Could you please paraphrase the following sentences starting with the phrase given.
1. A situation in which one operand is of type "long" and the other is of type "ulong" with the binary operators is not permited.
It is not permitted for .....
2. Then it would be permissible if the store to result is visible to the main thread after the store to finished, and hence if the main thread reads the value 0 from the field result.
Then it would be permissible for ...