How would you do it in pure extemporaneous code? Or as a pure "quasi-Perl sketch with C++ comments"?

References Added Later

• Inline by Ingy
• Inline::C and Inline::C::Cookbook by Ingy et al, recently released by Ed J
• FFI::Platypus by Graham Ollis

• [XS] Manipulating the Stack by syphilis (2023)
• C4244 Warning in inline.h file while using Win64 configuration by MubinSkt (2023)
• XS Modules - why and when? by Bod (2023)

• Need help using Inline::Module with JavaScript::Embedded by cavac (2022)
• Setting the build directory for a module using Inline::C by cavac (2022)
• Better way to force Inline to use compiled binary instead of C source? by vr (2022)

• Inline::C and NULL pointers by markong (2021)
• One-liner to show C struct sizes using Inline by etj (2021)

• Inline::C & Strawberry: can't free a buffer allocated with asprintf by vr (2020)

• Inline::C : passing parameters to functions, modifying by reference by bliako (2021)
• Inline::CUDA : looking for feedback by bliako (2021)
• GCC::Builtins by bliako (2024) - access GCC compiler builtin functions via XS (see Re: Most Significant Set Bit)

• External (extra) files when using Inline::CPP by cavac (2024) - reply from marioroy mentions his MCE Sandbox (Sandboxing with Perl MCE/Inline::C, C/OpenMP, and Codon; see also: popcount function in bits.h and Math::Prime::Util)
• How to do popcount (aka Hamming weight) in Perl (popcount References) by me (2017)

See Also

• Re: Most Significant Set Bit (Bit Twiddling References)

Updated: fixed broken links. Added more references. Adjusted attribution of Inline modules (thanks etj).