Timeline for Custom memcmp function
Current License: CC BY-SA 3.0
10 events
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| Feb 7, 2016 at 2:59 | history | edited | 5gon12eder | CC BY-SA 3.0 |
mention the n == 0 case (credit to chux)
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| Feb 7, 2016 at 2:50 | history | edited | 5gon12eder | CC BY-SA 3.0 |
prettier code, nicer graphic and early exit
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| Feb 5, 2016 at 5:25 | comment | added | Loki Astari |
hoping the standard library implementers knew what they did :-)
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| Feb 5, 2016 at 4:02 | comment | added | 5gon12eder |
@LokiAstari Thank you ;-) I don't think that ints will be faster than longs on (m)any platforms. They might be the same, of course. As I've written in my answer, I've gained almost 50 % speedup just by changing the typedef but of course, that only reinforces your suggestion to always measure. If you need to optimize for platforms you don't have to experiment on, maybe using uint32_fast_t might be useful, hoping the standard library implementers knew what they did.
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| Feb 5, 2016 at 3:45 | comment | added | Loki Astari |
Fantastic write up. One of the best I have seen. Especially the use of the graph to show the relative speeds. But I disagree with Prefer longs over ints not that I prefer ints but I think it is another thing that can be explicitly tested to see if it improves performance (I suspect it will but am not 100% sure that it will help on all architectures).
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| Feb 5, 2016 at 2:49 | history | edited | 5gon12eder | CC BY-SA 3.0 |
Added nicer graph and concrete numbers for int -> long improvement.
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| Feb 5, 2016 at 2:44 | history | edited | 5gon12eder | CC BY-SA 3.0 |
Added nicer graph and concrete numbers for int -> long improvement.
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| Feb 5, 2016 at 2:17 | history | edited | 5gon12eder | CC BY-SA 3.0 |
added 30 characters in body
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| Feb 5, 2016 at 2:05 | history | edited | 5gon12eder | CC BY-SA 3.0 |
deleted 62 characters in body
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| Feb 5, 2016 at 1:56 | history | answered | 5gon12eder | CC BY-SA 3.0 |