www.pudn.com > system.rar > difftime.c

/****************************************************************************/ 
/*  difftime v2.54                                                          */ 
/*  Copyright (c) 1996-2004 Texas Instruments Incorporated                  */ 
/****************************************************************************/ 
#undef _INLINE 
#include   
 
_CODE_ACCESS double difftime(time_t time1, time_t time0) 
{ 
    /*----------------------------------------------------------------------*/ 
    /* THE FOLLOWING CONVERSION INSURES THAT ANY POSSIBLE DIFFERENCE IN THE */ 
    /* RANGE OF UNSIGNED LONG IS PROPERLY REPRESENTED IN THE RESULT.        */ 
    /*----------------------------------------------------------------------*/ 
    return ((time1 > time0) ?  (double)(time1 - time0) 
	                    : -(double)(time0 - time1)); 
}