At least in computer games that handle lots of 3d coordinate data, floats instead of doubles were/are used to save memory bandwidth + some exedcution time on at

At least in computer games that handle lots of 3d coordinate data, floats instead of doubles were/are used to save memory bandwidth + some exedcution time on at least old x87 fpus. Which is also why old versions of DirectX (8 or 9) on windows used set the FPU for half-precision math when initialized. But yeah.