spirv_std::arch

Function atomic_i_decrement

Source 
pub unsafe fn atomic_i_decrement<I: Integer, const SCOPE: u32, const SEMANTICS: u32>(
    ptr: &mut I,
) -> I
Expand description

Perform the following steps atomically with respect to any other atomic accesses within SCOPE to the same location:

  1. load through ptr to get an original value,
  2. get a new value through integer subtraction of 1 from original value, and
  3. store the new value back through ptr.

The result is the original value.