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- /*
- * 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;
- }
- }
-