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by lmm
4639 days ago
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And you repeat that macro in every file? Or you assume you can somehow persuade other OSes to add it to their headers? printf("%lld\n", (long long) x); is ugly but it works on every system, including existing systems with 32-bit time_t that don't make any changes to their headers. |
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You are familiar with the concept of headers, right? ;-)
Just put that in the project's common header (which if it is dealing with so many different OS's, invariably already have a bunch of platform abstractions). I deliberately structured the solution so the only "extra work" that is needed is for whatever platform has created a long long time_t (and if you really wanted to, you could probably get rid of even that work and base the entire thing off of sizeof(long long) even without using something like autoconf).
> printf("%lld\n", (long long) x); is ugly
Wow, we couldn't be of more different opinions. I'd argue the virtue of that approach is it is less ugly are more likely to be easily accepted as a change for crufty old 32-bit code in some embedded system that everyone has forgotten about.