------- Comment #1 from pinskia at gcc dot gnu dot org 2006-01-04 15:17 ------- Hmm, actually there is no rounding from TF to DF except for the fact that upper potion of the TF mode is taken only.
I am thinking this testcase is invalid for 128bit IBM long double format. IBM 128bit long double format is not IEEE 128bit format at all. it means that a+b. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25661