Typedef struct pointer

A pointer to an object of type SEXPREC, R’s fundamental data type at the C-level. SEXP is short for Symbolic EXPression and is borrowed from Lisp. Note that the internal structure of the SEXPREC is not made available to R Extensions: rather SEXP is an opaque pointer, and the internals can only be accessed by the functions provided.

Declaration

typedef struct SEXPREC *SEXP;

In Rinternals.h.

References

https://cran.r-project.org/doc/manuals/r-release/R-ints.html#SEXPs

See also