Changeset 1257:7101e2c3a881 in lemon-0.x for src/lemon/xy.h

Timestamp:

03/25/05 09:21:43 (20 years ago)

Author:

Alpar Juttner

Branch:

default

Phase:

public

Convert:

svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/lemon/trunk@1684

Message:

• several missing 'const' added
• value of xy is undefined by default

File:

• src/lemon/xy.h (modified) (8 diffs)

src/lemon/xy.h

@@ -39 +39 @@
   /// @{
 
-  /// A two dimensional vector (plainvector) implementation
-
-  /// A two dimensional vector (plainvector) implementation
+  /// A simple two dimensional vector (plainvector) implementation
+
+  /// A simple two dimensional vector (plainvector) implementation
   ///with the usual vector
   /// operators.
@@ -55 +55 @@
       T x,y;     
       
-      ///Default constructor: both coordinates become 0
-      xy() : x(0), y(0) {}
+      ///Default constructor
+      xy() {}
 
       ///Constructing the instance from coordinates
@@ -66 +66 @@
 
       ///Gives back the square of the norm of the vector
-      T normSquare(){
+      T normSquare() const {
         return x*x+y*y;
       };
   
       ///Increments the left hand side by u
-      xy<T>& operator +=(const xy<T>& u){
+      xy<T>& operator +=(const xy<T>& u) {
         x += u.x;
         y += u.y;
@@ -78 +78 @@
   
       ///Decrements the left hand side by u
-      xy<T>& operator -=(const xy<T>& u){
+      xy<T>& operator -=(const xy<T>& u) {
         x -= u.x;
         y -= u.y;
@@ -85 +85 @@
 
       ///Multiplying the left hand side with a scalar
-      xy<T>& operator *=(const T &u){
+      xy<T>& operator *=(const T &u) {
         x *= u;
         y *= u;
@@ -92 +92 @@
 
       ///Dividing the left hand side by a scalar
-      xy<T>& operator /=(const T &u){
+      xy<T>& operator /=(const T &u) {
         x /= u;
         y /= u;
@@ -99 +99 @@
   
       ///Returns the scalar product of two vectors
-      T operator *(const xy<T>& u){
+      T operator *(const xy<T>& u) const {
         return x*u.x+y*u.y;
       };
@@ -135 +135 @@
 
       ///Testing equality
-      bool operator==(const xy<T> &u){
+      bool operator==(const xy<T> &u) const {
         return (x==u.x) && (y==u.y);
       };
 
       ///Testing inequality
-      bool operator!=(xy u){
+      bool operator!=(xy u) const {
         return  (x!=u.x) || (y!=u.y);
       };