[BZ #3747]

2006-12-18  Jakub Jelinek  <jakub@redhat.com>
	[BZ #3747]
	* stdlib/jrand48_r.c (__jrand48_r): Make sure result is in the
	[-231 .. 231) range.
	* stdlib/tst-rand48.c (main): Fix expected values for 64-bit
	targets.
	* stdlib/tst-rand48-2.c: New test.
	* stdlib/Makefile (tests): Add tst-rand48-2.

1 files changed, 113 insertions, 0 deletions

diff --git a/stdlib/tst-rand48-2.c b/stdlib/tst-rand48-2.c
new file mode 100644
index 0000000000..3079b98839
--- /dev/null
+++ b/stdlib/tst-rand48-2.c
@@ -0,0 +1,113 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+int
+main (void)
+{
+  time_t t = time (NULL);
+  int i, ret = 0;
+  double d;
+  long int l;
+  struct drand48_data data;
+  unsigned short int buf[3];
+
+  srand48 ((long int) t);
+  for (i = 0; i < 50; i++)
+    if ((d = drand48 ()) < 0.0 || d >= 1.0)
+      {
+        printf ("drand48 %d %g\n", i, d);
+        ret = 1;
+      }
+
+  srand48_r ((long int) t, &data);
+  for (i = 0; i < 50; i++)
+    if (drand48_r (&data, &d) != 0 || d < 0.0 || d >= 1.0)
+      {
+        printf ("drand48_r %d %g\n", i, d);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if ((d = erand48 (buf)) < 0.0 || d >= 1.0)
+      {
+        printf ("erand48 %d %g\n", i, d);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if (erand48_r (buf, &data, &d) != 0 || d < 0.0 || d >= 1.0)
+      {
+        printf ("erand48_r %d %g\n", i, d);
+        ret = 1;
+      }
+
+  srand48 ((long int) t);
+  for (i = 0; i < 50; i++)
+    if ((l = lrand48 ()) < 0 || l > INT32_MAX)
+      {
+        printf ("lrand48 %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  srand48_r ((long int) t, &data);
+  for (i = 0; i < 50; i++)
+    if (lrand48_r (&data, &l) != 0 || l < 0 || l > INT32_MAX)
+      {
+        printf ("lrand48_r %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if ((l = nrand48 (buf)) < 0 || l > INT32_MAX)
+      {
+        printf ("nrand48 %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if (nrand48_r (buf, &data, &l) != 0 || l < 0 || l > INT32_MAX)
+      {
+        printf ("nrand48_r %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  srand48 ((long int) t);
+  for (i = 0; i < 50; i++)
+    if ((l = mrand48 ()) < INT32_MIN || l > INT32_MAX)
+      {
+        printf ("mrand48 %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  srand48_r ((long int) t, &data);
+  for (i = 0; i < 50; i++)
+    if (mrand48_r (&data, &l) != 0 || l < INT32_MIN || l > INT32_MAX)
+      {
+        printf ("mrand48_r %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if ((l = jrand48 (buf)) < INT32_MIN || l > INT32_MAX)
+      {
+        printf ("jrand48 %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  buf[2] = (t & 0xffff0000) >> 16; buf[1] = (t & 0xffff); buf[0] = 0x330e;
+  for (i = 0; i < 50; i++)
+    if (jrand48_r (buf, &data, &l) != 0 || l < INT32_MIN || l > INT32_MAX)
+      {
+        printf ("jrand48_r %d %ld\n", i, l);
+        ret = 1;
+      }
+
+  return ret;
+}