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<p class="MsoPlainText">Hi all,<br>
</p>
<p class="MsoPlainText">Did anybody run paranoia on a leon2 with
FPU? If not, do you use the function 'pow' on any hardware with
FPU (not software floating point)?<br>
</p>
<p class="MsoPlainText">- I ran the 'paranoia' test in the RTEMS
testsuites and ran it on a
board with Atmel leon2 (AT697E) and saw that the function
'pow(x,y)' failed. The<br>
test was compiled with
'hard-float' (I use RTEMS 4.10, gcc 4.4.6 built from distribution.
I have also tried Gaisler's RTEMS 4.10 binaries with the same<br>
failed results).<br>
</p>
<p class="MsoPlainText"> -----------------------------------</p>
<p class="MsoPlainText">Testing powers Z^i for small Integers Z and
i.</p>
<p class="MsoPlainText">ERROR: Severity: DEFECT:<span
style="mso-spacerun:yes">
</span>computing</p>
<p class="MsoPlainText"><span style="mso-spacerun:yes">
</span>(2.00000000000000000e+00) ^ (3.00000000000000000e+00)</p>
<p class="MsoPlainText"><span style="mso-spacerun:yes"> </span>yielded
3.44895534024799920e+16;</p>
<p class="MsoPlainText"><span style="mso-spacerun:yes"> </span>which
compared
unequal to correct 8.00000000000000000e+00 ;</p>
<p class="MsoPlainText"><span style="mso-spacerun:yes">
</span>they differ by 3.44895534024799840e+16 .</p>
<p class="MsoPlainText">Errors like this may invalidate financial
calculations</p>
<p class="MsoPlainText"><span style="mso-spacerun:yes"> </span>involving
interest
rates.</p>
<p class="MsoPlainText">Similar discrepancies have occurred 260
times.</p>
<p class="MsoPlainText">-------------------------------------</p>
<p class="MsoPlainText"> Then I just compiled a simple app just
calling pow(x,y)
in a loop and the function failed with y > 2 (with x being any
value, as
long as y>2 then it will give incorrect result).<br>
</p>
<p class="MsoPlainText">Any comments/suggestions that I can try?<br>
</p>
<p class="MsoPlainText"> Thank you.</p>
<p class="MsoPlainText">-mike-<br>
</p>
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