CE better human_size ()

ce/interp.c

@@ -26,23 +26,16 @@ bool interp_is_running (void) { return run; }
 void interp_shutdown (void) { run = false; }
 
 static void human_size (double size, double* out, char** str) {
-  if (size >= 1024.0f && size < 1024.0f * 1024.0f) {
-    *out = (double)size / 1024.0f;
-    *str = "KiB";
-  } else if (size >= 1024.0f * 1024.0f && size < 1024.0f * 1024.0f * 1024.0f) {
-    *out = (double)size / (1024.0f * 1024.0f);
-    *str = "MiB";
-  } else if (size >= 1024.0f * 1024.0f * 1024.0f && size < 1024.0f * 1024.0f * 1024.0f * 1024.0f) {
-    *out = (double)size / (1024.0f * 1024.0f * 1024.0f);
-    *str = "GiB";
-  } else if (size >= 1024.0f * 1024.0f * 1024.0f * 1024.0f &&
-             size < 1024.0f * 1024.0f * 1024.0f * 1024.0f * 1024.0f) {
-    *out = (double)size / (1024.0f * 1024.0f * 1024.0f * 1024.0f);
-    *str = "TiB";
-  } else {
-    *out = 0.0f;
-    *str = "???";
+  static char* units[] = {"B", "KiB", "MiB", "GiB", "TiB", "PiB"};
+
+  size_t i = 0;
+  while (size >= 1024.0 && i < (sizeof (units) / sizeof (units[0])) - 1) {
+    size /= 1024.0;
+    i++;
   }
+
+  *out = size;
+  *str = units[i];
 }
 
 static void echo (struct context* context, char** strings, size_t strings_count) {