source definition for R_NilValue/return from TYPEOF(R_NilValue)
Thanks, Ivan. That answers the question perfectly. Dan
On Mon, 2019-12-16 at 13:33 +0300, Ivan Krylov wrote:
On Sun, 15 Dec 2019 10:47:11 +0000 Dan Kortschak <dan.kortschak at adelaide.edu.au> wrote:
I'd like to see the source definition of R_NilValue, but after fair bit of searching I cannot find an obviously location for this. Would someone please point me in the right direction?
As far as I understand, the assignment to R_NilValue happens in src/main/memory.c:
https://github.com/wch/r-source/blob/776929704cb4f9398f52805f48f2c93582ec3d38/src/main/memory.c#L2186
(see the definition of GET_FREE_NODE(s) in the same file) Besides declaring R_NulValue as "extern" and assignments in void InitMemory(), there doesn't seem to be anything else.
-- CRICOS provider code 00123M