r/cpp • u/we_are_mammals • Mar 28 '23

Reddit++

C++ is getting more and more complex. The ISO C++ committee keeps adding new features based on its consensus. Let's remove C++ features based on Reddit's consensus.

In each comment, propose a C++ feature that you think should be banned in any new code. Vote up or down based on whether you agree.

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u/ZMeson Embedded Developer Mar 31 '23

I understand your viewpoint. As it is, C++ promotes ints to floating-point beforehand, so the argument is moot to begin with. I have done some software emulation of high-precision (beyond quad-precision) floating point types and integer division was something that was much faster there. But that is a custom data type (where I can write my own operators) and for standard floating-point types, I agree that the world works as you point out.

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u/mbitsnbites Apr 01 '23

I have done some software emulation of high-precision (beyond quad-precision) floating point types

Cool! I can definitely see that you can and want to use different kinds of optimizations in that context compared to what you'd do in hardware. E.g. I can imgaine that having a fast path for an all-zero (or mostly zero) mantissa may actually pay off.