Update.

2000-09-15  Ulrich Drepper  <drepper@redhat.com>

	* include/limits.h: Define LLONG_MIN, LLONG_MAX, ULLONG_MAX if
	necessary.  Move includes of POSIX and Unix limits files to the
	end.
	* stdlib/Makefile (tests): Add tst-limits.
	* stdlib/tst-limits.h: New file.

diff --git a/ChangeLog b/ChangeLog
index 920c692..9ae5136 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2000-09-15  Ulrich Drepper  <drepper@redhat.com>
+
+       * include/limits.h: Define LLONG_MIN, LLONG_MAX, ULLONG_MAX if
+       necessary.  Move includes of POSIX and Unix limits files to the
+       end.
+       * stdlib/Makefile (tests): Add tst-limits.
+       * stdlib/tst-limits.h: New file.
+
 2000-09-15  Andreas Jaeger  <aj@suse.de>
 
        * sysdeps/mips/fpu/fesetenv.c (__fesetenv): Handle FE_NOMASK_ENV.

diff --git a/stdlib/Makefile b/stdlib/Makefile
index 24b4b44..19e88f3 100644 (file)
--- a/stdlib/Makefile
+++ b/stdlib/Makefile
@@ -52,7 +52,7 @@ routines      :=                                                            \
 distribute     := exit.h grouping.h abort-instr.h isomac.c
 tests          := tst-strtol tst-strtod testmb testrand testsort testdiv \
                   test-canon test-canon2 tst-strtoll tst-environ         \
-                  tst-xpg-basename tst-random tst-bsearch
+                  tst-xpg-basename tst-random tst-bsearch tst-limits
 
 
 # Several mpn functions from GNU MP are used by the strtod function.

diff --git a/stdlib/tst-limits.c b/stdlib/tst-limits.c
new file mode 100644 (file)
index 0000000..b6a7f16
--- /dev/null
+++ b/stdlib/tst-limits.c
@@ -0,0 +1,69 @@
+/* It is important that this comes first to not hide effects introduced
+   by other headers.  */
+#include <limits.h>
+
+#include <inttypes.h>
+#include <stdio.h>
+
+
+static long long int
+bitval (int bits)
+{
+  long long int val = 0;
+  while (bits-- > 0)
+    val |= 1ll << bits;
+  return val;
+}
+
+
+int
+main (void)
+{
+  int result = 0;
+
+#define TEST(name, format, expected) \
+  printf ("%-12s expected = %-20" format "  actual = %" format "\n",         \
+         #name ":", expected, name);                                         \
+  result |= name != expected
+
+  /* The limits from ISO C99.  */
+
+  /* We cannot support anything but 8-bit chars.  */
+  TEST (CHAR_BIT, "d", 8);
+  TEST (SCHAR_MIN, "d", -128);
+  TEST (SCHAR_MAX, "d", 127);
+  TEST (UCHAR_MAX, "d", 255);
+
+  TEST (SHRT_MIN, "d", -(1 << (sizeof (short int) * CHAR_BIT - 1)));
+  TEST (SHRT_MAX, "d", (1 << (sizeof (short int) * CHAR_BIT - 1)) - 1);
+  TEST (USHRT_MAX, "d", (1 << sizeof (short int) * CHAR_BIT) - 1);
+
+  TEST (INT_MIN, "d", (int) -bitval (sizeof (int) * CHAR_BIT - 1) - 1);
+  TEST (INT_MAX, "d", (int) bitval (sizeof (int) * CHAR_BIT - 1));
+  TEST (UINT_MAX, "u",
+       (unsigned int) bitval (sizeof (unsigned int) * CHAR_BIT));
+
+  TEST (LONG_MIN, "ld",
+       (long int) -bitval (sizeof (long int) * CHAR_BIT - 1) - 1);
+  TEST (LONG_MAX, "ld", (long int) bitval (sizeof (long int) * CHAR_BIT - 1));
+  TEST (ULONG_MAX, "lu",
+       (unsigned long int) bitval (sizeof (unsigned long int) * CHAR_BIT));
+
+  TEST (LLONG_MIN, "lld", -bitval (sizeof (long long int) * CHAR_BIT - 1) - 1);
+  TEST (LLONG_MAX, "lld", bitval (sizeof (long long int) * CHAR_BIT - 1));
+  TEST (ULLONG_MAX, "llu",
+       (unsigned long long int) bitval (sizeof (unsigned long long int)
+                                        * CHAR_BIT));
+
+  /* Values from POSIX and Unix.  */
+#ifdef PAGESIZE
+  TEST (PAGESIZE, "d", getpagesize ());
+#elif PAGE_SIZE
+  TEST (PAGE_SIZE, "d", getpagesize ());
+#endif
+
+  TEST (WORD_BIT, "d", sizeof (int) * CHAR_BIT);
+  TEST (LONG_BIT, "d", sizeof (long int) * CHAR_BIT);
+
+  return result;
+}