30 lines
1.2 KiB
JavaScript
30 lines
1.2 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.readUint64BigEndian = exports.writeUint64BigEndian = exports.writeUint64LittleEndian = void 0;
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const bytes_1 = require("./bytes");
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// TODO handle bigger values than 32 bit
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// For now it's good enough because we only use these functions
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// sequential feed indexes.
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function writeUint64LittleEndian(value, bytes = (0, bytes_1.makeBytes)(8)) {
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const dataView = new DataView(bytes.buffer);
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const valueLower32 = value & 0xffffffff;
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const littleEndian = true;
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dataView.setUint32(0, valueLower32, littleEndian);
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dataView.setUint32(4, 0, littleEndian);
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return bytes;
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}
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exports.writeUint64LittleEndian = writeUint64LittleEndian;
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function writeUint64BigEndian(value, bytes = (0, bytes_1.makeBytes)(8)) {
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const dataView = new DataView(bytes.buffer);
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const valueLower32 = value & 0xffffffff;
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dataView.setUint32(0, 0);
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dataView.setUint32(4, valueLower32);
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return bytes;
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}
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exports.writeUint64BigEndian = writeUint64BigEndian;
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function readUint64BigEndian(bytes) {
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const dataView = new DataView(bytes.buffer);
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return dataView.getUint32(4);
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}
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exports.readUint64BigEndian = readUint64BigEndian;
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