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/*\ 
||| This file a part of Pike, and is copyright by Fredrik Hubinette 
||| Pike is distributed as GPL (General Public License) 
||| See the files COPYING and DISCLAIMER for more information. 
\*/ 
 
/* 
 * $Id: pike_macros.h,v 1.9 1998/05/17 22:59:18 grubba Exp $ 
 */ 
#ifndef MACROS_H 
#define MACROS_H 
 
#include <global.h> 
 
#ifdef HAVE_SYS_PARAM_H 
#include <sys/param.h> 
#endif 
 
#include "pike_memory.h" 
 
#define OFFSETOF(str_type, field) ((long)& (((struct str_type *)0)->field)) 
#define BASEOF(ptr, str_type, field)  \ 
((struct str_type *)((char*)ptr - (char*)& (((struct str_type *)0)->field))) 
 
#define NELEM(a) (sizeof (a) / sizeof ((a)[0])) 
#define ALLOC_STRUCT(X) ( (struct X *)xalloc(sizeof(struct X)) ) 
 
#define MINIMUM(X,Y) ((X)<(Y)?(X):(Y)) 
#define MAXIMUM(X,Y) ((X)>(Y)?(X):(Y)) 
 
 
#define is8bitalnum(X)        ("0000000000000000" \ 
                         "0000000000000000" \ 
                         "0000000000000000" \ 
                         "1111111111000000" \ 
                         "0111111111111111" \ 
                         "1111111111100001" \ 
                         "0111111111111111" \ 
                         "1111111111100000" \ 
                         "0000000000000000" \ 
                         "0000000000000000" \ 
                         "1011110101100010" \ 
                         "1011011001101110" \ 
                         "1111111111111111" \ 
                         "1111111011111111" \ 
                         "1111111111111111" \ 
                         "1111111011111111"[((unsigned)(X))&0xff] == '1') 
   
#define isidchar(X) is8bitalnum(X) 
 
#ifndef HAVE_ISGRAPH 
#define isgraph(X)  (ispunct(X) || isupper(X) || islower(X) || isdigit(X)) 
#endif /* !HAVE_ISGRAPH */ 
 
#define ALIGN_BOUND sizeof(char *) 
 
#ifdef __GNUC__ 
#define ALIGNOF(X) __alignof__(X) 
#define HAVE_ALIGNOF 
#else 
#define ALIGNOF(X) (sizeof(X)>ALIGN_BOUND?ALIGN_BOUND:( 1<<my_log2(sizeof(X)))) 
#endif 
 
#define DO_ALIGN(X,Y) (((long)(X)+((Y)-1)) & -(Y)) 
#define MY_ALIGN(X) DO_ALIGN((X),ALIGN_BOUND) 
#define SMART_ALIGN(X,Y) DO_ALIGN((X),(Y)>ALIGN_BOUND? (((Y)-1) & ~(Y)) :ALIGN_BOUND) 
#endif