Allow { s: null, e: null, c: null } (NaN)

MikeMcl · Feb 18, 2019 · 8c34396 · 8c34396
1 parent cefa7c8
commit 8c34396
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/bignumber.js b/bignumber.js
@@ -196,7 +196,7 @@
 
         // Duplicate.
         if (n instanceof BigNumber 
-          || (n != null && n.s != null && n.e != null && n.c != null)) {
+          || (n && typeof n.s !== 'undefined' && typeof n.e !== 'undefined' && typeof n.c !== 'undefined')) {
           x.s = n.s;
           x.e = n.e;
           x.c = (n = n.c) ? n.slice() : n;

diff --git a/test/methods/BigNumber.js b/test/methods/BigNumber.js
@@ -201,6 +201,7 @@ Test('bigNumber', function () {
 
     t('100002222.2222333322', new BigNumber({ s: 1, e: 8, c: [100002222, 22223333220000] }).toString())
     t('7777777777.123123123', new BigNumber({ s: 1, e: 9, c: [7777777777, 12312312300000] }).toString())
+    t('NaN', new BigNumber({ s: null, e: null, c: null }).toString())
 
     // Base-conversion tests