41 lines
1.3 KiB
Solidity
41 lines
1.3 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.20;
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/**
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* @dev Helper library packing and unpacking multiple values into bytes32
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*/
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library Packing {
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type Uint128x2 is bytes32;
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/// @dev Cast a bytes32 into a Uint128x2
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function asUint128x2(bytes32 self) internal pure returns (Uint128x2) {
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return Uint128x2.wrap(self);
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}
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/// @dev Cast a Uint128x2 into a bytes32
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function asBytes32(Uint128x2 self) internal pure returns (bytes32) {
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return Uint128x2.unwrap(self);
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}
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/// @dev Pack two uint128 into a Uint128x2
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function pack(uint128 first128, uint128 second128) internal pure returns (Uint128x2) {
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return Uint128x2.wrap(bytes32(bytes16(first128)) | bytes32(uint256(second128)));
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}
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/// @dev Split a Uint128x2 into two uint128
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function split(Uint128x2 self) internal pure returns (uint128, uint128) {
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return (first(self), second(self));
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}
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/// @dev Get the first element of a Uint128x2 counting from higher to lower bytes
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function first(Uint128x2 self) internal pure returns (uint128) {
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return uint128(bytes16(Uint128x2.unwrap(self)));
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}
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/// @dev Get the second element of a Uint128x2 counting from higher to lower bytes
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function second(Uint128x2 self) internal pure returns (uint128) {
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return uint128(uint256(Uint128x2.unwrap(self)));
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}
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}
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