You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
1.4 KiB
60 lines
1.4 KiB
/***
|
|
*div.c - contains the div routine
|
|
*
|
|
* Copyright (c) 1989-2001, Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* Performs a signed divide and returns quotient
|
|
* and remainder.
|
|
*
|
|
*Revision History:
|
|
* 06-02-89 PHG module created
|
|
* 03-14-90 GJF Made calling type _CALLTYPE1 and added #include
|
|
* <cruntime.h>. Also, fixed the copyright.
|
|
* 10-04-90 GJF New-style function declarator.
|
|
* 04-06-93 SKS Replace _CRTAPI* with __cdecl
|
|
*
|
|
*******************************************************************************/
|
|
|
|
#include <cruntime.h>
|
|
#include <stdlib.h>
|
|
|
|
/***
|
|
*div_t div(int numer, int denom) - do signed divide
|
|
*
|
|
*Purpose:
|
|
* This routine does an divide and returns the results.
|
|
* Since we don't know how the Intel 860 does division, we'd
|
|
* better make sure that we have done it right.
|
|
*
|
|
*Entry:
|
|
* int numer - Numerator passed in on stack
|
|
* int denom - Denominator passed in on stack
|
|
*
|
|
*Exit:
|
|
* returns quotient and remainder in structure
|
|
*
|
|
*Exceptions:
|
|
* No validation is done on [denom]* thus, if [denom] is 0,
|
|
* this routine will trap.
|
|
*
|
|
*******************************************************************************/
|
|
|
|
div_t __cdecl div (
|
|
int numer,
|
|
int denom
|
|
)
|
|
{
|
|
div_t result;
|
|
|
|
result.quot = numer / denom;
|
|
result.rem = numer % denom;
|
|
|
|
if (numer < 0 && result.rem > 0) {
|
|
/* did division wrong; must fix up */
|
|
++result.quot;
|
|
result.rem -= denom;
|
|
}
|
|
|
|
return result;
|
|
}
|