R's boolean type

Rboolean is an enumerated type for boolean variables. The symbolic constants defined by this enumerated type are: FALSE (= 0) and TRUE (= 1).

Declaration

typedef enum { FALSE = 0, TRUE /*, MAYBE */ } Rboolean;

In Boolean.h.

Examples

rboolean <- inline::cfunction(NULL,
 ' Rboolean false_x = FALSE;
   Rboolean true_x = TRUE;
   Rprintf("Rboolean FALSE is: %d\\n", false_x);
   Rprintf("Rboolean TRUE is: %d\\n", true_x);
   return R_NilValue;
 ' Rboolean false_x = FALSE;
   Rboolean true_x = TRUE;
   Rprintf("Rboolean FALSE is: %d\\n", false_x);
   Rprintf("Rboolean TRUE is: %d\\n", true_x);
   return R_NilValue;
 ')

invisible(rboolean())
#> Rboolean FALSE is: 0
#> Rboolean TRUE is: 1