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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 Cygnus eCos Public License |
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12 // Version 1.0 (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://sourceware.cygnus.com/ecos |
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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 Cygnus Operating System, released |
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22 // September 30, 1998. |
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23 // |
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24 // The Initial Developer of the Original Code is Cygnus. Portions created |
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25 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved. |
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26 // ------------------------------------------- |
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27 // |
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28 //####COPYRIGHTEND#### |
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29 //================================================================= |
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30 //#####DESCRIPTIONBEGIN#### |
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31 // |
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32 // Author(s): ctarpy@cygnus.co.uk, jlarmour@cygnus.co.uk |
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33 // Contributors: jlarmour@cygnus.co.uk |
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34 // Date: 1998/6/3 |
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35 // Description: Contains testcode for C library rand() function |
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36 // |
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37 // |
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38 //####DESCRIPTIONEND#### |
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39 |
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40 // Declarations for test system: |
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41 // |
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42 // TESTCASE_TYPE=CYG_TEST_MODULE |
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43 |
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44 // CONFIGURATION |
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45 |
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46 #include <pkgconf/libc.h> // Configuration header |
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47 |
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48 // INCLUDES |
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49 |
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50 #include <stdlib.h> |
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51 #include <cyg/infra/testcase.h> |
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52 #include <sys/cstartup.h> // C library initialisation |
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53 |
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54 |
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55 // HOW TO START TESTS |
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56 |
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57 #if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_RAND) |
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58 |
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59 # define START_TEST( test ) test(0) |
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60 |
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61 #else |
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62 |
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63 # define START_TEST( test ) CYG_EMPTY_STATEMENT |
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64 |
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65 #endif // if defined(CYGPKG_LIBC) |
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66 |
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67 |
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68 // CONSTANTS |
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69 |
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70 // This is the max allowable hits, where a hit is an element |
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71 // of a random array being the same as index+1 or index+2 |
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72 #define TOLERANCE 2 |
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73 |
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74 // FUNCTIONS |
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75 |
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76 |
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77 externC void |
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78 cyg_package_start( void ) |
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79 { |
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80 #ifdef CYGPKG_LIBC |
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81 cyg_iso_c_start(); |
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82 #else |
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83 (void)main(0, NULL); |
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84 #endif |
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85 } // cyg_package_start() |
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86 |
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87 |
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88 |
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89 #if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_RAND) |
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90 |
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91 static void |
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92 test( CYG_ADDRWORD data ) |
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93 { |
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94 int ctr; |
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95 static int array[1024]; |
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96 int hits=0; |
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97 |
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98 for (ctr=0; ctr<1024; ctr++) |
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99 array[ctr] = rand(); |
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100 |
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101 for (ctr=0; ctr< 1021; ctr++) |
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102 if ((array[ctr]==array[ctr+1]) || |
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103 (array[ctr]==array[ctr+2]) || |
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104 (array[ctr]==array[ctr+3])) |
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105 hits++; |
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106 |
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107 CYG_TEST_PASS_FAIL(hits <= TOLERANCE, "Simple test for rand() repetition"); |
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108 |
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109 CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library " |
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110 "rand() function"); |
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111 } // test() |
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112 |
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113 #endif // if defined(CYGPKG_LIBC) && defined(CYGPKG_LIBC_RAND) |
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114 |
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115 |
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116 int |
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117 main(int argc, char *argv[]) |
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118 { |
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119 CYG_TEST_INIT(); |
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120 |
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121 CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library " |
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122 "rand() function"); |
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123 |
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124 START_TEST( test ); |
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125 |
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126 CYG_TEST_PASS_FINISH("Testing is not applicable to this configuration"); |
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127 } // main() |
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128 |
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129 // EOF rand1.c |
