Follow-up Comment #1, bug #54919 (group gsl): The test suite assumes that the relative errors are at most 1024*GSL_DBL_EPSILON, which is effectively 2.2e-13. The results of your compiler are for this case having errors of 6.e-13 and 5.e-13. If you are desperate to compile this with a success of the 'make check' you need to increase the value of 1024*GSL_DBL_EPSILON in test.c near line 3354 to something like 5000*GSL_DBL_EPSILON (so make it roughly a factor 4 larger...) In addition check that optimization during compilation is on such that the compilers uses the full precision of the registers on your chips, which usually is more than the 64 IEEE version.
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