campo-sirio/gfm/dswap.c

50 lines
803 B
C
Raw Normal View History

/* DEC *SwapDecimal(ptr1, ptr2)
*
* ARGUMENT
* ptr1 is a ptr to the source1 DEC structure.
* ptr2 is a ptr to the source2 DEC structure.
*
* DESCRIPTION
* Swaps the values of ptr1 and ptr2.
*
* SIDE EFFECTS
* None.
*
* RETURNS
* Returns pointer to ptr1 if successful, otherwise
* returns GM_NULL.
*
*
* POSSIBLE ERROR CODES
*
* GM_NULLPOINTER
*
* AUTHOR
* Jared Levy
* Copyright (C) 1988-1990 Greenleaf Software Inc. All rights reserved.
*
* MODIFICATIONS
*
*/
#include <stdio.h>
#include "gmsystem.h"
DEC *SwapDecimal(ptr1,ptr2)
DEC *ptr1;
DEC *ptr2;
{
DEC temp[1];
/* source must be supplied !! */
_MacStart(GM_DCPY);
_MacInVar(ptr2,GM_NULL);
_MacInVar(ptr1,GM_NULL);
_MacDCopy(temp, ptr1);
_MacDCopy(ptr1, ptr2);
_MacDCopy(ptr2, temp);
_MacRet(ptr1);
}