view release on metacpan or  search on metacpan

share/perl-5.26/strtoull-fix-perl.h  view on Meta::CPAN

#define PTR2IV(p)	INT2PTR(IV,p)
#define PTR2UV(p)	INT2PTR(UV,p)
#define PTR2NV(p)	NUM2PTR(NV,p)
#define PTR2nat(p)	(PTRV)(p)	/* pointer to integer of PTRSIZE */

/* According to strict ANSI C89 one cannot freely cast between
 * data pointers and function (code) pointers.  There are at least
 * two ways around this.  One (used below) is to do two casts,
 * first the other pointer to an (unsigned) integer, and then
 * the integer to the other pointer.  The other way would be
 * to use unions to "overlay" the pointers.  For an example of
 * the latter technique, see union dirpu in struct xpvio in sv.h.
 * The only feasible use is probably temporarily storing
 * function pointers in a data pointer (such as a void pointer). */

#define DPTR2FPTR(t,p) ((t)PTR2nat(p))	/* data pointer to function pointer */
#define FPTR2DPTR(t,p) ((t)PTR2nat(p))	/* function pointer to data pointer */

#ifdef USE_LONG_DOUBLE
#  if LONG_DOUBLESIZE == DOUBLESIZE
#    define LONG_DOUBLE_EQUALS_DOUBLE