This is from accepted C++20 proposal:
```
union pony {
double celestia = 0.;
short luna; // padded
};
atomic<pony> princesses = ATOMIC_VAR_INIT({});
bool party(pony desired) {
pony expected;
return princesses.compare_exchange_strong(expected, desired);
}
```
https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0528r3.html
uis /
npub10k…5fay4
2024-07-08 08:14:29
Author Public Key
npub10ks6wrxq5hnarf6vgzesn5t253xphrhe5gtxpq0gczy24dx45gaqj5fay4Seen on
wss://relay.nostr.bandPublished at
2024-07-08 08:14:29Event JSON
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"id": "49a46d2cca019dd669f35a4d8e2276a0ca9a09edbff1318662dd323d72a4a918",
"pubkey": "7da1a70cc0a5e7d1a74c40b309d16aa44c1b8ef9a2166081e8c088aab4d5a23a",
"created_at": 1720426469,
"kind": 1,
"tags": [
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"content": "This is from accepted C++20 proposal:\n\n```\nunion pony {\n double celestia = 0.;\n short luna; // padded\n};\natomic\u003cpony\u003e princesses = ATOMIC_VAR_INIT({});\n\nbool party(pony desired) {\n pony expected;\n return princesses.compare_exchange_strong(expected, desired);\n}\n```\n\nhttps://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0528r3.html",
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}