mrand()

[bunyk]

So, since I'm noob in C++, I decided to try to build just a piece of this, something simple like Fractal.cpp:

$ g++ src/Main\ executable/Fractal.cpp -o fractal && ./fractal && eog fractal.ppm 
/usr/bin/ld: /tmp/ccQOgr8t.o: in function `GetRand(int)':
Fractal.cpp:(.text+0x10): undefined reference to `mrand()'
collect2: error: ld returned 1 exit status

I could not find implementation of this mrand() nowhere, just definitions. Google asks if I ment rand(), so when I define it like

int mrand() 
{
	return rand();
}

I'm able to get some blocky resemblance of a fractal noise using GetFractalVal():

Now I wonder if my mrand() implementation matches one that is linked somehow in Visual Studio? If we change all mrand() calls to rand() would it still build for Windows? And could we add unittests to make sure behaviour does not change when porting? (Like, given this random seed, assert that this fractal is generated).

And why mrand() definitions do not come from some header file related to some DLL, but declared in every file that uses it? (That's really strange for me as a programmer that mostly uses languages where things that imported imported from where they are implemented).

[ByPort]

Found it here:

cossacks-ce/src/Main executable/3DRandMap.cpp

Line 50 in c05b4d5

int mrand()

I’ve mostly been testing it manually so far. I was considering adding unit tests for migrating critical parts, like the inline assembly, but I haven’t had the chance to set up a testing framework yet.

And why mrand() definitions do not come from some header file related to some DLL, but declared in every file that uses it?

I’m also not very experienced with C++, and whenever I try to move such symbols or group them together, it completely breaks the build process. So for now, I’ve decided to leave them as they are.