#254 Some gtests (SISO.all and Rand) fail on recent openSUSE Tumbleweed versions

[mnhauke]

Test "SISO.all" fails on openSUSE Tumbleweed (x86_64)

[  249s] [----------] 1 test from SISO
[  249s] [ RUN      ] SISO.all
[  249s] /home/abuild/rpmbuild/BUILD/itpp-4.3.1/gtests/siso_test.cpp:41: Failure
[  249s] The difference between ref(n) and act(n) is 0.23025302783542914, which exceeds tol, where
[  249s] ref(n) evaluates to 0.15803900000000001,
[  249s] act(n) evaluates to 0.38829202783542915, and
[  249s] tol evaluates to 0.0001.
[  249s] 180
...
...
[  249s] /home/abuild/rpmbuild/BUILD/itpp-4.3.1/gtests/siso_test.cpp:41: Failure
[  249s] The difference between ref(n) and act(n) is 0.25106818337199366, which exceeds tol, where
[  249s] ref(n) evaluates to 0.14460999999999999,
[  249s] act(n) evaluates to 0.39567818337199367, and
[  249s] tol evaluates to 0.0001.
[  249s] 198
[  249s] [  FAILED  ] SISO.all (610 ms)
[  249s] [----------] 1 test from SISO (610 ms total)

Test "Rand" fails on openSUSE Tumbleweed (i586)

[  401s] [----------] 1 test from Rand
[  401s] [ RUN      ] Rand.All
[  401s] /home/abuild/rpmbuild/BUILD/itpp-4.3.1/gtests/rand_test.cpp:277: Failure
[  401s] The difference between 2.9631003166431262 and ric_rng() is 8.8817841970012523e-16, which exceeds eps, where
[  401s] 2.9631003166431262 evaluates to 2.9631003166431262,
[  401s] ric_rng() evaluates to 2.9631003166431253, and
[  401s] eps evaluates to 4.4408920985006262e-16.
[  401s] [  FAILED  ] Rand.All (4 ms)
[  401s] [----------] 1 test from Rand (5 ms total)
[  401s] 

I have attached full buildlogs for both platforms.