From: "Joseph S. Myers" <joseph@codesourcery.com> Date: Wed, 8 Aug 2012 20:00:10 +0000 > Does log1pl (0x1p-16378L) (with of course -fno-builtin or use of > volatile variables to prevent compile-time computation) generate a > spurious underflow exception? Yes, this generates both an underflow and an inexact exception.