How to convert a uint256 type integer into a bytes32?

Question

Since both types, uint256's and bytes32's space are 2^256. How to map an uint256 type integer into bytes32 type in Solidity ?

Answer 1

Just use bytes32(u). It's as easy as that because they are both 2^256 (unlike bytes).

No need for a separate function, but to clarify:

function convert(uint256 n) returns (bytes32) {
    return bytes32(n);
}