use feenableexcept when glibc is available (#22241)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22241
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20387
glibc has a non-standard function, feenableexcept, that triggers floating-point exception handler . Compared to feclearexcept + fetestexcept , this approach allows us to see precisely where the exception is raised from the stack trace.
Reviewed By: jspark1105
Differential Revision: D15301095
fbshipit-source-id: 94f6e72456b2280f78d7d01c2ee069ae46d609bb
