jffi test failures on sparcv9

$ ANT_OPTS=-d64 ant -Dplatform.cpu=sparcv9
<...>
-do-test-run:
    [junit] Testsuite: com.kenai.jffi.ClosureTest
    [junit] Tests run: 35, Failures: 1, Errors: 0, Time elapsed: 1.072 sec
    [junit] 
    [junit] Testcase: fastNumericClosureVrF(com.kenai.jffi.ClosureTest):        FAILED
    [junit] Wrong value returned by closure
    [junit] junit.framework.AssertionFailedError: Wrong value returned by closure
    [junit]     at com.kenai.jffi.ClosureTest.testClosureVrF(ClosureTest.java:200)
    [junit]     at com.kenai.jffi.ClosureTest.fastNumericClosureVrF(ClosureTest.java:206)
    [junit] 
    [junit] 
    [junit] Test com.kenai.jffi.ClosureTest FAILED
    [junit] Testsuite: com.kenai.jffi.ForeignTest
    [junit] Tests run: 5, Failures: 0, Errors: 0, Time elapsed: 0.393 sec
    [junit] 
    [junit] Testsuite: com.kenai.jffi.LibraryTest
    [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 0.347 sec
    [junit] 
    [junit] Testsuite: com.kenai.jffi.MemoryTest
    [junit] Tests run: 4, Failures: 0, Errors: 0, Time elapsed: 0.391 sec
    [junit] 
    [junit] Testsuite: com.kenai.jffi.NumberTest
    [junit] Tests run: 45, Failures: 1, Errors: 0, Time elapsed: 0.88 sec
    [junit] 
    [junit] Testcase: returnFastNumericF32(com.kenai.jffi.NumberTest):  FAILED
    [junit] Value not returned correctly expected:<0.0> but was:<NaN>
    [junit] junit.framework.AssertionFailedError: Value not returned correctly expected:<0.0> but was:<NaN>
    [junit]     at com.kenai.jffi.NumberTest.returnF32(NumberTest.java:240)
    [junit]     at com.kenai.jffi.NumberTest.returnFastNumericF32(NumberTest.java:230)
    [junit] 
    [junit] 
    [junit] Test com.kenai.jffi.NumberTest FAILED
    [junit] Testsuite: com.kenai.jffi.PlatformTest
    [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 0.331 sec
    [junit] 
    [junit] Testsuite: com.kenai.jffi.StructTest
    [junit] Tests run: 14, Failures: 0, Errors: 0, Time elapsed: 0.524 sec
    [junit] 
    [junit] Testsuite: com.kenai.jffi.TypeTest
    [junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 0.323 sec
    [junit]