[tutorials] Compile issue related to random number generation

Tried to compile the tutorials via the .ci/scripts/build_tutorials.sh with Clang 13 (default Clang on Ubuntu 21.10)

error: implicit conversion from 'int' to 'float' changes value from 2147483647 to 2147483648 [-Werror,-Wimplicit-const-int-float-conversion]
      n_cloud_b[i].normal[2] = 1024 * rand () / (RAND_MAX + 1.0f);
                                                 ^~~~~~~~ ~
/usr/include/stdlib.h:86:18: note: expanded from macro 'RAND_MAX'
#define RAND_MAX        2147483647
                        ^~~~~~~~~~

Result of building all tutorials:

Tutorial build summary
----------------------

alignment_prerejective                          🗸  
bare_earth                                      🗸  
bspline_fitting                                 🗸  
cloud_viewer                                    🗸  
cluster_extraction                              🗸  
concatenate_clouds                              𐄂  build error
concatenate_fields                              𐄂  build error
concatenate_points                              𐄂  build error
concave_hull_2d                                 🗸  
conditional_euclidean_clustering                𐄂  build error
conditional_removal                             𐄂  build error
convex_hull_2d                                  🗸  
correspondence_grouping                         🗸  
cylinder_segmentation                           🗸  
davidsdk                                        𐄂  cmake error
don_segmentation                                𐄂  build error
ensenso_cameras                                 𐄂  cmake error
extract_indices                                 🗸  
function_filter                                 🗸  
global_hypothesis_verification                  🗸  
gpu                                             𐄂  cmake error
greedy_projection                               🗸  
ground_based_rgbd_people_detection              🗸  
iccv2011                                        🗸  
implicit_shape_model                            🗸  
interactive_icp                                 🗸  
iros2011                                        𐄂  build error
iterative_closest_point                         𐄂  build error
kdtree_search                                   𐄂  build error
matrix_transform                                🗸  
min_cut_segmentation                            🗸  
model_outlier_removal                           𐄂  build error
moment_of_inertia                               🗸  
narf_descriptor_visualization                   🗸  
narf_feature_extraction                         🗸  
narf_keypoint_extraction                        🗸  
normal_distributions_transform                  🗸  
normal_estimation_using_integral_images         🗸  
octree_change_detection                         𐄂  build error
octree_search                                   𐄂  build error
openni_grabber                                  🗸  
openni_narf_keypoint_extraction                 🗸  
openni_range_image_visualization                🗸  
pairwise_incremental_registration               🗸  
passthrough                                     𐄂  build error
pcd_read                                        🗸  
pcd_write                                       𐄂  build error
pcl_painter2D                                   🗸  
pcl_plotter                                     🗸  
pcl_visualizer                                  🗸  
planar_segmentation                             𐄂  build error
point_cloud_compression                         🗸  
project_inliers                                 𐄂  build error
qt_colorize_cloud                               𐄂  build error
qt_visualizer                                   𐄂  build error
radius_outlier_removal                          𐄂  build error
random_sample_consensus                         🗸  
range_image_border_extraction                   🗸  
range_image_creation                            🗸  
range_image_visualization                       🗸  
region_growing_rgb_segmentation                 🗸  
region_growing_segmentation                     🗸  
registration_api                                🗸  
remove_outliers                                 𐄂  build error
resampling                                      𐄂  build error
rops_feature                                    🗸  
statistical_removal                             🗸  
stick_segmentation                              🗸  
supervoxel_clustering                           🗸  
template_alignment                              🗸  
tracking                                        🗸  
vfh_recognition                                 🗸  
voxel_grid                                      🗸  

Succeeded building 49 out of 73 tutorials
Excluded or skipped 0 tutorials

As far as I remember: Should the tutorials are be build on the CI? On Azure I don't see it, even tutorials.yaml still exists.

Start by running .ci/scripts/build_tutorials.sh with Clang 13 and inspect the tutorial source containing the reported RAND_MAX conversion. Then read tutorials.yaml to determine whether tutorial builds are configured for Azure CI. Done means the reported compilation issue and the CI coverage question are resolved, with the tutorial build summary checked.