min_div.c

#include "typedef.h"
#include "tools.h"
/**************************************************************************\
@---------------------------------------------------------------------------
@---------------------------------------------------------------------------
@ FILE: min_div.c
@---------------------------------------------------------------------------
@---------------------------------------------------------------------------
@
\**************************************************************************/


/* 
@-------------------------------------------------------------------------
@ int min_div(a,b)
@ int a,b;
@
| Bestimmt c so, dass a = c * b + r mit minimalem r (im Absolutbetrag)
@ calculates intger c such that a = c*b + r with r of minimal absulute
@ size
@
@-------------------------------------------------------------------------
 */

int min_div(a,b) 
int a,b;
{
int vorzeichen;
int c = 0;

if(a == 0) {
	return(c);
	}
if(b == 0) {
	printf("Division durch NULL\n");
	exit(3);
	}
else {
/* was ein Quatsch	vorzeichen = ((b > 0) == (a > 0)) ? 1 : -1; */
	c = a/b;
	if( abs((a - c * b) * 2) > abs(b) )
        {
	  c += c > 0 ? 1 : -1;
        }
/* s.o.	c *= vorzeichen; */
	}
return(c);
}



/*{{{}}}*/