Hello, I would like to use 128-bits floating point arithmetic on my Pentium 4 Linux machine. Does gcc support it? I have tried to use the flags -march=pentium4 -mcpu=pentium4 -mfpmath=sse -m128bit-long-double but the precision of floating point numbers of type "long double" is just 80 bits. Could anybody kindly point me to C source code together with gcc compile flags to do basic computation (addition and multiplication) with 128 bits precision floating point numbers? Also, are there any plans to implement 128 bits transcendent functions like sin and exp? I would highly appreciate any help on this. Thank you very much! Jirka