/* Copyright (C) 1992, 1997 Free Software Foundation, Inc.   This file is part of the GNU C Library.   The GNU C Library is free software; you can redistribute it and/or   modify it under the terms of the GNU Library General Public License as   published by the Free Software Foundation; either version 2 of the   License, or (at your option) any later version.   The GNU C Library is distributed in the hope that it will be useful,   but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU   Library General Public License for more details.   You should have received a copy of the GNU Library General Public   License along with the GNU C Library; see the file COPYING.LIB.  If not,   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,   Boston, MA 02111-1307, USA.  */typedef struct {	long    quot;	long    rem;} ldiv_t;/* Return the `ldiv_t' representation of NUMER over DENOM.  */ldiv_tldiv (long int numer, long int denom){  ldiv_t result;  result.quot = numer / denom;  result.rem = numer % denom;  /* The ANSI standard says that |QUOT| <= |NUMER / DENOM|, where     NUMER / DENOM is to be computed in infinite precision.  In     other words, we should always truncate the quotient towards     zero, never -infinity.  Machine division and remainer may     work either way when one or both of NUMER or DENOM is     negative.  If only one is negative and QUOT has been     truncated towards -infinity, REM will have the same sign as     DENOM and the opposite sign of NUMER; if both are negative     and QUOT has been truncated towards -infinity, REM will be     positive (will have the opposite sign of NUMER).  These are     considered `wrong'.  If both are NUM and DENOM are positive,     RESULT will always be positive.  This all boils down to: if     NUMER >= 0, but REM < 0, we got the wrong answer.  In that     case, to get the right answer, add 1 to QUOT and subtract     DENOM from REM.  */  if (numer >= 0 && result.rem < 0)    {      ++result.quot;      result.rem -= denom;    }  return result;}