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Optimize Integer Division with Constant Values #1138

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tgiphil opened this issue Sep 4, 2023 · 1 comment · Fixed by #1139

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tgiphil commented Sep 4, 2023 •

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Read Hacker's Delight book.

Use the following to determine the magic numbers.

https://github.com/hcs0/Hackers-Delight/blob/master/magicu.c.txt

https://github.com/hcs0/Hackers-Delight/blob/master/magic.c.txt

tgiphil added Optimization Low Priority labels

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tgiphil commented Sep 4, 2023

Additional reference:

https://github.com/jart/cosmopolitan/blob/master/libc/tinymath/magicu.c
https://github.com/jart/cosmopolitan/blob/master/libc/tinymath/magicu.h

tgiphil linked a pull request

that will close this issue

Optimized Division by Constant #1139

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tgiphil closed this as completed in #1139

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