------- Comment #4 from pinskia at gcc dot gnu dot org 2006-01-04 17:13 ------- >From that page: The 128-bit implementation differs from the IEEE standard for long double in the following ways:
Supports only round-to-nearest mode. If the application changes the rounding mode, results are undefined. Does not fully support the IEEE special numbers NaN and INF. Does not support IEEE status flags for overflow, underflow, and other conditions. These flags have no meaning for the 128-bit long double inplementation. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25661