message: Experimental compressonator compile fix
diff: @@ -1156,7 +1156,7 @@ void GetProjectedIndex(
  CGV_IMAGE img_diff = image_max-image_min;
  if (img_diff == 0.0f) return;
  - if (isnan(img_diff)) return;
  + if (std::isnan(img_diff)) return;
  image_s = (clusters-1)/img_diff;
  