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A comment on Fast Inverse Square Root. Parent comment

Re:Fast Inverse Square Root by qppo on Monday November 02, 2020 @08:58PM (#24975611)
There's a Torvalds rant about this specific UB and it's how they do it in the Linux kernel.
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Re:Fast Inverse Square Root by sharpneli on Tuesday November 03, 2020 @02:39AM (#24977338)
Linux is written in C. In C99 and later type punning trough unions is well defined operation. No issues there.

It’s C++ that’s lacking this feature. Not C.

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