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Groups > comp.lang.c++ > #86810
| From | "Fred. Zwarts" <F.Zwarts@KVI.nl> |
|---|---|
| Newsgroups | comp.lang.c++ |
| Subject | Re: how to specify an 8 byte bool ? |
| Date | 2022-10-05 23:19 +0200 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <thksdo$14l$1@gioia.aioe.org> (permalink) |
| References | <thinbh$2pm70$1@dont-email.me> <87fsg3rn6s.fsf@nosuchdomain.example.com> <thiu1f$2t2ra$1@dont-email.me> |
Op 05.okt..2022 om 05:35 schreef Lynn McGuire: > On 10/4/2022 9:58 PM, Keith Thompson wrote: >> Lynn McGuire <lynnmcguire5@gmail.com> writes: >>> How do I specify an 8 byte bool ? Long long ? >> >> What for? >> >> bool is a predefined type, and its size is determined by the >> implementation. >> >> long long is at least 64 bits (and almost always exactly 64 bits). >> uint64_t and int64_t are exactly 64 bits, but are not guaranteed to >> exist. A "byte" is almost always 8 bits, but may be larger (see >> CHAR_BIT). >> >> What problem are you trying to solve? > > I've got a double array, integer*8 array, logical*8 array, and > character*8 array equivalenced in my Fortran code that I am converting > to C++. I want to have the same capability in my C++ code until I get > down the road and figure out what I want to do with this code, if anything. The Fortran EQUIVALENT is in my mind roughly equivalent to a C++ union. So, I would probably go for an array of unions. Where each union is a union of a double, integer, bool and char[8]. The bool would then automatically use the space of the largest type in the union.
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how to specify an 8 byte bool ? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-10-04 20:41 -0500
Re: how to specify an 8 byte bool ? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2022-10-04 19:58 -0700
Re: how to specify an 8 byte bool ? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-10-04 22:35 -0500
Re: how to specify an 8 byte bool ? Christian Gollwitzer <auriocus@gmx.de> - 2022-10-05 07:38 +0200
Re: how to specify an 8 byte bool ? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-10-05 14:02 -0500
Re: how to specify an 8 byte bool ? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-10-05 14:03 -0500
Re: how to specify an 8 byte bool ? David Brown <david.brown@hesbynett.no> - 2022-10-05 09:38 +0200
Re: how to specify an 8 byte bool ? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-10-05 14:03 -0500
Re: how to specify an 8 byte bool ? "Fred. Zwarts" <F.Zwarts@KVI.nl> - 2022-10-05 23:19 +0200
Re: how to specify an 8 byte bool ? "daniel...@gmail.com" <danielaparker@gmail.com> - 2022-10-05 18:45 -0700
Re: how to specify an 8 byte bool ? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-10-05 21:05 -0500
Re: how to specify an 8 byte bool ? "daniel...@gmail.com" <danielaparker@gmail.com> - 2022-10-05 19:07 -0700
Re: how to specify an 8 byte bool ? "Fred. Zwarts" <F.Zwarts@KVI.nl> - 2022-10-06 10:39 +0200
Re: how to specify an 8 byte bool ? David Brown <david.brown@hesbynett.no> - 2022-10-06 14:14 +0200
Re: how to specify an 8 byte bool ? scott@slp53.sl.home (Scott Lurndal) - 2022-10-06 14:03 +0000
Re: how to specify an 8 byte bool ? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-10-05 14:10 -0500
Re: how to specify an 8 byte bool ? scott@slp53.sl.home (Scott Lurndal) - 2022-10-05 20:34 +0000
Re: how to specify an 8 byte bool ? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-10-05 16:18 -0500
Re: how to specify an 8 byte bool ? scott@slp53.sl.home (Scott Lurndal) - 2022-10-05 22:25 +0000
Re: how to specify an 8 byte bool ? scott@slp53.sl.home (Scott Lurndal) - 2022-10-05 22:27 +0000
Re: how to specify an 8 byte bool ? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-10-05 19:16 -0500
Re: how to specify an 8 byte bool ? David Brown <david.brown@hesbynett.no> - 2022-10-06 14:16 +0200
Re: how to specify an 8 byte bool ? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-10-06 15:07 -0500
Re: how to specify an 8 byte bool ? David Brown <david.brown@hesbynett.no> - 2022-10-07 09:07 +0200
Re: how to specify an 8 byte bool ? Lynn McGuire <lynnmcguire5@gmail.com> - 2022-10-07 14:23 -0500
Re: how to specify an 8 byte bool ? Bonita Montero <Bonita.Montero@gmail.com> - 2022-10-10 18:04 +0200
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