maint: use ARRAY_CARDINALITY more

* src/sort.c (main): Use ARRAY_CARDINALITY, rather than open-coding it.
* src/factor.c (WHEEL_END): Likewise.
* src/csplit.c (main): Likewise.
* src/od.c: Likewise,
* src/ls.c (main): Likewise.
(N_ENTRIES): Remove definition.  Use ARRAY_CARDINALITY instead.
* src/dircolors.c: Likewise.
(array_len): Remove definition.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/ls.c b/src/ls.c
index 795d1edca..838431c96 100644
--- a/src/ls.c
+++ b/src/ls.c
@@ -1223,7 +1223,7 @@ main (int argc, char **argv)
       SIGXFSZ,
 #endif
     };
-  enum { nsigs = sizeof sig / sizeof sig[0] };
+  enum { nsigs = ARRAY_CARDINALITY (sig) };
 
 #if ! SA_NOCLDSTOP
   bool caught_sig[nsigs];
@@ -1238,8 +1238,8 @@ main (int argc, char **argv)
   initialize_exit_failure (LS_FAILURE);
   atexit (close_stdout);
 
-#define N_ENTRIES(Array) (sizeof Array / sizeof *(Array))
-  assert (N_ENTRIES (color_indicator) + 1 == N_ENTRIES (indicator_name));
+  assert (ARRAY_CARDINALITY (color_indicator) + 1
+          == ARRAY_CARDINALITY (indicator_name));
 
   exit_status = EXIT_SUCCESS;
   print_dir_name = true;