###### (This is the legacy documentation for stable SDL2, the current stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current development version.) # SDL_UnionFRect Calculate the union of two rectangles with float precision. ## Syntax ```c void SDL_UnionFRect(const SDL_FRect * A, const SDL_FRect * B, SDL_FRect * result); ``` ## Function Parameters | | | | -------------- | -------------------------------------------------------------------------------------- | | **A** | an [SDL_FRect](SDL_FRect) structure representing the first rectangle | | **B** | an [SDL_FRect](SDL_FRect) structure representing the second rectangle | | **result** | an [SDL_FRect](SDL_FRect) structure filled in with the union of rectangles `A` and `B` | ## Version This function is available since SDL 2.0.22. ---- [CategoryAPI](CategoryAPI)