On Mon, Jun 18, 2007 at 11:10:43AM -0700, Steve Ellcey wrote: > > BTW: IA64 has the same issues with two FP types (long double XFmode and > > "longer double" TFmode). How is this solved for IA64? > > > > Uros. > > This is different on IA64 HP-UX and IA64 Linux. On HP-UX, 128 bits is > the standard long double and 80 bits is __float80. We use the 'W' > suffix for a __float80 constant on HP-UX. HP-UX also uses a lower case > 'w' in math names for functions (e.g. sqrtw) for __float80 functions. > > Since __float128 == long double on HP-UX we can just use 'L' and 'l' for > those. >
We need a standard for __float128. Otherwise, a program using __float128 may generate different results with different compilers on different platforms. BTW, I had a __float128 patch for glibc. Because there is no __float128 standard, it wasn't accepted. H.J.
