cv5005

5 ms·

31.
by cv5005 2y ago
Pick an appropriate base type (uintN_t) for a bitset, make an array of those (K * N/4) and write a couple inline functions or macros to set and clear those bits.
32.
by cv5005 2y ago
simd doesnt make much sense as a standard feature/library for a general purpose language. If you're doing simd its because you're doing something particular for a particular machine and you want to leverage platform specifi
33.
by cv5005 2y ago
Not any different from C - a given C compiler + platform will behave completetly deterministically and you can test the output and see what it does, regardless of UB or not.
34.
by cv5005 2y ago
How does the rust compiler assure that when compiling to machine code? Machine code is less safe than C after all.
35.
by cv5005 2y ago
Or it could be made faster because certain manual optimizations become possible. An example would a table of interned strings that you wanna match against (say you're writing a parser). Since standard C says thou shall not compare poin
36.
by cv5005 2y ago
You dont need UB for that. A simple model for both compilers and programmers to understand: "A variable whose address has not been taken need not be reachable via a random pointer". I mean that's how an assembly programmer wo
37.
by cv5005 2y ago
Just make a non null checking version: GetPixelUnsafe() and let the responsibility onto the user to do the null check before the loop. All of these 'problems' have simple and straigtforward workarounds, I'm not convinced thes
38.
by cv5005 2y ago
Then use the register keyword or just reword the standard to assume the register behavior if a variables address hasn't been taken. The majority of useful optimizations can be kept in a "Sane C" with either code style changes
39.
by cv5005 2y ago
Since FILE io is part if standard C I guess you could do a plan9-style interface where you fopen("framebuffer"); and fwrite() means writing a pixel value to the screen. Since io is always implementation defined anyway, it wouldnt
40.
by cv5005 2y ago
Global warming. These days it should be considered immoral to write software that uses inefficient languages/runtimes/abstractions, we simply cannot afford to waste energy doing useless computations anymore.
41.
by cv5005 2y ago
The thing is that modern computer architecture strikes again - like the old linked list vs array thing. Doing a candidate loop over a bounding box with edge equations can be much faster than ye old scanline algorithm because it lends itself