On Fri, 2007-12-14 at 13:46, Kumar Gala wrote: > >> When I run this on a G5 (w/HW FP) I get: > >> > >> dmul 3fe0000000000000 * 1 = 0 expected 0 (PASS) > >> dmul bfe0000000000000 * 1 = 8000000000000000 expected 0 (PASS) > >> dmul 8000000000000001 * bfe0000000000000 = 0 expected 0 (PASS) > >> > >> ddiv 1 / 4000000000000000 = 0 expected 0 (PASS) > >> > >> and on the 85xx w/FP emu: > >> > >> dmul 3fe0000000000000 * 1 = 0 expected 0 (PASS) > >> dmul bfe0000000000000 * 1 = 8000000000000000 expected 0 (PASS) > >> dmul 8000000000000001 * bfe0000000000000 = 0 expected 0 (PASS) > >> > >> ddiv 1 / 4000000000000000 = 0 expected 0 (PASS) > >> > >> Maybe I'm missing where the error is. > > I am missing ... > > It is supposed to run based on previous IEEE 754 patch. > > http://ozlabs.org/pipermail/linuxppc-dev/2007-February/031351.html > > I'd really like to see to see a testcase show the issue with "classic > FP emu" on a 85xx system. I can understand. You know, For a 85xx system without the previous patch or other 'classic' powerpc, it is hard to trigger this issue. Although I believe it is a problem fixed up. Do you have any idea? Roy
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