The SEXPTYPE Structure

The SEXPTYPE Structure

SEXPTYPE

Format

A C struct.

C API

#include <Rinternals.h>

Availalble SEXTYPE types

  • NILSXP NULL

  • SYMSXP name/symbol

  • LISTSXP pairlist

  • CLOSXP function or function closure

  • ENVSXP environment

  • PROMSXP promises

  • LANGSXP language objects

  • SPECIALSXP special functions

  • BUILTINSXP builtin functions

  • CHARSXP internal character strings

  • LGLSXP logical vectors

  • INTSXP integer vectors

  • REALSXP numeric vectors (with storage mode double)

  • CPLXSXP complex vectors

  • STRSXP character vectors

  • DOTSXP dot-dot-dot (...) object

  • ANYSXP make "any" args work

  • VECSXP list (generic vector)

  • EXPRSXP expression vector

  • BCODESXP byte code

  • EXTPTRSXP external pointer

  • WEAKREFSXP weak reference

  • RAWSXP raw vector

  • S4SXP S4 classes not of simple type

See also

The SEXPTYPE is documented in Section 'Details of R types' in 'R Language Definition' and Section 'SEXPTYPEs' in 'R Internals'.