5f6b223237
Ideally we'd just do this when we need it, but the ostream derivation will be controlled by both global config and per-structure config, so it's hard to know exactly when we need it and when we don't.
40 lines
516 B
C++
40 lines
516 B
C++
#include <cstdarg>
|
|
#include <cstdint>
|
|
#include <cstdlib>
|
|
#include <ostream>
|
|
#include <new>
|
|
|
|
struct Foo {
|
|
enum class Tag {
|
|
A,
|
|
};
|
|
|
|
struct A_Body {
|
|
float _0[20];
|
|
};
|
|
|
|
Tag tag;
|
|
union {
|
|
A_Body a;
|
|
};
|
|
|
|
static Foo A(const float (&_0)[20]) {
|
|
Foo result;
|
|
for (int i = 0; i < 20; i++) {
|
|
::new (&result.a._0[i]) (float)(_0[i]);
|
|
}
|
|
result.tag = Tag::A;
|
|
return result;
|
|
}
|
|
|
|
bool IsA() const {
|
|
return tag == Tag::A;
|
|
}
|
|
};
|
|
|
|
extern "C" {
|
|
|
|
void root(Foo a);
|
|
|
|
} // extern "C"
|