view test/tstdarg.c @ 874:3454953b3df0

fix inline strinit not yet worked.
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Tue, 01 Apr 2014 23:25:05 +0900
parents 4c13e6784414
children 5313ed059cee
line wrap: on
line source



#include <stdio.h>
#include <stdarg.h>

#if 0
void
print(__builtin_va_list *ap)
{
#if 0
printf(
"    long long_last    %0lx; \n"
"    long float_first  %0lx; \n"
"    long float_last   %0lx; \n"
"    long stack_top    %0lx; \n"
"    long arg          %0lx; \n"
"    long top          %0lx; \n",
ap->long_last    ,
ap->float_first  ,
ap->float_last   ,
ap->stack_top    ,
ap->arg          ,
ap->top         ); 
#endif
}
#else
#define print(d)
#endif

void
var_args(char *numtypes, ...)
{
    int t;
    int i;
    float f;
    double d;
    long long l;
    char *s;
    va_list ap;

    va_start(ap,numtypes);
print(&ap);
    while((t= *numtypes++)) {
	if (t=='i') {
	    i = va_arg(ap,int);
	    printf("#0020:int arg: %d\n",i);
print(&ap);

#if 0        /*  ‘float’ is promoted to ‘double’ when passed through ‘...’ */
	} else if (t=='f') {
	    f = va_arg(ap,float);
	    printf("#0025:float arg: %g\n",f);
#endif
	} else if (t=='d') {
	    d = va_arg(ap,double);
	    printf("#0029:double arg: %g\n",d);
print(&ap);
	} else if (t=='l') {
	    l = va_arg(ap,long long);
	    printf("#0032:long long arg: %lld\n",l);
print(&ap);
	} else if (t=='s') {
	    s = va_arg(ap,char *);
	    printf("#0035:char *arg: %s\n",s);
print(&ap);
	} else {
	    s = va_arg(ap,char *);
	    printf("#0038:arg: error\n");
print(&ap);
	}
    }
}

int
main()
{

    var_args("iiiiii",1,2,3,4,5,6);
    var_args("llllll",(long long)1,(long long)2,(long long)3,(long long)4,(long long)5,(long long)6);
#if 0
    var_args("ffffff",(float)1,(float)2,(float)3,(float)4,(float)5,(float)6);
#endif
    var_args("dddddd",(double)1,(double)2,(double)3,(double)4,(double)5,(double)6);
    var_args("ssssss","1","2","3","4","5","6");
    return 0; 
}