C#中比较浮点类型大小的方法(double float)
 
最近工作需要处理double类型数据，写了些浮点类型比较大小的方法，供参考。

 1     ///<summary>
 2 /// 处理浮点型比较大小的方法
 3 ///</summary>
 4     internal class DoubleUtil
 5     {
 6         // Fields 浮点型的误差
 7         private const double DOUBLE_DELTA = 1E-06;
 8
 9         public static bool AreEqual(double value1, double value2)
10         {
11             return (value1 == value2)
12                 || Math.Abs(value1 - value2) < DOUBLE_DELTA;
13         }
14
15         public static bool GreaterThan(double value1, double value2)
16         {
17             return ((value1 > value2) && !AreEqual(value1, value2));
18         }
19
20         public static bool GreaterThanOrEqual(double value1, double value2)
21         {
22             return (value1 > value2) || AreEqual(value1, value2);
23         }
24
25         public static bool IsZero(double value)
26         {
27             return (Math.Abs(value) < DOUBLE_DELTA);
28         }
29
30         public static bool LessThan(double value1, double value2)
31         {
32             return ((value1 < value2) && !AreEqual(value1, value2));
33         }
34
35         public static bool LessThanOrEqual(double value1, double value2)
36         {
37             return (value1 < value2) || AreEqual(value1, value2);
38         }
39     }