Hi Vincent, On Fri, May 13, 2011 at 11:29:46AM +0200, Vincent Lefevre wrote: > https://www-304.ibm.com/support/docview.wss?rs=2030&uid=swg21245006 > says: > > GCC versions 4.0 and higher support 128-bit quad precision > floating point values. The XL compilers now provide the > -qfloat=gcclongdouble option to be compatible with GCC's > representation of 128-bit quad precision floating point > values. > > Anyone knows how to enable it? > > By default, I just get the double-double representation (yielding > 106-bit precision). the gcc online-docs say http://gcc.gnu.org/onlinedocs/gcc/Floating-Types.html "Not all targets support additional floating point types. __float80 and __float128 types are supported on i386, x86_64 and ia64 targets." (but I never tried it on PowerPC) Axel
