memset.c

eCos操作系统源码

//=================================================================
//
//        memset.c
//
//        Testcase for C library memset() function
//
//=================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
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// or inline functions from this file, or you compile this file and link it
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//####ECOSGPLCOPYRIGHTEND####
//=================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     ctarpy, jlarmour
// Contributors:  
// Date:          2000-04-30
// Description:   Contains testcode for C library memset() function
//
//
//####DESCRIPTIONEND####

// INCLUDES

#include <string.h>
#include <cyg/infra/testcase.h>


// FUNCTIONS

// Functions to avoid having to use libc strings

static int my_strcmp(const char *s1, const char *s2)
{
    for ( ; *s1 == *s2 ; s1++,s2++ )
    {
        if ( *s1 == '\0' )
            break;
    } // for

    return (*s1 - *s2);
} // my_strcmp()


static char *my_strcpy(char *s1, const char *s2)
{
    while (*s2 != '\0') {
        *(s1++) = *(s2++);
    }
    *s1 = '\0';

    return s1; 
} // my_strcpy()


int main( int argc, char *argv[] )
{
    char x[300];
    char *ret;

    CYG_TEST_INIT();

    CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
                  "memset() function");
    CYG_TEST_INFO("This testcase provides simple basic tests");

    // Check 1
    my_strcpy(x, "      ");
    ret = memset(x, 'X', 5);
    if ((my_strcmp(x, "XXXXX ") == 0) && (ret == x))
        CYG_TEST_PASS("Simple memset");
    else
        CYG_TEST_FAIL("Simple memset");

    // Check 2
    my_strcpy(x, "XXXXX ");
    ret = memset(x, 'Y', 0);
    if ((my_strcmp(x, "XXXXX ") == 0) && (ret == x))
        CYG_TEST_PASS("Boundary case of 0 bytes");
    else
        CYG_TEST_FAIL("Boundary case of 0 bytes");

//    CYG_TEST_NA("Testing is not applicable to this configuration");

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

} // main()

// EOF memset.c