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backend/node_modules/effect/dist/cjs/internal/hashMap/bitwise.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.fromBitmap = fromBitmap;
+exports.hashFragment = hashFragment;
+exports.popcount = popcount;
+exports.toBitmap = toBitmap;
+var _config = require("./config.js");
+/**
+ * Hamming weight.
+ *
+ * Taken from: http://jsperf.com/hamming-weight
+ *
+ * @internal
+ */
+function popcount(x) {
+  x -= x >> 1 & 0x55555555;
+  x = (x & 0x33333333) + (x >> 2 & 0x33333333);
+  x = x + (x >> 4) & 0x0f0f0f0f;
+  x += x >> 8;
+  x += x >> 16;
+  return x & 0x7f;
+}
+/** @internal */
+function hashFragment(shift, h) {
+  return h >>> shift & _config.MASK;
+}
+/** @internal */
+function toBitmap(x) {
+  return 1 << x;
+}
+/** @internal */
+function fromBitmap(bitmap, bit) {
+  return popcount(bitmap & bit - 1);
+}
+//# sourceMappingURL=bitwise.js.map