Tue, 10 Jul 2018 03:36:01 +1000 Thorsten Engler wrote: >> -----Original Message----- >> From: fpc-devel <fpc-devel-boun...@lists.freepascal.org> On Behalf Of >> Max Nazhalov via fpc-devel >> Sent: Tuesday, 10 July 2018 02:25 >> >> Just one question: doesn't all this new stuff introduce another kind >> of mess during cross-compiling? >> >> E.g. some complex nested const.expr. "sin(cos(0.12345))" evaluated by >> the compiler on x64 (double precision) is not the same as if it would >> be evaluated by the compiled program itself running on some x32 >> (float80), or some future float128 alikes..
> How would that be any different from floating point consts > currently that are defined with an expression involving calculations? Intermediate results may fall out of the compiler range capabilities, or introduce lost of precision in generated constant (e.g. Win64->Win32 cross-compiler is able to do only double-precision calculations, however the resulting program is fully float80-capable). (Hopefully compiling will just fail with over/underflow, but I cannot check this right now). In any case, I see no other but softfloat solution, as Florian already mention, and this would be a big performance impact, I suspect.. :( -- Best regards, Max mailto:stein_nos...@mail.ru _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
