/***
*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_ */