Cleanup: comment spelling

source/blender/blenlib/intern/BLI_kdopbvh.c

@@ -210,8 +210,8 @@ MINLINE axis_t max_axis(axis_t a, axis_t b)
 #endif
 
 /**
- * Introsort
- * with permission deriven from the following Java code:
+ * Intro-sort
+ * with permission deriving from the following Java code:
  * http://ralphunden.net/content/tutorials/a-guide-to-introsort/
  * and he derived it from the SUN STL
  */
@@ -603,7 +603,9 @@ static void build_implicit_tree_helper(const BVHTree *tree, BVHBuildHelper *data
   data->remain_leafs = remain + nnodes;
 }
 
-// return the min index of all the leafs archivable with the given branch
+/**
+ * Return the min index of all the leafs achievable with the given branch.
+ */
 static int implicit_leafs_index(const BVHBuildHelper *data, const int depth, const int child_index)
 {
   int min_leaf_index = child_index * data->leafs_per_child[depth - 1];
@@ -623,14 +625,14 @@ static int implicit_leafs_index(const BVHBuildHelper *data, const int depth, con
  * Generalized implicit tree build
  *
  * An implicit tree is a tree where its structure is implied,
- * thus there is no need to store child pointers or indexs.
+ * thus there is no need to store child pointers or indexes.
  * Its possible to find the position of the child or the parent with simple maths
- * (multiplication and adittion).
+ * (multiplication and addition).
  * This type of tree is for example used on heaps..
- * where node N has its childs at indexs N*2 and N*2+1.
+ * where node N has its child at indices N*2 and N*2+1.
  *
- * Although in this case the tree type is general.. and not know until runtime.
- * tree_type stands for the maximum number of childs that a tree node can have.
+ * Although in this case the tree type is general.. and not know until run-time.
+ * tree_type stands for the maximum number of children that a tree node can have.
  * All tree types >= 2 are supported.
  *
  * Advantages of the used trees include:
@@ -1792,7 +1794,7 @@ void BLI_bvhtree_ray_cast_all(BVHTree *tree,
 /* -------------------------------------------------------------------- */
 /** \name BLI_bvhtree_range_query
  *
- * Allocs and fills an array with the indexs of node that are on the given spherical range
+ * Allocates and fills an array with the indices of node that are on the given spherical range
  * (center, radius).
  * Returns the size of the array.
  *

source/blender/blenlib/intern/math_geom.c

@@ -2532,7 +2532,7 @@ bool isect_sweeping_sphere_tri_v3(const float p1[3],
   }
 
   /*---test edges---*/
-  sub_v3_v3v3(e3, v2, v1); /* wasnt yet calculated */
+  sub_v3_v3v3(e3, v2, v1); /* wasn't yet calculated */
 
   /*e1*/
   sub_v3_v3v3(bv, v0, p1);