On 10/12/18 9:51 AM, Giuliano Augusto Faulin Belinassi wrote: > Hello > What is the output of these functions on such arch? Since the > test didn't fail for the sinatan counterpart, an possible explanation > would be that the calculation of the sqrf, sqrt and sqrtl (lines > 62-64) yielded a number that is far behind of what it should be. > However, I am still not sure about this, so I will investigate > further. > How about I write a small program to check if the result > obtained by this calculation is what it should be? I suspect it's less the architecture and more the underlying library. As Christophe mentioned, both issues are with newlib which is an C library primarily used in the emebedded space. I believe it's math code derives from early BSD libm and likely hasn't been stressed for this kind of correctness. It's lightly maintained (primarily for cygwin).
I'm going to run the testcases in my arm linux chroots. That should allow us to rule out codegen issues as those chroots will be using glibc for their math library. jeff
