表结构修改

yzg-util-base/src/test/java/helper/TestGetFirst.java

 package helper;
 
+import com.yanzuoguang.util.helper.CalcHelper;
 import com.yanzuoguang.util.helper.StringHelper;
 import org.junit.Test;
 
@@ -13,6 +14,13 @@ public class TestGetFirst {
         Double zeroTo = StringHelper.getFirst(zero);
         System.out.println(first.equals(zeroTo));
     }
+
+    @Test
+    public void testDouble1() {
+        double first = 0;
+        double retValue = 0;
+        System.out.println(CalcHelper.sub(first,retValue));
+    }
     @Test
     public void testFloat() {
         Float statementMoney = -0f;