struct sxpinfo_struct

Struct Requires USE_RINTERNALS

struct sxpinfo_struct is a struct of 13 members:

  • SEXPTYPE type

  • unsigned int scalar

  • unsigned int obj

  • unsigned int alt

  • unsigned int gp

  • unsigned int mark

  • unsigned int debug

  • unsigned int trace

  • unsigned int spare

  • unsigned int gcgen

  • unsigned int gccls

  • unsigned int named

  • unsigned int extra

struct sxpinfo_struct is used in the definition of SEXPREC_HEADER.

Declaration

struct sxpinfo_struct {
  SEXPTYPE type      :  TYPE_BITS;
  /* ==> (FUNSXP == 99) %% 2^5 == 3 == CLOSXP
   * -> warning: `type' is narrower than values
   *              of its type
   * when SEXPTYPE was an enum */
  unsigned int scalar:  1;
  unsigned int obj   :  1;
  unsigned int alt   :  1;
  unsigned int gp    : 16;
  unsigned int mark  :  1;
  unsigned int debug :  1;
  unsigned int trace :  1;  /* functions and memory tracing */
  unsigned int spare :  1;  /* used on closures and when REFCNT is defined */
  unsigned int gcgen :  1;  /* old generation number */
  unsigned int gccls :  3;  /* node class */
  unsigned int named : NAMED_BITS;
  unsigned int extra : 32 - NAMED_BITS; /* used for immediate bindings */
}; /*     Tot: 64 */

In Rinternals.h.

See also

SEXPTYPE, SEXPREC_HEADER, SEXPREC,