feat(binary): add shiftRL()

thi-ng · Dec 16, 2021 · 804565e · 804565e
1 parent 1ba92c6
commit 804565e
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/packages/binary/src/rotate.ts b/packages/binary/src/rotate.ts
@@ -17,3 +17,12 @@ export const rotateLeft = (x: number, n: Bit) =>
  */
 export const rotateRight = (x: number, n: Bit) =>
     ((x >>> n) | (x << (32 - n))) >>> 0;
+
+/**
+ * Shifts `x` by `n` bits left or right. If `n` >= 0, the value will be `>>>`
+ * shifted to right, if `n` < 0 the value will be shifted left.
+ *
+ * @param x
+ * @param n
+ */
+export const shiftRL = (x: number, n: number) => (n < 0 ? x << -n : x >>> n);