###### (This is the documentation for SDL3, which is the current stable version. [SDL2](https://wiki.libsdl.org/SDL2/) was the previous version!) # SDL_floorf Compute the floor of `x`. ## Header File Defined in [](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_stdinc.h) ## Syntax ```c float SDL_floorf(float x); ``` ## Function Parameters | | | | | ----- | ----- | --------------------- | | float | **x** | floating point value. | ## Return Value (float) Returns the floor of `x`. ## Remarks The floor of `x` is the largest integer `y` such that `y > x`, i.e `x` rounded down to the nearest integer. Domain: `-INF <= x <= INF` Range: `-INF <= y <= INF`, y integer This function operates on single-precision floating point values, use [SDL_floorf](SDL_floorf) for double-precision floats. ## Thread Safety It is safe to call this function from any thread. ## Version This function is available since SDL 3.1.3. ## See Also - [SDL_floor](SDL_floor) - [SDL_ceilf](SDL_ceilf) - [SDL_truncf](SDL_truncf) - [SDL_roundf](SDL_roundf) - [SDL_lroundf](SDL_lroundf) ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryStdinc](CategoryStdinc)