Yesterday, I learned that I had a completely wrong concept in mind of what typecasting in #C actually is.
Now, I learned about #punning, a ridiculously cumbersome way to save raw data of a variable of one type into memory of another type (say, I have `floats` and need to save them in a `uint32_t` typed memory space).
Granted, I am stupid, because instead of this, I could simply have two or more pointers to the memory region. One as type `uint32_t`, and one as `float`.
Still, both ways feel weirdly far-from-hardware, and thus un-C-ish.
Like, when I get to mess up memory, why make it so cumbersome?
Also: I hereby advocate to add #hardwarenah (adj.) to the English language.
@cweickhmann Having two pointers that alias each other and which are not of compatible types isn't really allowed and one reason why some code breaks when -fstrict-aliasing is active.
@pancomputans The whole reason I am doing this is to save a bunch of `float` settings to an EEPROM. But then I also want to save (and calculate) a CRC of the values to make sure, it does not load garbage.
Do you have an idea how to do this in a smart and reliable way?
@cweickhmann @pancomputans put your floats in a struct and call crc on the struct pointer and sizeof *pointer.
