Robert Jacques Wrote: > On Wed, 21 Apr 2010 23:48:20 -0300, strtr <st...@spam.com> wrote: > > > abcd Wrote: > > > >> On the other hand, being an engineer, I use the reals all the time and > >> want them to stay. I would use the max precision supported by the cpu > >> then fixed precision like double any day. > >> > >> -sk > > > > For me it's the exact opposite, reproducibility/portability is key. My > > problem with real is that I am always afraid my floats get upgraded to > > them internally somewhere/somehow. > > You do realize that the x86 floating point unit _always_ promotes floats > and doubles to reals internally? The only way around it is for the > compiler to use MMX/SSE unit for everything instead.
Does this mean that float calculations are always off between intel and amd as intel uses 80bit reals? (x86 is my target audience)
