* Determine whether a rectangle has no area. * * A rectangle is considered "empty" for this function if `r` is NULL, or if * `r`'s width and/or hei

Test bit flag. Called internally.

Fast thread ID

NOLINTNEXTLINE(readability-inconsistent-declaration-parameter-name)

* Helper Functions. */

Return flags.

Destruct and free an object.

Return number of geometries.

If found, this locks _the physical device_ this logical device is associated with, before returning.

* Set up a blit between two surfaces -- split into three parts: * The upper part, SDL_BlitSurface(), performs clipping and rectangle * verification.

Return 2D dimensions in pixels.

should hold device->lock before calling.

* GLEW, just like OpenGL or GLU, does not rely on the standard C library. * These functions implement the functionality required in this file. */

this is a weird definition of log2() for which log2(1) = 1, log2(2) = 2, log2(4) = 3 as required by the specification. fast(?) implementation from stb

* Helper Functions. */

fast 0..255 * 0..255 => 0..255 rounded multiplication

Return distance to position.

You must hold pen_device_rwlock before calling this, and result is only safe while lock is held! If SDL isn't initialized, grabbing the NULL lock is a

Return the OpenGL object identifier.

LZ4HC_encodeSequence() : * @return : 0 if ok, * 1 if buffer issue detected */

Return normalized to unit length.

Return the root octant.

Destroy a condition variable

* Get the driver and device index for a joystick instance ID * This should be called while the joystick lock is held, to prevent another thread from

return the guid for this index

* Get the player index of an opened joystick, or -1 if it's not available */