increase precision a bit

squiggle_more.c

@@ -276,13 +276,13 @@ void array_print_histogram(double* xs, int n_samples, int n_bins) {
         double bin_start = min_value + i * bin_width;
         double bin_end = bin_start + bin_width;
         if(bin_width < 0.01){
-            printf("  [%4.3f, %4.3f): ", bin_start, bin_end); 
+            printf("  [%4.4f, %4.4f): ", bin_start, bin_end); 
         } else if(bin_width < 0.1){
-            printf("  [%4.2f, %4.2f): ", bin_start, bin_end); 
+            printf("  [%4.3f, %4.3f): ", bin_start, bin_end); 
         } else if(bin_width < 1){
-            printf("  [%4.1f, %4.1f): ", bin_start, bin_end); 
+            printf("  [%4.2f, %4.2f): ", bin_start, bin_end); 
         } else if(bin_width < 10){
-            printf("  [%4.0f, %4.0f): ", bin_start, bin_end); 
+            printf("  [%4.1f, %4.1f): ", bin_start, bin_end); 
         } else {
             printf("  [%4f, %4f): ", bin_start, bin_end); 
         }