ripple-binary-codec
Version:
XRP Ledger binary codec
42 lines • 1.52 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.quality = void 0;
const types_1 = require("./types");
const bignumber_js_1 = __importDefault(require("bignumber.js"));
const utils_1 = require("@xrplf/isomorphic/utils");
/**
* class for encoding and decoding quality
*/
class quality {
/**
* Encode quality amount
*
* @param arg string representation of an amount
* @returns Serialized quality
*/
static encode(quality) {
const decimal = (0, bignumber_js_1.default)(quality);
const exponent = ((decimal === null || decimal === void 0 ? void 0 : decimal.e) || 0) - 15;
const qualityString = decimal.times(`1e${-exponent}`).abs().toString();
const bytes = types_1.coreTypes.UInt64.from(BigInt(qualityString)).toBytes();
bytes[0] = exponent + 100;
return bytes;
}
/**
* Decode quality amount
*
* @param arg hex-string denoting serialized quality
* @returns deserialized quality
*/
static decode(quality) {
const bytes = (0, utils_1.hexToBytes)(quality).slice(-8);
const exponent = bytes[0] - 100;
const mantissa = new bignumber_js_1.default(`0x${(0, utils_1.bytesToHex)(bytes.slice(1))}`);
return mantissa.times(`1e${exponent}`);
}
}
exports.quality = quality;
//# sourceMappingURL=quality.js.map