|Re: [eigen] Problems compiling 3.0.2 tests on VS2008|
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On Sun, 11 Sep 2011, Benoit Jacob wrote:
We should release 3.0.3 with this fix [for min/max macros], shouldn't
Sounds like a good idea.
I tried compiling the Eigen2 tests and encountered failures in
eigen2_alignedbox_1 and eigen2_alignedbox_2, in line 56, where it tests
whether b2.contains(b1); all other tests pass. I tried to bisect and went
back to the point that the Eigen2 tests were incorpored (pre-3.0.0), but
the failure was still there (it's also present in the dev branch). So it
doesn't really have to block a 3.0.3 release.
The test failures happen on a 32-bit Red Hat box with GCC 4.5.1 both with
and without vectorization. I can reproduce them on a 64-bit Debian box
with GCC 4.6.1 if I define EIGEN_TEST_X87.
The test in eigen2_alignedbox can be summarized as follows:
AlignedBox<Vector2f> b1, b2;
/* Initialize b1 and b2 */
So it basically is a test for floating-point equality, and my guess is
that this fails due to the weird mix of double and extended precision with
the x87 floating-point unit.