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/* Simple test of vararg passing for problematic types with and without
double values passed between them. */
#include "dfp-dbg.h"
#include <stdarg.h>
DTYPE a[10];
double b[10];
union U {
DTYPE d;
unsigned int i[INTS];
};
void
compare (double r, double s, unsigned int *p, unsigned int *q, int n, int line)
{
int i;
for (i = 0; i < n; i++)
if (r != s || p[i] != q[i])
#ifdef DBG
{
int j;
failures++;
printf ("line %-3d", line);
for (j = 0; j < n; j++)
printf (" %08x", p[j]);
printf (" %10.2g\n ", r);
for (j = 0; j < n; j++)
printf (" %08x", q[j]);
printf (" %10.2g\n\n", s);
return;
}
#else
__builtin_abort ();
#endif
}
void
bar0 (int n, ...)
{
union U u;
int j;
va_list ap;
va_start (ap, n);
for (j = 0; j < n; j++)
a[j] = va_arg (ap, DTYPE);
va_end (ap);
}
void
bar1 (int n, ...)
{
union U u;
int j;
va_list ap;
va_start (ap, n);
for (j = 0; j < n; j++)
{
a[j] = va_arg (ap, DTYPE);
b[j] = va_arg (ap, double);
}
va_end (ap);
}
void
bar2 (int n, ...)
{
union U u;
int j;
va_list ap;
va_start (ap, n);
for (j = 0; j < n; j++)
{
b[j] = va_arg (ap, double);
a[j] = va_arg (ap, DTYPE);
}
va_end (ap);
}
void
doit ()
{
DTYPE x, y, z;
union U u1, u2;
/* Sanity check that test setup is right, especially for long double
which can be changed by command line option. */
if (INTS * 4 != sizeof (DTYPE))
{
#ifdef DBG
printf ("test error: INTS = %d, sizeof (DTYPE) = %d\n",
INTS, sizeof (DTYPE));
#endif
__builtin_abort ();
}
x = ONE / THREE;
y = ONE / SEVEN;
z = ONE / ELEVEN;
bar0 (1, x);
u1.d = x; u2.d = a[0]; compare (0.0, 0.0, u1.i, u2.i, INTS, __LINE__);
bar0 (2, x, y);
u1.d = x; u2.d = a[0]; compare (0.0, 0.0, u1.i, u2.i, INTS, __LINE__);
u1.d = y; u2.d = a[1]; compare (0.0, 0.0, u1.i, u2.i, INTS, __LINE__);
bar0 (3, x, y, z);
u1.d = x; u2.d = a[0]; compare (0.0, 0.0, u1.i, u2.i, INTS, __LINE__);
u1.d = y; u2.d = a[1]; compare (0.0, 0.0, u1.i, u2.i, INTS, __LINE__);
u1.d = z; u2.d = a[2]; compare (0.0, 0.0, u1.i, u2.i, INTS, __LINE__);
bar1 (1, x, 1.5);
u1.d = x; u2.d = a[0]; compare (1.5, b[0], u1.i, u2.i, INTS, __LINE__);
bar1 (2, x, 1.5, y, 2.5);
u1.d = x; u2.d = a[0]; compare (1.5, b[0], u1.i, u2.i, INTS, __LINE__);
u1.d = y; u2.d = a[1]; compare (2.5, b[1], u1.i, u2.i, INTS, __LINE__);
bar1 (3, x, 1.5, y, 2.5, z, 3.5);
u1.d = x; u2.d = a[0]; compare (1.5, b[0], u1.i, u2.i, INTS, __LINE__);
u1.d = y; u2.d = a[1]; compare (2.5, b[1], u1.i, u2.i, INTS, __LINE__);
u1.d = z; u2.d = a[2]; compare (3.5, b[2], u1.i, u2.i, INTS, __LINE__);
bar2 (1, 1.5, x);
u1.d = x; u2.d = a[0]; compare (1.5, b[0], u1.i, u2.i, INTS, __LINE__);
bar2 (2, 1.5, x, 2.5, y);
u1.d = x; u2.d = a[0]; compare (1.5, b[0], u1.i, u2.i, INTS, __LINE__);
u1.d = y; u2.d = a[1]; compare (2.5, b[1], u1.i, u2.i, INTS, __LINE__);
bar2 (3, 1.5, x, 2.5, y, 3.5, z);
u1.d = x; u2.d = a[0]; compare (1.5, b[0], u1.i, u2.i, INTS, __LINE__);
u1.d = y; u2.d = a[1]; compare (2.5, b[1], u1.i, u2.i, INTS, __LINE__);
u1.d = z; u2.d = a[2]; compare (3.5, b[2], u1.i, u2.i, INTS, __LINE__);
}
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