All cosmetic.

1) Rename RANDOM_MAX to RANDOM_MAX_PLUS1 to not confuse with random()'s max
2) Use calloc() instead of zeroing fields explicitly
3) "too many lines" -> "too many delimiters" for err()

games/random/random.c

@@ -162,15 +162,15 @@ main(int argc, char *argv[])
 
 	/* Compute a random exit status between 0 and denom - 1. */
 	if (random_exit)
-		return (int)(denom * random() / RANDOM_MAX);
+		return (int)(denom * random() / RANDOM_MAX_PLUS1);
 
 	/*
 	 * Select whether to print the first line.  (Prime the pump.)
 	 * We find a random number between 0 and denom - 1 and, if it's
 	 * 0 (which has a 1 / denom chance of being true), we select the
 	 * line.
 	 */
-	selected = (int)(denom * random() / RANDOM_MAX) == 0;
+	selected = (int)(denom * random() / RANDOM_MAX_PLUS1) == 0;
 	while ((ch = getchar()) != EOF) {
 		if (selected)
 			(void)putchar(ch);
@@ -180,7 +180,7 @@ main(int argc, char *argv[])
 				err(2, "stdout");
 
 			/* Now see if the next line is to be printed. */
-			selected = (int)(denom * random() / RANDOM_MAX) == 0;
+			selected = (int)(denom * random() / RANDOM_MAX_PLUS1) == 0;
 		}
 	}
 	if (ferror(stdin))

games/random/randomize_fd.c

@@ -48,13 +48,10 @@ rand_node_allocate(void)
 {
 	struct rand_node *n;
 
-	n = (struct rand_node *)malloc(sizeof(struct rand_node));
+	n = (struct rand_node *)calloc(1, sizeof(struct rand_node));
 	if (n == NULL)
-		err(1, "malloc");
+		err(1, "calloc");
 
-	n->len = 0;
-	n->cp = NULL;
-	n->next = NULL;
 	return(n);
 }
 
@@ -175,9 +172,9 @@ randomize_fd(int fd, int type, int unique, double denom)
 			    (type == RANDOM_TYPE_WORDS && isspace(buf[i])) ||
 			    (eof && i == buflen - 1)) {
 			make_token:
-				if (numnode == RANDOM_MAX) {
+				if (numnode == RANDOM_MAX_PLUS1) {
 					errno = EFBIG;
-					err(1, "too many lines");
+					err(1, "too many delimiters");
 				}
 				numnode++;
 				n = rand_node_allocate();
@@ -215,7 +212,7 @@ randomize_fd(int fd, int type, int unique, double denom)
 				if (n->cp == NULL)
 					break;
 
-				if ((int)(denom * random() / RANDOM_MAX) == 0) {
+				if ((int)(denom * random() / RANDOM_MAX_PLUS1) == 0) {
 					ret = printf("%.*s", (int)n->len - 1, n->cp);
 					if (ret < 0)
 						err(1, "printf");

games/random/randomize_fd.h

@@ -33,7 +33,7 @@
  * The random() function is defined to return values between 0 and
  * 2^31 - 1 inclusive in random(3).
  */
-#define	RANDOM_MAX	0x80000000UL
+#define	RANDOM_MAX_PLUS1	0x80000000UL
 
 #define RANDOM_TYPE_UNSET 0
 #define RANDOM_TYPE_LINES 1