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@@ -0,0 +1,162 @@
+//=================================================================
+//
+//        rand3.c
+//
+//        Testcase for C library rand()
+//
+//=================================================================
+//####COPYRIGHTBEGIN####
+//
+// -------------------------------------------
+// The contents of this file are subject to the Cygnus eCos Public License
+// Version 1.0 (the "License"); you may not use this file except in
+// compliance with the License.  You may obtain a copy of the License at
+// http://sourceware.cygnus.com/ecos
+// 
+// Software distributed under the License is distributed on an "AS IS"
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the
+// License for the specific language governing rights and limitations under
+// the License.
+// 
+// The Original Code is eCos - Embedded Cygnus Operating System, released
+// September 30, 1998.
+// 
+// The Initial Developer of the Original Code is Cygnus.  Portions created
+// by Cygnus are Copyright (C) 1998 Cygnus Solutions.  All Rights Reserved.
+// -------------------------------------------
+//
+//####COPYRIGHTEND####
+//=================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):     ctarpy@cygnus.co.uk, jlarmour@cygnus.co.uk
+// Contributors:    jlarmour@cygnus.co.uk
+// Date:          1998/6/3
+// Description:   Contains testcode for C library rand() function. This tests
+//                that random numbers are distributed well between 0 and
+//                RAND_MAX
+//
+//
+//####DESCRIPTIONEND####
+
+// Declarations for test system:
+//
+// TESTCASE_TYPE=CYG_TEST_MODULE
+
+
+// CONFIGURATION
+
+#include <pkgconf/libc.h>   // Configuration header
+
+
+// INCLUDES
+
+#include <stdlib.h>
+#include <cyg/infra/testcase.h>
+#include <sys/cstartup.h>          // C library initialisation
+
+
+// HOW TO START TESTS
+
+#if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_RAND)
+
+# define START_TEST( test ) test(0)
+
+#else
+
+# define START_TEST( test ) CYG_EMPTY_STATEMENT
+
+#endif // if defined(CYGPKG_LIBC)
+
+
+// CONSTANTS
+
+#define NUM_BUCKETS 1024           // how many categories to define
+#define TEST_LENGTH 100000         // how many samples to take
+#define BUCKET_DIFF_TOLERANCE 4    // how much the buckets can vary at the end
+
+// FUNCTIONS
+
+
+externC void
+cyg_package_start( void )
+{
+#ifdef CYGPKG_LIBC
+    cyg_iso_c_start();
+#else
+    (void)main(0, NULL);
+#endif
+} // cyg_package_start()
+
+
+#if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_RAND)
+
+static int
+my_abs(int i)
+{
+    return (i < 0) ? -i : i;
+} // my_abs()
+
+static void
+test( CYG_ADDRWORD data )
+{
+    static cyg_uint8 rand_bucket[NUM_BUCKETS]; // divide the space from
+                                               // 0..RAND_MAX into
+                                               // NUM_BUCKETS categories
+    cyg_ucount32 count;                        // loop variable
+    int r;                                     // temp for rand() variable
+    cyg_ucount32 sum;                          // sum of bucket contents
+    cyg_ucount32 average;                      // average of bucket contents
+
+    // initialise all buckets to 0 - do it ourselves rather than rely on memset
+    for ( count=0; count < NUM_BUCKETS; ++count )
+    {
+        rand_bucket[ count ] = 0;
+    } // for
+
+    for ( count=0; count < TEST_LENGTH; ++count )
+    {
+        r = rand();
+        ++rand_bucket[ r % NUM_BUCKETS ];
+    } // for
+
+    for ( sum=0, count=0; count < NUM_BUCKETS; ++count )
+    {
+        sum += rand_bucket[ count ];
+    } // for
+
+    average = sum / NUM_BUCKETS;
+
+    for ( count=0; count < NUM_BUCKETS; ++count )
+    {
+        if ( my_abs(rand_bucket[count] - average) > BUCKET_DIFF_TOLERANCE )
+            break;
+    } // for
+
+    CYG_TEST_PASS_FAIL( (count >= NUM_BUCKETS), "even distribution of rand()");
+
+    CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library "
+                    "rand() function");
+} // test()
+
+#endif // if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_RAND)
+
+
+int
+main(int argc, char *argv[])
+{
+    CYG_TEST_INIT();
+
+    CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
+                  "rand() function");
+
+    CYG_TEST_INFO("This test tests the distribution of random numbers and");
+    CYG_TEST_INFO("may take some time");
+
+    START_TEST( test );
+
+    CYG_TEST_PASS_FINISH("Testing is not applicable to this configuration");
+} // main()
+
+
+// EOF rand3.c