Remove superfluous x/y/z names from Vector2s16, Vector2s32, Vector2s64, and Vector2f32 union data types, since it is extremely unlikely that these extra names will ever be used. Just use names "x" and "y", which are the most likely to be used for these kinds of 2-element vectors.

desmume/src/types.h

@@ -409,9 +409,7 @@ union Vector2s16
 	s16 coord[2];
 	struct { s16 s, t; };
 	struct { s16 u, v; };
-	struct { s16 x, y; } XY;
+	struct { s16 x, y; };
-	struct { s16 y, z; } YZ;
-	struct { s16 x, z; } XZ;
 	
 	u32 value;
 };
@@ -447,9 +445,7 @@ union Vector2s32
 	s32 coord[2];
 	struct { s32 s, t; };
 	struct { s32 u, v; };
-	struct { s32 x, y; } XY;
+	struct { s32 x, y; };
-	struct { s32 y, z; } YZ;
-	struct { s32 x, z; } XZ;
 	
 	u64 value;
 };
@@ -483,9 +479,7 @@ union Vector2s64
 	s64 coord[2];
 	struct { s64 s, t; };
 	struct { s64 u, v; };
-	struct { s64 x, y; } XY;
+	struct { s64 x, y; };
-	struct { s64 y, z; } YZ;
-	struct { s64 x, z; } XZ;
 };
 typedef union Vector2s64 Vector2s64;
 
@@ -517,9 +511,7 @@ union Vector2f32
 	float coord[2];
 	struct { float s, t; };
 	struct { float u, v; };
-	struct { float x, y; } XY;
+	struct { float x, y; };
-	struct { float y, z; } YZ;
-	struct { float x, z; } XZ;
 };
 typedef union Vector2f32 Vector2f32;