[Robustness] use cached Number.isNaN

paulmillr · Mar 8, 2016 · 968ebdd · 968ebdd
1 parent 28b803f
commit 968ebdd
Showing 1 changed file with 6 additions and 6 deletions.
diff --git a/es6-shim.js b/es6-shim.js
@@ -217,7 +217,7 @@
   var _sign = isCallable(Math.sign) ? Math.sign : function sign(value) {
     var number = Number(value);
     if (number === 0) { return number; }
-    if (Number.isNaN(number)) { return number; }
+    if (numberIsNaN(number)) { return number; }
     return number < 0 ? -1 : 1;
   };
 
@@ -1834,7 +1834,7 @@
   var MathShims = {
     acosh: function acosh(value) {
       var x = Number(value);
-      if (Number.isNaN(x) || value < 1) { return NaN; }
+      if (numberIsNaN(x) || value < 1) { return NaN; }
       if (x === 1) { return 0; }
       if (x === Infinity) { return x; }
       return _log(x / Math.E + _sqrt(x + 1) * _sqrt(x - 1) / Math.E) + 1;
@@ -1850,7 +1850,7 @@
 
     atanh: function atanh(value) {
       var x = Number(value);
-      if (Number.isNaN(x) || x < -1 || x > 1) {
+      if (numberIsNaN(x) || x < -1 || x > 1) {
         return NaN;
       }
       if (x === -1) { return -Infinity; }
@@ -1888,7 +1888,7 @@
     cosh: function cosh(value) {
       var x = Number(value);
       if (x === 0) { return 1; } // +0 or -0
-      if (Number.isNaN(x)) { return NaN; }
+      if (numberIsNaN(x)) { return NaN; }
       if (!globalIsFinite(x)) { return Infinity; }
       if (x < 0) { x = -x; }
       if (x > 21) { return Math.exp(x) / 2; }
@@ -1941,7 +1941,7 @@
 
     log1p: function log1p(value) {
       var x = Number(value);
-      if (x < -1 || Number.isNaN(x)) { return NaN; }
+      if (x < -1 || numberIsNaN(x)) { return NaN; }
       if (x === 0 || x === Infinity) { return x; }
       if (x === -1) { return -Infinity; }
 
@@ -1962,7 +1962,7 @@
 
     tanh: function tanh(value) {
       var x = Number(value);
-      if (Number.isNaN(x) || x === 0) { return x; }
+      if (numberIsNaN(x) || x === 0) { return x; }
       // can exit early at +-20 as JS loses precision for true value at this integer
       if (x >= 20) { return 1; }
       if (x <= -20) { return -1; }