Function mpi::ffi::MPI_Allreduce
source · pub unsafe extern "C" fn MPI_Allreduce(
sendbuf: *const c_void,
recvbuf: *mut c_void,
count: i32,
datatype: *mut ompi_datatype_t,
op: *mut ompi_op_t,
comm: *mut ompi_communicator_t
) -> i32