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Bug 786

Summary: The polynomialsolver_9 test fails for seed 1396648348
Product: Eigen Reporter: Benoit Steiner <benoit.steiner.goog>
Component: Unsupported modulesAssignee: Nobody <eigen.nobody>
Status: CONFIRMED ---    
Severity: Failed Unit Test CC: jitseniesen
Priority: Normal    
Version: 3.2   
Hardware: All   
OS: All   
Whiteboard:

Description Benoit Steiner 2014-04-05 00:03:18 UTC
I compiled the latest eigen codebase with gcc4.8, and ran the tests on ubuntu

./unsupported/test/polynomialsolver_9 s1396648348

Initializing random number generator with seed 1396648348
Repeating each test 10 times
Standard cases
Hard cases
Test sugar
Standard cases
Hard cases
Test sugar
Standard cases
Hard cases
Test sugar
Standard cases
Hard cases
WRONG root: 
Polynomial: -0.161   2.409  -16.64    70.2    -202   418.3  -641.9   738.7  -637.6   407.6  -187.6    58.9   -11.3       1
Roots found:       (0.4475,0)   (0.4671,0.1611)  (0.4671,-0.1611)   (0.5465,0.3319)  (0.5465,-0.3319)    (0.727,0.4452)   (0.727,-0.4452)   (0.8583,0.5268)  (0.8583,-0.5268)    (1.213,0.5944)   (1.213,-0.5944)    (1.613,0.2844)   (1.613,-0.2844)
Abs value of the polynomial at the roots: 1.398e-05  1.945e-05  1.945e-05  4.564e-05  4.564e-05  5.422e-05  5.422e-05  0.0002319  0.0002319   0.007725   0.007725    0.05165    0.05165

Test sugar
Test (polynomialsolver<float,Dynamic>( internal::random<int>(9,13) )) failed in /usr/local/google/home/bsteiner/EigenLatest/eigen/unsupported/test/polynomialsolver.cpp (125)
    found
Stack:
  - (polynomialsolver<float,Dynamic>( internal::random<int>(9,13) ))
  - polynomialsolver
  - Seed: 1396648348

Aborted (core dumped)
Comment 1 Nobody 2019-12-04 13:12:01 UTC
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