My interpretation of Random.rotation and Random.rotationUniform. Right or wrong ?

Dear forum readers,

For modding reasons, I'm rewriting Unity's UnityEngine.Random class. I think I got everything, except maybe the Random.rotation and Random.rotationUniform properties.

Do these rewrites seem legit to you ? The only difference between the two being in the do-while condition.

 public sealed partial class Random
 {
     public static Quaternion rotation
     {
         get
         {
             float norm, w, x, y, z;

             do
             {
                 w = Range(-1f, 1f);
                 x = Range(-1f, 1f);
                 y = Range(-1f, 1f);
                 z = Range(-1f, 1f);
                 norm = w * w + x * x + y * y + z * z;
             }
             while (norm == 0f);
             norm = (float)System.Math.Sqrt(norm);
             Quaternion quat;
             quat.w = w / norm;
             quat.x = x / norm;
             quat.y = y / norm;
             quat.z = z / norm;
             return quat;
         }
     }


     public static Quaternion rotationUniform
     {
         get
         {
             float norm, w, x, y, z;

             do
             {
                 w = Range(-1f, 1f);
                 x = Range(-1f, 1f);
                 y = Range(-1f, 1f);
                 z = Range(-1f, 1f);
                 norm = w * w + x * x + y * y + z * z;
             }
             while ((norm > 1f) || (norm == 0f));
             norm = (float)System.Math.Sqrt(norm);
             Quaternion quat;
             quat.w = w / norm;
             quat.x = x / norm;
             quat.y = y / norm;
             quat.z = z / norm;
             return quat;
         }
     }
 }