Decades of C programming, and I guess by pure luck I don't think I've encountered this gotcha before:

You can't have function pointer struct members named anything that collides with a macro name.

You can define them, but they'll be difficult to call, requiring a proxy variable.

Since the C standard allows many of the standard library interfaces to be defined as either a function or a macro, all of them are best avoided.

E.g. p->isalnum(c) might or might not work, depending on includes.

#C

Decades of C programming, and I guess by pure luck I don't think I've encountered this gotcha before:

You can't have function pointer struct members named anything that collides with a macro name.

You can define them, but they'll be difficult to call, requiring a proxy variable.

Since the C standard allows many of the standard library interfaces to be defined as either a function or a macro, all of them are best avoided.

E.g. p->isalnum(c) might or might not work, depending on includes.

#C

The bzip2 crate switches from C to 100% Rust, https://trifectatech.org/blog/bzip2-crate-switches-from-c-to-rust/.

Use less memory. Faster to run. Simpler cross-compilation. That’s it.

The crate has been audited too, neat!

#RustLang#c #bzip2 #compression

Why did IEEE specify sqrt(-0) to be -0?! That's … surprising when applied to the interpretation of -0 in the context of complex numbers:
sqrt(complex{-0,+0}) is complex{+0,+0}.
And also pow(-0, 0.5) is +0.
If anything sqrt(-0) should be NaN, but why -0?

#floatingpoint #iec60559 #ieee754 #CPlusPlus #C#cpp

Owi

https://github.com/OCamlPro/owi

Symbolic execution for #Wasm, #C, C++, #Rust and #Zig

"#Owi is an open-source framework for advanced #WebAssembly analysis and manipulation, with a focus on practical symbolic execution and robust tooling. It is designed for researchers, engineers, programming language enthusiasts and practitioners requiring precise, flexible, and extensible support program reasoning."

#FormalVerification#SoftwareTesting#Testing#SoftwareEngineering #RustLang#ZigLang

The bzip2 crate switches from C to 100% Rust, https://trifectatech.org/blog/bzip2-crate-switches-from-c-to-rust/.

Use less memory. Faster to run. Simpler cross-compilation. That’s it.

The crate has been audited too, neat!

#RustLang#c #bzip2 #compression

Why did IEEE specify sqrt(-0) to be -0?! That's … surprising when applied to the interpretation of -0 in the context of complex numbers:
sqrt(complex{-0,+0}) is complex{+0,+0}.
And also pow(-0, 0.5) is +0.
If anything sqrt(-0) should be NaN, but why -0?

#floatingpoint #iec60559 #ieee754 #CPlusPlus #C#cpp

Owi

https://github.com/OCamlPro/owi

Symbolic execution for #Wasm, #C, C++, #Rust and #Zig

"#Owi is an open-source framework for advanced #WebAssembly analysis and manipulation, with a focus on practical symbolic execution and robust tooling. It is designed for researchers, engineers, programming language enthusiasts and practitioners requiring precise, flexible, and extensible support program reasoning."

#FormalVerification#SoftwareTesting#Testing#SoftwareEngineering #RustLang#ZigLang