Mercurial > flash_v2
diff packages/language/c/libc/current/tests/stdlib/rand1.c @ 0:3111d98ba7b3 ecos-v1_1-release
Initial commit of eCos version 1.1
| author | jlarmour |
|---|---|
| date | Tue, 11 May 1999 11:16:07 +0000 |
| parents | |
| children | 443894e2e912 |
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new file mode 100644 --- /dev/null +++ b/packages/language/c/libc/current/tests/stdlib/rand1.c @@ -0,0 +1,129 @@ +//================================================================= +// +// rand1.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 +// +// +//####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 + +// This is the max allowable hits, where a hit is an element +// of a random array being the same as index+1 or index+2 +#define TOLERANCE 2 + +// 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 void +test( CYG_ADDRWORD data ) +{ + int ctr; + static int array[1024]; + int hits=0; + + for (ctr=0; ctr<1024; ctr++) + array[ctr] = rand(); + + for (ctr=0; ctr< 1021; ctr++) + if ((array[ctr]==array[ctr+1]) || + (array[ctr]==array[ctr+2]) || + (array[ctr]==array[ctr+3])) + hits++; + + CYG_TEST_PASS_FAIL(hits <= TOLERANCE, "Simple test for rand() repetition"); + + 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"); + + START_TEST( test ); + + CYG_TEST_PASS_FINISH("Testing is not applicable to this configuration"); +} // main() + +// EOF rand1.c
