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| From | James Kuyper <jameskuyper@verizon.net> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: What is truncation for (singed) integer in C ? |
| Date | 2015-09-19 16:52 -0400 |
| Organization | Self |
| Message-ID | <55FDCB19.7070401@verizon.net> (permalink) |
| References | <6f66f235-1b11-4b0c-b2d8-c49ac3eac78e@googlegroups.com> <87twqq9msk.fsf@bsb.me.uk> <d65vdmFsqvaU1@mid.individual.net> |
On 09/19/2015 04:38 PM, Tim Prince wrote: ... > My references imply that the definition with truncation towards 0 came > in with C89. Before that, i/2 might be considered interchangeable with > i>>1 regardless of whether 1's or 2's complement was in use, even though > they give different results. Not quite. The change was made in C99, not C89. In C89, it was unspecified whether fractions were rounded toward zero or toward -infinity. I'm not sure whether it was implementation-defined, but I think it was. There was no requirement that i/2 be the same as i>>1.
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What is truncation for (singed) integer in C ? fl <rxjwg98@gmail.com> - 2015-09-19 12:25 -0700
Re: What is truncation for (singed) integer in C ? fir <profesor.fir@gmail.com> - 2015-09-19 12:55 -0700
Re: What is truncation for (singed) integer in C ? fir <profesor.fir@gmail.com> - 2015-09-19 13:20 -0700
Re: What is truncation for (singed) integer in C ? Geoff <geoff@invalid.invalid> - 2015-09-19 13:05 -0700
Re: What is truncation for (singed) integer in C ? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-09-19 21:28 +0100
Re: What is truncation for (singed) integer in C ? Tim Prince <tprince@computer.org> - 2015-09-19 16:38 -0400
Re: What is truncation for (singed) integer in C ? James Kuyper <jameskuyper@verizon.net> - 2015-09-19 16:52 -0400
Re: What is truncation for (singed) integer in C ? Keith Thompson <kst-u@mib.org> - 2015-09-19 13:45 -0700
Re: What is truncation for (singed) integer in C ? James Kuyper <jameskuyper@verizon.net> - 2015-09-19 16:46 -0400
Re: What is truncation for (singed) integer in C ? Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-09-19 16:47 -0400
Re: What is truncation for (singed) integer in C ? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-09-19 22:55 -0600
Re: What is truncation for (singed) integer in C ? James Kuyper <jameskuyper@verizon.net> - 2015-09-20 10:54 -0400
Re: What is truncation for (singed) integer in C ? Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-09-20 10:11 -0600
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