Maybe the follow can help Byte 0 .. 255 1 Shortint -128 .. 127 1 Smallint -32768 .. 32767 2 Word 0 .. 65535 2 Integer either smallint or longint size 2 or 4 Cardinal longword 4 Longint -2147483648 .. 2147483647 4 Longword 0 .. 4294967295 4 Int64 -9223372036854775808 .. 9223372036854775807 8 QWord 0 .. 18446744073709551615 8
http://www.freepascal.org/docs-html/ref/refsu5.html 2012/11/14 Curt Carpenter <1cjcarpen...@att.net>: > Hello Sven. > > Thank you for the help. > > I tried this code: > > procedure test; > var c: integer; > loc,hic: byte; > begin > c := 1000; > hic := hi(c); > loc := lo(c); > end; > > The result is always hic = 0 and loc = 0 for me. > > I have looked in ninl.pas as you suggested, and found the in_lo_xxxxxx > items around line 2780 in that file. I note that in_lo_integer and > in_hi_integer do not appear among the items listed. > > In fpc/rtl/inc/system.inc, I find Hi(b:byte): byte declared. > in fpc/rtl/inc/systemh.inc, I find only declarations for hi and lo. > > I'm guessing that somehow hi(i:integer): byte and lo(i:integer): byte got > dropped from the code base somehow (but remained in the fpc documentation). > > Perhaps it's located somewhere that I have not looked yet? > > Anyway -- thanks to all who gave me some pointers! I don't have the skill > to try to suggest a fix, if in fact one is required. The work-around for me > is to simply use word rather than integer types. > > Regards, > Curt Carpenter > > > On 11/14/2012 4:50 AM, Sven Barth wrote: >> >> Am 14.11.2012 05:19, schrieb Curt Carpenter: >>> >>> Hello. >>> >>> I am using Lazarus 0.9.30.4 with FPC 2.6.0 under Windows XP. >>> >>> In my system, the two functions "hi(x)" and "lo(x)" don't seem to work if >>> the argument x is an integer variable (although both functions work fine if >>> x is a WORD variable). >>> >> Why do you come to the conclusion that they work incorrectly? Do you have >> an example where you can state what you expect and what you get? >> >>> To see if I could figure out why this is, I started trying to find the >>> System unit that contains these two functions. I haven't been able to >>> locate it though. >> >> >> The hi and lo functions are compiler intrinsics and are not visible in >> code (the compiler generates specific code for them). If you still want to >> explore: they are implemented in compiler/ninl.pas (look for "in_XX_YYY" >> where "XX" is either "hi" or "lo" and "YYY" is "word", "long" or "qword"). >> >>> >>> Could anyone tell me where I'll find the system unit source? I have the >>> source for FPC, but can's seem to find system.pas anywhere. >>> >> The system units are called "system.pp" (not .pas) and are located for >> each target in rtl/TARGET/system.pp (these usually include files from >> rtl/inc or rtl/TARGET or rtl/PLATFORM) (example for TARGET is win32 or >> linux, example for PLATFORM is i386 or arm) >> >> Regards, >> Sven >> >> -- >> _______________________________________________ >> Lazarus mailing list >> Lazarus@lists.lazarus.freepascal.org >> http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus >> > > > -- > _______________________________________________ > Lazarus mailing list > Lazarus@lists.lazarus.freepascal.org > http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus -- _______________________________________________ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
