manipulating FPU rounding modes on alpha

2007-09-06 Thread Joachim Reichel
Hi, I'm maintaining cgal (non-free), a package for computational geometry that requires manipulating the FPU rounding mode for some math operations. I need some help concerning an alpha specific problem. It turned out that the FPU rounding macros in 3.3-1 didn't work on alpha (search for ERROR in

Re: manipulating FPU rounding modes on alpha

2007-09-06 Thread Lennart Sorensen
On Thu, Sep 06, 2007 at 09:41:56PM +0200, Joachim Reichel wrote: > I'm maintaining cgal (non-free), a package for computational geometry > that requires manipulating the FPU rounding mode for some math > operations. I need some help concerning an alpha specific problem. > > It turned out that the

RE: manipulating FPU rounding modes on alpha

2007-09-06 Thread Uwe Schindler
On my machine (the machine where Joachim tested the build) the kernel module math_emu is loaded. Could it be the case that the test do not fail on my machine because of that? In older mails from this list I recognize a problem that code linked against the new libc needs math_emu enabled? - Uwe

Re: manipulating FPU rounding modes on alpha

2007-09-06 Thread Joachim Reichel
Hi, >> I have no clue how to debug this problem. The test works if the package >> is build manually, but fails on the buildd (ds10). I have no experience >> with alpha and don't know how to track this down. > Is this possibly a result of the switch to ldbl128 that happened around > the end of may

Re: manipulating FPU rounding modes on alpha

2007-09-06 Thread Steve Langasek
On Thu, Sep 06, 2007 at 10:51:19PM +0200, Uwe Schindler wrote: > On my machine (the machine where Joachim tested the build) the kernel module > math_emu is loaded. Could it be the case that the test do not fail on my > machine because of that? In older mails from this list I recognize a problem > t

Re: manipulating FPU rounding modes on alpha

2007-09-06 Thread Lennart Sorensen
On Thu, Sep 06, 2007 at 10:51:19PM +0200, Uwe Schindler wrote: > On my machine (the machine where Joachim tested the build) the kernel module > math_emu is loaded. Could it be the case that the test do not fail on my > machine because of that? In older mails from this list I recognize a problem > t

Re: RE: manipulating FPU rounding modes on alpha

2007-09-06 Thread Joachim Reichel
Hi, I just checked once again on Uwe's machine without math_emu loaded. Now the test fails -- but in a slightly different way than on the buildd. Furthermore, the buildd ds10 is a ev6 according to www.buildd.net, thus it shouldn't need math_emu, right? Joachim -- To UNSUBSCRIBE, email to [EMAI