Jonas Maebe schrieb: > > On 04 Oct 2007, at 13:24, Michael Schnell wrote: > >>> It's probably better to directly introduce a longdouble type with >>> longdouble (128 bit) semantics on all platforms. I don't think that >>> emulating the almost nowhere supported 80 bit type does much good. >> Is 128 bit supported by any hardware ? > > Most hardware only directly supports up to 64 bit precision.
For the record: at least Sparc supports 128 Bit. > >> 80 bit is and it's an IEEE standard format. > > It's a fuzzy standard. The IEEE "double-extended precision" is only > defined as ">= 79 bit", similarly to how "single-extended precision" is > defined as ">= 43 bit". > >> So I can't imagine why it is "nowhere supported" > > Because the x86 is pretty much the only one to support it in hardware. > Similarly, the m68k supported a 96 bit double-extended type which is > supported (almost?) nowhere else, and it's just as IEEE standard as the > x86's 80 bit floating point format. It just doesn't make sense to > emulate such cpu-specific types on other platforms. > > > Jonas > _______________________________________________ > fpc-devel maillist - fpc-devel@lists.freepascal.org > http://lists.freepascal.org/mailman/listinfo/fpc-devel _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
