ayanova/src/api/gzutil.js

@@ -306,6 +306,17 @@ export default {
     return ret;
   },
   ///////////////////////////////
+  // Is negative number
+  //
+  //
+  isNegative: function(v) {
+    //null or empty then zero
+    if (!v || v == 0 || v == NaN) {
+      return false;
+    }
+    return parseFloat(v) < 0;
+  },
+  ///////////////////////////////
   // Splice a string
   //changes the content of a string by removing a range of
   // characters and/or adding new characters.