[Bug-gsl] [bug #43015] eigen test fails on 32-bit (x86) Linux with -O3

[Patrick Alken]

URL:
  <http://savannah.gnu.org/bugs/?43015>

                 Summary: eigen test fails on 32-bit (x86) Linux with -O3
                 Project: GNU Scientific Library
            Submitted by: psa
            Submitted on: Mon 18 Aug 2014 06:19:04 PM GMT
                Category: Runtime error
                Severity: 3 - Normal
        Operating System: 
                  Status: None
             Assigned to: None
             Open/Closed: Open
                 Release: 
         Discussion Lock: Any

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Details:

>From victor.zverovich =at= gmail.com

Hello,

I noticed that eigen test fails on 32-bit Linux (x86) when compiled with -O3
flag:

$ ./configure CFLAGS="-O3"
$ make
$ eigen/test
FAIL: gen, direct eigenvalue(4) imag, random (-0.481216772353650846
observed vs 0.481216772353650846 expected) [877968]
FAIL: gen, direct eigenvalue(5) imag, random (0.481216772353650901 observed
vs -0.481216772353650846 expected) [877970]
FAIL: gen, direct eigenvalue(15) imag, random (6.85872455924790447 observed
vs -6.85872455924790536 expected) [877990]
FAIL: gen, direct eigenvalue(16) imag, random (-6.85872455924790536
observed vs 6.85872455924790625 expected) [877992]

I'm using GSL version 1.16, 32-bit Ubuntu 10.04 and GCC 4.4.3.

Best regards,
Victor




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