// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;/**
* @dev Standard math utilities missing in the Solidity language.
*/libraryMath{
/**
* @dev Returns the largest of two numbers.
*/functionmax(uint256 a, uint256 b) internalpurereturns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/functionmin(uint256 a, uint256 b) internalpurereturns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/functionaverage(uint256 a, uint256 b) internalpurereturns (uint256) {
// (a + b) / 2 can overflow, so we distributereturn (a /2) + (b /2) + ((a %2+ b %2) /2);
}
}
Contract Source Code
File 13 of 18: RelayerManager.sol
Contract Source Code
File 14 of 18: SafeCast.sol
// SPDX-License-Identifier: MITpragmasolidity ^0.8.0;/**
* @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
* checks.
*
* Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
* easily result in undesired exploitation or bugs, since developers usually
* assume that overflows raise errors. `SafeCast` restores this intuition by
* reverting the transaction when such an operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*
* Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
* all math on `uint256` and `int256` and then downcasting.
*/librarySafeCast{
/**
* @dev Returns the downcasted uint128 from uint256, reverting on
* overflow (when the input is greater than largest uint128).
*
* Counterpart to Solidity's `uint128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*/functiontoUint128(uint256 value) internalpurereturns (uint128) {
require(value <2**128, "SafeCast: value doesn\'t fit in 128 bits");
returnuint128(value);
}
/**
* @dev Returns the downcasted uint64 from uint256, reverting on
* overflow (when the input is greater than largest uint64).
*
* Counterpart to Solidity's `uint64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*/functiontoUint64(uint256 value) internalpurereturns (uint64) {
require(value <2**64, "SafeCast: value doesn\'t fit in 64 bits");
returnuint64(value);
}
/**
* @dev Returns the downcasted uint32 from uint256, reverting on
* overflow (when the input is greater than largest uint32).
*
* Counterpart to Solidity's `uint32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*/functiontoUint32(uint256 value) internalpurereturns (uint32) {
require(value <2**32, "SafeCast: value doesn\'t fit in 32 bits");
returnuint32(value);
}
/**
* @dev Returns the downcasted uint16 from uint256, reverting on
* overflow (when the input is greater than largest uint16).
*
* Counterpart to Solidity's `uint16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*/functiontoUint16(uint256 value) internalpurereturns (uint16) {
require(value <2**16, "SafeCast: value doesn\'t fit in 16 bits");
returnuint16(value);
}
/**
* @dev Returns the downcasted uint8 from uint256, reverting on
* overflow (when the input is greater than largest uint8).
*
* Counterpart to Solidity's `uint8` operator.
*
* Requirements:
*
* - input must fit into 8 bits.
*/functiontoUint8(uint256 value) internalpurereturns (uint8) {
require(value <2**8, "SafeCast: value doesn\'t fit in 8 bits");
returnuint8(value);
}
/**
* @dev Converts a signed int256 into an unsigned uint256.
*
* Requirements:
*
* - input must be greater than or equal to 0.
*/functiontoUint256(int256 value) internalpurereturns (uint256) {
require(value >=0, "SafeCast: value must be positive");
returnuint256(value);
}
/**
* @dev Returns the downcasted int128 from int256, reverting on
* overflow (when the input is less than smallest int128 or
* greater than largest int128).
*
* Counterpart to Solidity's `int128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*
* _Available since v3.1._
*/functiontoInt128(int256 value) internalpurereturns (int128) {
require(value >=-2**127&& value <2**127, "SafeCast: value doesn\'t fit in 128 bits");
returnint128(value);
}
/**
* @dev Returns the downcasted int64 from int256, reverting on
* overflow (when the input is less than smallest int64 or
* greater than largest int64).
*
* Counterpart to Solidity's `int64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*
* _Available since v3.1._
*/functiontoInt64(int256 value) internalpurereturns (int64) {
require(value >=-2**63&& value <2**63, "SafeCast: value doesn\'t fit in 64 bits");
returnint64(value);
}
/**
* @dev Returns the downcasted int32 from int256, reverting on
* overflow (when the input is less than smallest int32 or
* greater than largest int32).
*
* Counterpart to Solidity's `int32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*
* _Available since v3.1._
*/functiontoInt32(int256 value) internalpurereturns (int32) {
require(value >=-2**31&& value <2**31, "SafeCast: value doesn\'t fit in 32 bits");
returnint32(value);
}
/**
* @dev Returns the downcasted int16 from int256, reverting on
* overflow (when the input is less than smallest int16 or
* greater than largest int16).
*
* Counterpart to Solidity's `int16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*
* _Available since v3.1._
*/functiontoInt16(int256 value) internalpurereturns (int16) {
require(value >=-2**15&& value <2**15, "SafeCast: value doesn\'t fit in 16 bits");
returnint16(value);
}
/**
* @dev Returns the downcasted int8 from int256, reverting on
* overflow (when the input is less than smallest int8 or
* greater than largest int8).
*
* Counterpart to Solidity's `int8` operator.
*
* Requirements:
*
* - input must fit into 8 bits.
*
* _Available since v3.1._
*/functiontoInt8(int256 value) internalpurereturns (int8) {
require(value >=-2**7&& value <2**7, "SafeCast: value doesn\'t fit in 8 bits");
returnint8(value);
}
/**
* @dev Converts an unsigned uint256 into a signed int256.
*
* Requirements:
*
* - input must be less than or equal to maxInt256.
*/functiontoInt256(uint256 value) internalpurereturns (int256) {
require(value <2**255, "SafeCast: value doesn't fit in an int256");
returnint256(value);
}
}