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/* stdarg
This file is part of the Public Domain C Library (PDCLib).
Permission is granted to use, modify, and / or redistribute at will.
*/
#include <stdarg.h>
#include <limits.h>
#include <float.h>
#ifdef TEST
#include "_PDCLIB_test.h"
typedef int (*intfunc_t)( void );
enum tag_t
{
TAG_END,
TAG_INT,
TAG_LONG,
TAG_LLONG,
TAG_DBL,
TAG_LDBL,
TAG_INTPTR,
TAG_LDBLPTR,
TAG_FUNCPTR
};
static int dummy( void )
{
return INT_MAX;
}
static int test( enum tag_t s, ... )
{
enum tag_t tag = s;
va_list ap;
va_start( ap, s );
for (;;)
{
switch ( tag )
{
case TAG_INT:
{
TESTCASE( va_arg( ap, int ) == INT_MAX );
tag = va_arg( ap, enum tag_t );
break;
}
case TAG_LONG:
{
TESTCASE( va_arg( ap, long ) == LONG_MAX );
tag = va_arg( ap, enum tag_t );
break;
}
case TAG_LLONG:
{
TESTCASE( va_arg( ap, long long ) == LLONG_MAX );
tag = va_arg( ap, enum tag_t );
break;
}
case TAG_DBL:
{
TESTCASE( va_arg( ap, double ) == DBL_MAX );
tag = va_arg( ap, enum tag_t );
break;
}
case TAG_LDBL:
{
TESTCASE( va_arg( ap, long double ) == LDBL_MAX );
tag = va_arg( ap, enum tag_t );
break;
}
case TAG_INTPTR:
{
TESTCASE( *( va_arg( ap, int * ) ) == INT_MAX );
tag = va_arg( ap, enum tag_t );
break;
}
case TAG_LDBLPTR:
{
TESTCASE( *( va_arg( ap, long double * ) ) == LDBL_MAX );
tag = va_arg( ap, enum tag_t );
break;
}
case TAG_FUNCPTR:
{
intfunc_t function;
TESTCASE( ( function = va_arg( ap, intfunc_t ) ) == dummy );
TESTCASE( function() == INT_MAX );
tag = va_arg( ap, enum tag_t );
break;
}
case TAG_END:
{
va_end( ap );
return 0;
}
}
}
}
int main( void )
{
int x = INT_MAX;
long double d = LDBL_MAX;
test( TAG_END );
test( TAG_INT, INT_MAX, TAG_END );
test( TAG_LONG, LONG_MAX, TAG_LLONG, LLONG_MAX, TAG_END );
test( TAG_DBL, DBL_MAX, TAG_LDBL, LDBL_MAX, TAG_END );
test( TAG_INTPTR, &x, TAG_LDBLPTR, &d, TAG_FUNCPTR, dummy, TAG_END );
return TEST_RESULTS;
}
#endif
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