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phoenix |
//=================================================================
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//
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// rand1.c
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//
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// Testcase for C library rand()
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//
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//=================================================================
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//####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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//
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// As a special exception, if other files instantiate templates or use macros
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// or inline functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. However the source code for this file must still be made available
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// in accordance with section (3) of the GNU General Public License.
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//
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// This exception does not invalidate any other reasons why a work based on
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// this file might be covered by the GNU General Public License.
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//
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// at http://sources.redhat.com/ecos/ecos-license/
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
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//=================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): ctarpy, jlarmour
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// Contributors:
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// Date: 2000-04-30
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// Description: Contains testcode for C library rand() function
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//
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//
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//####DESCRIPTIONEND####
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// INCLUDES
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#include <stdlib.h>
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#include <cyg/infra/testcase.h>
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// CONSTANTS
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// This is the max allowable hits, where a hit is an element
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// of a random array being the same as index+1 or index+2
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#define TOLERANCE 2
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// FUNCTIONS
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static void
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test( CYG_ADDRWORD data )
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{
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int ctr;
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static int array[1024];
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int hits=0;
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for (ctr=0; ctr<1024; ctr++)
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array[ctr] = rand();
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for (ctr=0; ctr< 1021; ctr++)
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if ((array[ctr]==array[ctr+1]) ||
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(array[ctr]==array[ctr+2]) ||
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(array[ctr]==array[ctr+3]))
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hits++;
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CYG_TEST_PASS_FAIL(hits <= TOLERANCE,
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"Simple test for rand() repetition");
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CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for "
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"C library rand() function");
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} // test()
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int
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main(int argc, char *argv[])
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{
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CYG_TEST_INIT();
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CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
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"rand() function");
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test(0);
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CYG_TEST_NA("Testing is not applicable to this configuration");
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} // main()
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// EOF rand1.c
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