SUPPORT:

1. be able to calculate the sat pos of BDS & Galileo
2. be able to Single postiting by GPS & Galileo

headers/deg2dms.h

@@ -10,20 +10,19 @@ typedef struct
     double M;
     double S;    
 }deg2dms;
-
 /* -------------------------------------------------------------------------- */
-/// @brief 将十进制的度数转换为度分秒形式
-/// @param deg2dms 结构体传递参数
-/// @param D 要转换度数
-/// @return 返回自定义结构体包含度，分，秒成员                      
+/// @brief Converts decimal degrees to degree minutes and seconds
+/// @param deg2dms Parameter transfer structure
+/// @param D The number of degrees to convert
+/// @return return structure contain degree minute second                      
 /* -------------------------------------------------------------------------- */
 deg2dms DEG2DMS(deg2dms deg2dms,
                 double D)
 {
-    int sig = D / fabs(D);//符号判断
-    deg2dms.D = (int)(D);//转换为度分秒
-    deg2dms.M = (int)((D - deg2dms.D) * 60);//分秒去除符号格式
-    deg2dms.S = (int)(((D - deg2dms.D) * 60 - deg2dms.M) * 60);
+    int sig = D / fabs(D);//sign judgment
+    deg2dms.D = (int)(D);//to degree
+    deg2dms.M = (int)((D - deg2dms.D) * 60);//to minute
+    deg2dms.S = (int)(((D - deg2dms.D) * 60 - deg2dms.M) * 60);//to second
     deg2dms.M  = deg2dms.M * sig;
     deg2dms.S  = deg2dms.S * sig;