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annotate packages/language/c/libc/current/tests/stdlib/rand1.c @ 66:bf00f99aec69 ecos-sw-2000-02-02

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Merge from eCos master repository on 2000-02-02-19:16:44-GMT
author jlarmour
date Wed, 02 Feb 2000 19:57:02 +0000
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1 //=================================================================
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2 //
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3 // rand1.c
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4 //
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5 // Testcase for C library rand()
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6 //
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7 //=================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //=================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): ctarpy, jlarmour
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35 // Contributors: jlarmour
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36 // Date: 1999-01-20
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37 // Description: Contains testcode for C library rand() function
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38 //
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39 //
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40 //####DESCRIPTIONEND####
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41
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42 // Declarations for test system:
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43 //
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44 // TESTCASE_TYPE=CYG_TEST_MODULE
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45
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46 // CONFIGURATION
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47
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48 #include <pkgconf/libc.h> // Configuration header
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49
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50 // INCLUDES
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51
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52 #include <stdlib.h>
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53 #include <cyg/infra/testcase.h>
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54 #include <sys/cstartup.h> // C library initialisation
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55
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56
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57 // HOW TO START TESTS
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58
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59 #if defined(CYGPKG_LIBC)
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60
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61 # define START_TEST( test ) test(0)
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62
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63 #else
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64
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65 # define START_TEST( test ) CYG_EMPTY_STATEMENT
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66
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67 #endif // if defined(CYGPKG_LIBC)
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68
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69
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70 // CONSTANTS
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71
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72 // This is the max allowable hits, where a hit is an element
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73 // of a random array being the same as index+1 or index+2
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74 #define TOLERANCE 2
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75
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76 // FUNCTIONS
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77
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78
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79 externC void
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80 cyg_package_start( void )
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81 {
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82 #ifdef CYGPKG_LIBC
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83 cyg_iso_c_start();
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84 #else
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85 (void)main(0, NULL);
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86 #endif
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87 } // cyg_package_start()
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88
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89
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90
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91 #if defined(CYGPKG_LIBC)
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92
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93 static void
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94 test( CYG_ADDRWORD data )
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95 {
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96 int ctr;
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97 static int array[1024];
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98 int hits=0;
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99
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100 for (ctr=0; ctr<1024; ctr++)
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101 array[ctr] = rand();
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102
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103 for (ctr=0; ctr< 1021; ctr++)
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104 if ((array[ctr]==array[ctr+1]) ||
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105 (array[ctr]==array[ctr+2]) ||
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106 (array[ctr]==array[ctr+3]))
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107 hits++;
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108
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109 CYG_TEST_PASS_FAIL(hits <= TOLERANCE,
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110 "Simple test for rand() repetition");
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111
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112 CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for "
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113 "C library rand() function");
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114 } // test()
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115
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116 #endif // if defined(CYGPKG_LIBC)
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117
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118
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119 int
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120 main(int argc, char *argv[])
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121 {
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122 CYG_TEST_INIT();
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123
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124 CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
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125 "rand() function");
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126
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127 START_TEST( test );
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128
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129 CYG_TEST_NA("Testing is not applicable to this configuration");
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130 } // main()
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131
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132 // EOF rand1.c