//=================================================================////        srand.c////        Testcase for C library srand()////=================================================================//####ECOSGPLCOPYRIGHTBEGIN####// -------------------------------------------// This file is part of eCos, the Embedded Configurable Operating System.// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.//// eCos is free software; you can redistribute it and/or modify it under// the terms of the GNU General Public License as published by the Free// Software Foundation; either version 2 or (at your option) any later version.//// eCos is distributed in the hope that it will be useful, but WITHOUT ANY// WARRANTY; without even the implied warranty of MERCHANTABILITY or// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License// for more details.//// You should have received a copy of the GNU General Public License along// with eCos; if not, write to the Free Software Foundation, Inc.,// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.//// As a special exception, if other files instantiate templates or use macros// or inline functions from this file, or you compile this file and link it// with other works to produce a work based on this file, this file does not// by itself cause the resulting work to be covered by the GNU General Public// License. However the source code for this file must still be made available// in accordance with section (3) of the GNU General Public License.//// This exception does not invalidate any other reasons why a work based on// this file might be covered by the GNU General Public License.//// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.// at http://sources.redhat.com/ecos/ecos-license/// -------------------------------------------//####ECOSGPLCOPYRIGHTEND####//=================================================================//#####DESCRIPTIONBEGIN####//// Author(s):     ctarpy, jlarmour// Contributors:  // Date:          2000-04-30// Description:   Contains testcode for C library srand() function//////####DESCRIPTIONEND####// INCLUDES#include <stdlib.h>#include <cyg/infra/testcase.h>// CONSTANTS// Max cross correlation value of two sequences of// different seed#define X_CORREL 10// size of arrays to use for testing#define TEST_SIZE 1024// FUNCTIONSstatic voidtest( CYG_ADDRWORD data ){    int ctr;    static int array_1[TEST_SIZE];    static int array_2[TEST_SIZE];    static int array_3[TEST_SIZE];    int hits;    int fail;    srand(3);    for (ctr=0; ctr<TEST_SIZE; ++ctr)        array_1[ctr] = rand();    srand(9);    for (ctr=0; ctr<TEST_SIZE; ++ctr)        array_2[ctr] = rand();    srand(3);    for (ctr=0; ctr<TEST_SIZE; ++ctr)        array_3[ctr] = rand();    // Make sure arrays 1 and 3 are the same    fail = 0;    for (ctr=0; ctr<TEST_SIZE; ++ctr) {        if (array_1[ctr] != array_3[ctr])            ++fail;    } // for    CYG_TEST_PASS_FAIL( fail == 0, "resetting the seed to the same value");    // Check sequences of different seeds are different    hits = 0;    for (ctr=0; ctr<TEST_SIZE; ++ctr) {        if (array_1[ctr] == array_2[ctr])            ++hits;    } // for    CYG_TEST_PASS_FAIL(hits < X_CORREL,                       "random sequence for different seeds is different");    CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for "                    "C library srand() function");} // test()intmain(int argc, char *argv[]){    CYG_TEST_INIT();    CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "                  "srand() function");    test(0);    CYG_TEST_NA("Testing is not applicable to this configuration");} // main()// EOF srand.c