From 78b8a376f2a314c377b68437bc88c5ae5429ff41 Mon Sep 17 00:00:00 2001
From: Alex Kulcsar <38046796+alex-kulcsar@users.noreply.github.com>
Date: Tue, 25 Jun 2024 20:32:23 -0400
Subject: [PATCH] Shift must be an integer.

---
 bigint.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/bigint.ts b/bigint.ts
index 51ac162..4a72a34 100644
--- a/bigint.ts
+++ b/bigint.ts
@@ -1082,6 +1082,7 @@ namespace BigNum {
     export function leftShift(x: BigInt, shift: number): BigInt {
         if (shift === 0 || x.length === 0) return x
         if (shift < 0) return rightShift(x, Math.abs(shift))
+        if (Math.round(shift) != shift) throw 'leftShift: shift must be an integer.'
         if (shift > kMaxLengthBits) throw 'leftShift: shift is too large.'
         const digitShift: number = (shift / 30) | 0
         const bitsShift: number = shift % 30
@@ -1207,6 +1208,8 @@ namespace BigNum {
      */
     export function rightShift(x: BigInt, shift: number): BigInt {
         if (x.length === 0 || shift === 0) return x
+        if (Math.round(shift) != shift) throw 'rightShift: shift must be an integer.'
+        if (shift > kMaxLengthBits) throw 'rightShift: shift is too large.'
         if (shift < 0) return leftShift(x, Math.abs(shift))
         const length = x.length
         const sign = x.sign