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Sprite 1984 - 1993
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Time_Subtract.c
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C/C++ Source or Header
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1988-06-27
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1KB
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54 lines
/*
* Time_Subtract.c --
*
* Source code for the Time_Subtract library procedure.
*
* Copyright 1988 Regents of the University of California
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. The University of California
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
#ifndef lint
static char rcsid[] = "$Header: Time_Subtract.c,v 1.2 88/06/27 17:23:37 ouster Exp $ SPRITE (Berkeley)";
#endif not lint
#include <sprite.h>
#include <spriteTime.h>
/*
*----------------------------------------------------------------------
*
* Time_Subtract --
*
* Subtracts one time value from another.
*
* Results:
* The difference of the 2 times.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
void
Time_Subtract(time1, time2, resultPtr)
Time time1;
Time time2;
register Time *resultPtr;
{
resultPtr->seconds = time1.seconds - time2.seconds;
resultPtr->microseconds = time1.microseconds - time2.microseconds;
if (resultPtr->microseconds < 0) {
resultPtr->seconds -= 1;
resultPtr->microseconds += ONE_SECOND;
}
}