Update .travis.yml

.travis.yml

@@ -222,7 +222,7 @@ matrix:
     - <<: *test-macos
       osx_image: xcode12
       before_script:
-        - COMMON_FLAGS="DYNAMIC_ARCH=1 NUM_THREADS=32"
+        - COMMON_FLAGS="DYNAMIC_ARCH=1 DYNAMIC_LIST='HASWELL SKYLAKEX COOPERLAKE' NUM_THREADS=32"
         - brew update
       script:
         - travis_wait 45 make QUIET_MAKE=1 $COMMON_FLAGS $BTYPE
@@ -275,9 +275,21 @@ matrix:
         apt:
           packages:
             - gfortran
+            - python3-pip
       script:
         - travis_wait 45 make && make lapack-test
-        
+        - pip install numpy
+        - echo -e "import numpy as np\nvalues = [-20, 2, 3, 4, 5, 4, 3, 2]\n \
+           values = values[int(non_zero[0]):int(np.non_zero[-1])+1]\n \
+           _, e = np.frexp(values[::-1])\n \
+           c = int(-0.5 * (np.max(e) + np.min(e)))\n \
+           p = values[::-1]\n \
+           p = np.ldexp(p, c)\n \
+           A = np.diag(np.full(p.size - 2, p[0]), k=-1)\n \
+           A[0,:] = -p[1:]\n \
+           eigenvalues = np.linalg.eigvals(A)\n \
+           print(eigenvalues)\n" >linalgtest.py
+        - python3 linalgtest.py
 # whitelist
 branches:
   only: