abs.c

eCos操作系统源码

//=================================================================
//
//        abs.c
//
//        Testcase for C library abs()
//
//=================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
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// 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
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
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// or inline functions from this file, or you compile this file and link it
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// 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 abs() function
//
//
//####DESCRIPTIONEND####

// INCLUDES

#include <stdlib.h>
#include <limits.h>
#include <cyg/infra/testcase.h>

// FUNCTIONS

int
main( int argc, char *argv[] )
{
    int x;

    CYG_TEST_INIT();

    CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C "
                  "library abs() function");

    // Check 1
    x = 5;
    CYG_TEST_PASS_FAIL( abs(x) == 5, "abs(5)");

    // Check 2
    x = -5;
    CYG_TEST_PASS_FAIL( abs(x) == 5, "abs(-5)");
    
    // Check 3
    x = 12345;
    CYG_TEST_PASS_FAIL( abs(x) == 12345, "abs(12345)");

    // Check 4
    x = -23456;
    CYG_TEST_PASS_FAIL( abs(x) == 23456, "abs(-23456");

    // Check 5
    x = 0;
    CYG_TEST_PASS_FAIL( abs(x) == 0, "abs(0)");

    // Check 6
    x = INT_MAX;
    CYG_TEST_PASS_FAIL( abs(x) == INT_MAX, "abs(INT_MAX)");

    // Check 7
    x = -INT_MAX;
    CYG_TEST_PASS_FAIL( abs(x) == INT_MAX, "abs(-INT_MAX)");

    CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C "
                    "library abs() function");

} // main()

// EOF abs.c