Q51124: _arc() Generates Run-Time Error R6003

Article: Q51124
Product(s): See article
Version(s): 2.00 2.01
Operating System(s): MS-DOS
Keyword(s): ENDUSER | buglist5.10 buglist2.00 buglist2.01 s_c | mspl13_c
Last Modified: 17-JAN-1990

The C run-time function _arc() will generate the following error
message if the sum of the absolute value of each coordinate in the
bounding rectangle is greater than 32767:

   run-time error R6003
   -integer divide by 0

For example, the function is prototyped with the following parameters:

   short far _arc (x1, y1, x2, y2, x3, y3, x4, y4);

For the function to work properly, the following statement must be
true:

   |x1| + |x2| <= 32767
   |y1| + |y2| <= 32767

The following program generates the R6003 error message:

#include <stdio.h>
#include <graph.h>

/* COMMAND LINE:
*/

main()
{
      _setvideomode ( _VRES16COLOR );
      _arc ( -20000, -120, 12768, 4480, 342, 346, 205, 315 );
      getch();
      _setvideomode ( _DEFAULTMODE );
}

Microsoft has confirmed this to be a problem in QuickC Versions 2.00
and 2.01 and in C Version 5.10. We are researching this problem and
will post new information here as it becomes available.

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