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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: bart <bc@freeuk.com> Newsgroups: comp.lang.c Subject: Re: "A diagram of C23 basic types" Date: Mon, 7 Apr 2025 19:18:48 +0100 Organization: A noiseless patient Spider Lines: 39 Message-ID: <vt14u7$bjs0$2@dont-email.me> References: <87y0wjaysg.fsf@gmail.com> <vsj1m8$1f8h2$1@dont-email.me> <vsj2l9$1j0as$1@dont-email.me> <vsjef3$1u4nk$1@dont-email.me> <vsjg6t$20pdb$1@dont-email.me> <vsjgjn$1v1n4$1@dont-email.me> <vsjk4k$24q5m$1@dont-email.me> <vsjlcp$230a5$1@dont-email.me> <vsni1v$291i3$5@dont-email.me> <vt13vp$bjs0$1@dont-email.me> <20250407211216.00006238@yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Mon, 07 Apr 2025 20:18:48 +0200 (CEST) Injection-Info: dont-email.me; posting-host="d1797a780321cb7d5295ec883a418a71"; logging-data="380800"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/Hw24OQy0Tg/yWo/PLBLiG" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:6+DkJmBec0VbG04KUGj7C1Ff9Ag= In-Reply-To: <20250407211216.00006238@yahoo.com> Content-Language: en-GB Bytes: 2465 On 07/04/2025 19:12, Michael S wrote: > On Mon, 7 Apr 2025 19:02:34 +0100 > bart <bc@freeuk.com> wrote: > >> On 04/04/2025 04:01, Lawrence D'Oliveiro wrote: >>> On Wed, 2 Apr 2025 16:33:46 +0100, bart wrote: >>> >>>> Here, tell me at a glance the magnitude of >>>> this number: >>>> >>>> 10000000000 >>> >>> #define THOUSAND 1000 >>> #define MILLION (THOUSAND * THOUSAND) >>> #define BILLION (THOUSAND * MILLION) >>> >>> uint64 num = 10 * BILLION; >>> >>> Much easier to figure out, don’t you think? >> >> Try 20 * BILLION; it will overflow if not careful. (Actually both 10/20 billion will overflow u32; I was thinking of 20 billion billion overflowing u64.) >> I'd normally write '20 billion' outside of C, since I use such >> numbers, with lots of zeros, constantly when writing test code. >> >> But when it isn't all zeros, or the base isn't 10, then numeric >> separators are better. >> > > Is not it "20 milliards" in British English? We (UK) now use 'billion' for 1E9; in the past it meant 1E12. 'Milliardo' is Italian for 'billion'; perhaps in a few other languages too.