--- layout: stdlib-reference --- # InterlockedCompareExchangeFloatBitwise ## Description Perform an atomic compare and exchange operation on dest. ## Signature

void InterlockedCompareExchangeFloatBitwise(
    float dest,
    float compare_value,
    float value);

void InterlockedCompareExchangeFloatBitwise(
    float dest,
    float compare_value,
    float value,
    out float original_value);

## Parameters #### dest : float The value to perform the atomic operation on. #### compare\_value : float The value to compare dest with. #### value : float The value to store into dest if the compare result is equal. #### original\_value : float The value of dest before the operation. ## Remarks When targeting HLSL, a call to this function will translate to a call to InterlockedCompareExchangeFloatBitwise, which means the comparison is done as a bitwise comparison. On SPIR-V (Vulkan), this function maps to OpAtomicCompareExchange. On Metal and WGSL, this function is not available. On CUDA, this function maps to atomicCAS.