Салям!
21-Мар-2004 13:56 [EMAIL PROTECTED] (Bart Oldeman) wrote to
[EMAIL PROTECTED]:
> +void FAR * add_far(void FAR * fp, unsigned off)
> {
> + unsigned segment, offset;
> if (FP_SEG(fp) == 0xffff)
> + return ((char FAR *) fp) + off;
> #ifndef I86
> if (FP_SEG(fp) == 0)
> + return ((char FAR *) fp) + off;
> #endif
> + offset = off + FP_OFF(fp);
> + segment = FP_SEG(fp) + (offset >> 4);
> + if (offset < off) /* forward carry without using a long */
> + segment += 0x1000;
> + return MK_FP(segment, offset & 0xf);
> }
void FAR * add_far(void FAR * fp, unsigned off)
{
if (FP_SEG(fp) == 0xffff ||
#ifndef I86
FP_SEG(fp) == 0 ||
#endif
off <= ~FP_OFF (fp)) /* off <= max - FP_OFF(fp) ? */
return (char FAR*)fp + off;
off += FP_OFF(fp);
return MK_FP (FP_SEG (fp) + (off >> 4) + 0x1000, off & 0xf);
}
Difference is that my code is simpler and normalizes pointers much less
frequently.
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