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/***
*difftime.c - return difference between two times as a double
*
* Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
*
*Purpose:
* Find difference between two time in seconds.
*
*Revision History:
* 12-11-87 JCR Added "_LOAD_DS" to declaration
* 08-15-89 PHG Made MTHREAD version _pascal
* 11-20-89 JCR difftime() always _cdecl (not pascal even under
* mthread)
* 03-20-90 GJF Replaced _LOAD_DS with CALLTYPE1, added #include
* <cruntime.h> and fixed the copyright. Also, cleaned
* up the formatting a bit.
* 10-04-90 GJF New-style function declarator.
* 05-19-92 DJM ifndef for POSIX build.
*
*******************************************************************************/
#ifndef _POSIX_
#include <cruntime.h>
#include <time.h>
/***
*double difftime(b, a) - find difference between two times
*
*Purpose:
* returns difference between two times (b-a)
*
* Multi-thread version must use pascal calling convention to be re-entrant.
*
*Entry:
* long a, b - times to difference (actually are time_t values)
*
*Exit:
* returns a double with the time in seconds between two times
*
*Exceptions:
*
*******************************************************************************/
double _CALLTYPE1 difftime (
time_t b,
time_t a
)
{
return( (double)( b - a ) );
}
#endif /* _POSIX_ */
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