Function insert 

pub unsafe extern "C" fn insert(
    k: *const c_int,
    lp: *const c_int,
    list: *mut c_int,
    lptr: *mut c_int,
    lnew: *mut c_int,
)

Inserts k as a neighbor of n1.

This subroutine inserts k as a neighbor of n1 following n2, where lp is the list pointer of n2 as a neighbor of n1. Note that, if n2 is the last neighbor of n1, K will become the first neighbor (even if n1 is a boundary node).

This routine is identical to the similarly named routine in TRIPACK.

Arguments

• k - Input. The index of the node to be inserted.
• lp - Input. The list pointer of n2 as a neighbor of n1.
• list[6 * (n - 2)], lptr[6 * (n - 2)], lnew - Input/Output. The data structure defining the triangulation, created by trmesh. On output, updated with the addition of node k