1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
|
#define GNUC_VERSION (__GNUC__*1000 + __GNUC_MAJOR__*10)
#if (GNUC_VERSION >= 4060) || defined(__clang__)
# pragma GCC diagnostic ignored "-Wdeprecated"
#endif
/* Verify that the __float128 type works for unions and assignment.
This allows for transfers between __float128 ands vector types as
casts between __float128 scalars and vectors of any type are not
allowed.
This normally requires -mfloat128. Later versions of clang may
also require -mcpu=power9. */
typedef union
{
__vector __int128 vx1;
#if defined(__FLOAT128__)
__float128 vf1;
#endif
} __VF_128;
int main(int argc, char* argv[])
{
#if defined(__FLOAT128__)
{
__VF_128 xxx;
xxx.vx1 = (__vector __int128)(__int128)0LL;
__float128 fff = xxx.vf1;
return 0;
}
#else
int x[-1]; // fail compile
#endif
return -1;
}
|