--- Libc/Libc-1725.40.4/tests/arc4random.c
+++ /dev/null
@@ -1,131 +0,0 @@
-/*-
- * Copyright (c) 2011 David Schultz
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-#include <math.h>
-#include <unistd.h>
-#include <pthread.h>
-#include <sys/cdefs.h>
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <sys/wait.h>
-
-#include <darwintest.h>
-#include <darwintest_utils.h>
-
-#define LEN (1024 * 32)
-static void * stress(void *ptr __unused)
-{
-	uint32_t value;
-	uint8_t buf[LEN + 1];
-	buf[LEN] = 0;
-	for (int i = 0; i < LEN; i++){
-		value = arc4random();
-		if (value % 100 == 0)
-			arc4random_stir();
-		if ((value & 0x70) == 0)
-			arc4random_uniform(value);
-		if ((value & 0x7) == 0)
-			arc4random_buf(buf, (size_t)i);
-	}
-	T_ASSERT_EQ(buf[LEN], 0, NULL);
-
-	return NULL;
-}
-
-T_DECL(arc4random_stress, "arc4random() stress")
-{
-	const int ncpu = dt_ncpu();
-
-	pthread_t thr[ncpu];
-	for (int i = 0; i < ncpu; i++){
-		T_ASSERT_POSIX_ZERO(pthread_create(&thr[i], NULL, stress, NULL), NULL);
-	}
-	for (int i = 0; i < ncpu; i++){
-		T_ASSERT_POSIX_ZERO(pthread_join(thr[i], NULL), NULL);
-	}
-}
-
-/*
- * BUFSIZE is the number of bytes of rc4 output to compare.  The probability
- * that this test fails spuriously is 2**(-BUFSIZE * 8).
- */
-#define	BUFSIZE		8
-
-T_DECL(arc4random_fork, "arc4random() shouldn't return the same sequence in child post-fork()")
-{
-	struct shared_page {
-		char parentbuf[BUFSIZE];
-		char childbuf[BUFSIZE];
-	} *page;
-	pid_t pid;
-	char c;
-
-	page = mmap(NULL, sizeof(struct shared_page), PROT_READ | PROT_WRITE,
-		    MAP_ANON | MAP_SHARED, -1, 0);
-	T_ASSERT_NE(page, MAP_FAILED, "mmap()");
-
-	arc4random_buf(&c, 1);
-
-	pid = fork();
-	if (pid < 0) {
-		T_ASSERT_FAIL("fork() failed");
-	} else if (pid == 0) {
-		/* child */
-		arc4random_buf(page->childbuf, BUFSIZE);
-		exit(0);
-	} else {
-		/* parent */
-		int status;
-		arc4random_buf(page->parentbuf, BUFSIZE);
-		T_ASSERT_EQ(wait(&status), pid, "wait() returns child pid");
-	}
-	T_EXPECT_NE(memcmp(page->parentbuf, page->childbuf, BUFSIZE), 0, "sequences are distinct");
-}
-
-#define  ARC4_EXPECTATION ((2u << 31)  - 1)/2
-#define  ITER 10000000
-#define  PROB_THRESH sqrt(6*log2(ITER)/(ITER*1.0))
-/* Simple randomness test using a chernoff bound
- * If this fails with probability (1 - 2/(ITER)^{4})
- *  arc4random is NOT a uniform distribution between
- *  0 and 2**32 - 1. Note that this test does not guarantee
- *  that arc4random. Is correct, just that it isn't terribly
- *  wrong.
- * */
-T_DECL(arc4random_stats, "ensure arc4random() is random")
-{
-	int i;
-	int total = 0;
-	for (i = 0; i < ITER; i++) {
-		total += arc4random() > ARC4_EXPECTATION;
-	}
-	double prob = total/(ITER*1.0);
-	T_EXPECT_LT(fabs(prob - 0.5), PROB_THRESH, "probability is within threshold");
-}