Hi Eljay, I'm using libraries to emulate 128-bit fp. I was just wondering if any low cost CPU can do 128-bit arithmetic directly. > >Which processors supports 128-bit floating point arithmetic? > > None that I work with. These days, I just know about Pentium 4, > PowerPC G4, SPARC64, DEC/Compaq TRU64's Alpha. Well, Pentium 4 is NOT the list, is it? Have a nice day and many thanks for your help! Jirka