align_test.c

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#include <stddef.h>
#include <stdio.h>


# ifndef PG_ALIGN_128
#define PG_ALIGN_128 8
# endif

/* GCC, Sunpro and XLC support aligned */
#if defined(__GNUC__) || defined(__SUNPRO_C) || defined(__IBMC__)
#define pg_attribute_aligned(a) __attribute__((aligned(a)))
#endif

typedef __int128 int128a
#if defined(pg_attribute_aligned)
pg_attribute_aligned(PG_ALIGN_128)
#endif
;
int128a holder;
void pass_by_val(void *buffer,int128a par) {
   holder=par;
}




int
main()
{
	long int i64 = 97656225L << 12;
	int128a q;	
	pass_by_val(main,(int128a) i64);
	q=(int128a) i64;
	printf("pass int 64 %s\n",(q==holder)?"OK":"FAILED");	
	if (q!=holder)
		return 1;
	return 0;
}