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Simplify joystick hat value assertions
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@ -462,10 +462,11 @@ void _glfwInputJoystickHat(_GLFWjoystick* js, int hat, char value)
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assert(hat >= 0);
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assert(hat < js->hatCount);
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// Valid hat values only use the least significant nibble and have at most two bits
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// set, which can be considered adjacent plus an arbitrary rotation within the nibble
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// Valid hat values only use the least significant nibble
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assert((value & 0xf0) == 0);
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assert((value & ((value << 2) | (value >> 2))) == 0);
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// Valid hat values do not have both bits of an axis set
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assert((value & GLFW_HAT_LEFT) == 0 || (value & GLFW_HAT_RIGHT) == 0);
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assert((value & GLFW_HAT_UP) == 0 || (value & GLFW_HAT_DOWN) == 0);
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base = js->buttonCount + hat * 4;
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