```\\nfunction log10(uint256 value) internal pure returns (uint256) {\\n    uint256 result = 0;\\n    unchecked {\\n        if (value >= 10 ** 64) {\\n            value /= 10 ** 64;\\n            result += 64;\\n        }\\n        if (value >= 10 ** 32) {\\n            value /= 10 ** 32;\\n            result += 32;\\n        }\\n        if (value >= 10 ** 16) {\\n            value /= 10 ** 16;\\n            result += 16;\\n        }\\n        if (value >= 10 ** 8) {\\n            value /= 10 ** 8;\\n            result += 8;\\n        }\\n        if (value >= 10 ** 4) {\\n            value /= 10 ** 4;\\n            result += 4;\\n        }\\n        if (value >= 10 ** 2) {\\n            value /= 10 ** 2;\\n            result += 2;\\n        }\\n        if (value >= 10 ** 1) {\\n            result += 1;\\n        }\\n    }\\n    return result;\\n}\\n```\\n