int
    ndigit, int *decpt, int *sign) shall store the
    position of the radix character relative to the
    beginning of the returned string indirectly through
    decpt with a positive value meaning to the right of
    the returned string and a negative value meaning to
    the left of the returned string.
    TEST: ecvt(0.000000, 6) should set decpt to 1
    ERROR: Position of decimal point is not correct, decpt set to 0
    TEST: ecvt(12345.987000, 11) should set decpt to 5
    TEST: ecvt(1234.598700, 11) should set decpt to 4
    TEST: ecvt(123.459870, 11) should set decpt to 3
    TEST: ecvt(12.345987, 11) should set decpt to 2
    TEST: ecvt(1.234599, 11) should set decpt to 1
    TEST: ecvt(0.123460, 11) should set decpt to 0
    TEST: ecvt(0.012346, 11) should set decpt to -1
    TEST: ecvt(0.001235, 11) should set decpt to -2
    TEST: ecvt(0.000123, 11) should set decpt to -3
    TEST: ecvt(0.000012, 11) should set decpt to -4
    TEST: ecvt(0.000001, 11) should set decpt to -5
    5 FAIL

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    We agree with the submitter and recommend a permanent interpretation.

    In our opinion the base working group should mandate the behavior
    expected by the test. We believe this is the output format most
    application developers would prefer.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Permanent Interpretation (PIN)
    Review Conclusion
    A Permanent Interpretation is granted.

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