NAME¶

SDL_HasExactlyOneBitSet32 - Determine if a unsigned 32-bit value has exactly one bit set.

HEADER FILE¶

Defined in SDL3/SDL_bits.h

SYNOPSIS¶

#include "SDL3/SDL.h"

SDL_FORCE_INLINE bool SDL_HasExactlyOneBitSet32(Uint32 x);

DESCRIPTION¶

If there are no bits set ( x is zero), or more than one bit set, this returns false. If any one bit is exclusively set, this returns true.

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).

FUNCTION PARAMETERS¶

x

the 32-bit value to examine.

RETURN VALUE¶

Returns true if exactly one bit is set in x , false otherwise.

THREAD SAFETY¶

It is safe to call this function from any thread.

AVAILABILITY¶

This function is available since SDL 3.1.3.