#include "plplot.h"
#include <math.h>

void plr45(ix,iy,isens)
int *ix, *iy, isens;
{
      int ixx, iyy;

      ixx = *ix-isens*(*iy);
      iyy = *ix * isens + *iy;
      *ix = ixx/max(1,abs(ixx));
      *iy = iyy/max(1,abs(iyy));
}