Double precision booleans

[oriolarcas]

C has become my first option for all my projects. I want to thank the vibrant community around it.

I want to propose an enhancement. Boolean variables are stored using one-and-a-half bits, which is fine for most use cases, but technically log2(3) = 1.5849625007 bits... are needed for high precision algorithms.

I suggest introducing double precision booleans, long bool, or doubool, making use of the new five-thirds-of-bit hardware registers, which could catapult C to become the new standard for machine learning and data science.

[stohrendorf]

I would suggest something like bool bool to not introduce another keyword, with a syntax like bool bool foo = true true!.

[zblach]

I believe bool bool is reserved for variable types which may or may not be boolean. +1 for douboul or doboul in American-localized English.

[Rudxain]

I propose #617. But not as a replacement. We need both of these features!