27.04.2018 17:14, Sven Barth via fpc-devel wrote:
Thorsten Engler <thorsten.eng...@gmx.net <mailto:thorsten.eng...@gmx.net>> schrieb am Fr., 27. Apr. 2018, 16:09:Highest integer that fits in a Int64:____ 9223372036854775808____ 1e20:____ 100000000000000000000____ __ __ Your Int is overflowing.____ __ __ You can’t implement Frac by going through an Integer, that will never work. Except if you have an integer that can hold 1.8E308 (which would be a 1024 bit integer, or thereabouts)Yes, I saw that now as well, though it's even worse as the cvttsd2si instruction in fact only works with 32-bit integers. That additionally means that Trunc() and Round() are broken for such values as well as they rely on the same kind of functions. Int() works because it doesn't have an SSE version.
That's true for i386. But on x86_64 cvt(t)sd2si instuctions can deal with int64 range, if destination register is a 64-bit one.
Regards, Sergei _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
