Function gmsh_sys::gmshModelMeshPreallocateBarycenters

pub unsafe extern "C" fn gmshModelMeshPreallocateBarycenters(
    elementType: c_int, 
    barycenters: *mut *mut f64, 
    barycenters_n: *mut usize, 
    tag: c_int, 
    ierr: *mut c_int
)

Preallocate data before calling getBarycenters with numTasks > 1. For C and C++ only.