diff --git a/include/arc/math/rectangle.h b/include/arc/math/rectangle.h
index d2d1bcb..eb2a628 100644
--- a/include/arc/math/rectangle.h
+++ b/include/arc/math/rectangle.h
@@ -21,8 +21,61 @@ typedef struct ARC_URect {
     uint32_t h;
 } ARC_URect;
 
+typedef struct ARC_FRect {
+    float x;
+    float y;
+    float w;
+    float h;
+} ARC_FRect;
+
+/**
+ * @brief centers rect on given bounds
+ * 
+ * @param rect ARC_Rect to be centered
+ * @param bounds ARC_Rect area to center rect on
+ */
+void ARC_Rect_CenterOn(ARC_Rect *rect, ARC_Rect *bounds);
+
+/**
+ * @brief centers rect on given bounds
+ * 
+ * @param rect ARC_FRect to be centered
+ * @param bounds ARC_FRect area to center rect on
+ */
+void ARC_FRect_CenterOn(ARC_FRect *rect, ARC_FRect *bounds);
+
+/**
+ * @brief casts FRect to Rect
+ * 
+ * @param rect ARC_FRect to be casted
+ * 
+ * @return ARC_Rect
+ */
+ARC_Rect ARC_FRect_CastToRect(ARC_FRect *rect);
+
+/**
+ * @brief checks if two ARC_Rects intersect
+ * 
+ * @param rect1 ARC_Rect that will be checked against rect2
+ * @param rect2 ARC_Rect that will be checked against rect1
+ * 
+ * @return 1 if they intersect, 0 if they don't intersect
+ */
 int32_t ARC_Rect_Intersects(ARC_Rect *rect1, ARC_Rect *rect2);
 
+/**
+ * @brief checks if ARC_Rect intersects a line
+ * 
+ * @note need to update this documenation to word it better
+ *
+ * @param rect ARC_Rect that will be checked against line
+ * @param x1 first point's x value
+ * @param y1 first point's y value
+ * @param y2 second point's x value
+ * @param y2 second point's y value
+ * 
+ * @return 1 if they intersect, 0 if they don't intersect
+ */
 int32_t ARC_Rect_LineIntersects(ARC_Rect *rect, int32_t *x1, int32_t *y1, int32_t *x2, int32_t *y2);
 
 #ifdef __cplusplus
diff --git a/include/arc/std/string.h b/include/arc/std/string.h
index f17ad3b..1a604c9 100644
--- a/include/arc/std/string.h
+++ b/include/arc/std/string.h
@@ -82,6 +82,8 @@ uint8_t ARC_String_Equals(ARC_String *first, ARC_String *second);
  * @param string  ARC_string to check
  * @param cstring cstring to check
  * @param length  length of cstring
+ *
+ * @return 1 if match, 0 if they don't match
 */
 uint8_t ARC_String_EqualsCString(ARC_String *string, const char *cstring, uint64_t length);
 
diff --git a/src/math/rectangle.c b/src/math/rectangle.c
index 71c5897..d9b09a3 100644
--- a/src/math/rectangle.c
+++ b/src/math/rectangle.c
@@ -3,6 +3,25 @@
 //VERY TEMP
 // #include <SDL.h>
 
+void ARC_Rect_CenterOn(ARC_Rect *rect, ARC_Rect *bounds){
+    rect->x = ((bounds->x + bounds->w) / 2) - (rect->w / 2);
+    rect->y = ((bounds->y + bounds->h) / 2) - (rect->h / 2);
+}
+
+void ARC_FRect_CenterOn(ARC_FRect *rect, ARC_FRect *bounds){
+    rect->x = ((bounds->x + bounds->w) / 2.0f) - (rect->w / 2.0f);
+    rect->y = ((bounds->y + bounds->h) / 2.0f) - (rect->h / 2.0f);
+}
+
+ARC_Rect ARC_FRect_CastToRect(ARC_FRect *rect){
+    return (ARC_Rect){
+        .x = (int32_t)rect->x,
+        .y = (int32_t)rect->y,
+        .w = (int32_t)rect->w,
+        .h = (int32_t)rect->h,
+    };
+}
+
 int32_t ARC_Rect_Intersects(ARC_Rect *rect1, ARC_Rect *rect2){
     if(rect1->x <= rect2->x + rect2->w && rect1->x + rect1->w >= rect2->x &&
        rect1->y <= rect2->y + rect2->h && rect1->y + rect1->h >= rect2->y){