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Confused about SDL_SwapLE16
hondres


Joined: 03 Nov 2015
Posts: 2
Post Posted: Tue Nov 03, 2015 7:50 pm
I'm trying to make the open-source game engine Godot compatible with SDL2 gamepad mappings. I'm a bit confused about the way joystick GUIDs are generated.
For example this line:

Code:
*(guid16++) = SDL_SwapLE16(inpid.vendor);


As I understand it, SDL_SwapLE should only byteswap the value on big-endian systems, and the macro does indeed look fine to me.
However when I tried to implement it (on a LE machine), I had to explicitly byteswap those values in order to get the same GUIDs sdl does.
Does anyone have some information on what's going on here? Wink