(This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

SDL_RectsEqualEpsilon

Determine whether two floating point rectangles are equal, within some given epsilon.

Header File

Syntax

SDL_FORCE_INLINE bool SDL_RectsEqualEpsilon(const SDL_FRect *a, const SDL_FRect *b, const float epsilon);

Function Parameters

const SDL_FRect *	a	the first rectangle to test.
const SDL_FRect *	b	the second rectangle to test.
const float	epsilon	the epsilon value for comparison.

Return Value

(bool) Returns true if the rectangles are equal, false otherwise.

Remarks

Rectangles are considered equal if both are not NULL and each of their x, y, width and height are within epsilon of each other. If you don't know what value to use for epsilon, you should call the SDL_RectsEqualFloat function instead.

Note that this is a forced-inline function in a header, and not a public API function available in the SDL library (which is to say, the code is embedded in the calling program and the linker and dynamic loader will not be able to find this function inside SDL itself).

Thread Safety

It is safe to call this function from any thread.

Version

This function is available since SDL 3.1.3.