###### (This is the documentation for SDL3, which is the current stable version. [SDL2](https://wiki.libsdl.org/SDL2/) was the previous version!) # SDL_round Round `x` to the nearest integer. ## Header File Defined in [](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_stdinc.h) ## Syntax ```c double SDL_round(double x); ``` ## Function Parameters | | | | | ------ | ----- | --------------------- | | double | **x** | floating point value. | ## Return Value (double) Returns the nearest integer to `x`. ## Remarks Rounds `x` to the nearest integer. Values halfway between integers will be rounded away from zero. Domain: `-INF <= x <= INF` Range: `-INF <= y <= INF`, y integer This function operates on double-precision floating point values, use [SDL_roundf](SDL_roundf) for single-precision floats. To get the result as an integer type, use [SDL_lround](SDL_lround). ## 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_roundf](SDL_roundf) - [SDL_lround](SDL_lround) - [SDL_floor](SDL_floor) - [SDL_ceil](SDL_ceil) - [SDL_trunc](SDL_trunc) ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryStdinc](CategoryStdinc)