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Add a function to clamp a value to a range. SDL_clamp(x, a, b) is equivalent to SDL_min(a, SDL_max(x, b)): it ensures that x is not smaller than a, nor larger than b. While, as best I can tell, this isn't actually standardised anywhere, it's a very useful function/macro to have.
Simple DirectMedia Layer (SDL) Version 2.0
Simple DirectMedia Layer is a cross-platform development library designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware via OpenGL and Direct3D. It is used by video playback software, emulators, and popular games including Valve's award winning catalog and many Humble Bundle games.
More extensive documentation is available in the docs directory, starting with README.md
Enjoy!
Sam Lantinga (slouken@libsdl.org)
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