Function writelane_u32 

pub unsafe extern "C" fn writelane_u32(
    value: u32,
    lane: u32,
    default: u32,
) -> u32

Return value for the lane at index lane in the wavefront. Return default for all other lanes.

The value to write and lane select arguments must be uniform across the currently active threads of the current wavefront. Otherwise, the result is undefined.

value is the value returned by lane. default is the value returned by all lanes other than lane.