1. 根目录:
2. arch
3. parisc
4. math-emu
5. hppa.h

/*
 * Linux/PA-RISC Project (http://www.parisc-linux.org/)
 *
 * Floating-point emulation code
 *  Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2, or (at your option)
 *    any later version.
 *
 *    This program 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 General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifdef __NO_PA_HDRS
    PA header file -- do not include this header file for non-PA builds.
#endif


/* amount is assumed to be a constant between 0 and 32 (non-inclusive) */
#define Shiftdouble(left,right,amount,dest)			\
    /* int left, right, amount, dest; */			\
    dest = ((left) << (32-(amount))) | ((unsigned int)(right) >> (amount))

/* amount must be less than 32 */
#define Variableshiftdouble(left,right,amount,dest)		\
    /* unsigned int left, right;  int amount, dest; */		\
    if (amount == 0) dest = right;				\
    else dest = ((((unsigned) left)&0x7fffffff) << (32-(amount))) |	\
          ((unsigned) right >> (amount))

/* amount must be between 0 and 32 (non-inclusive) */
#define Variable_shift_double(left,right,amount,dest)		\
    /* unsigned int left, right;  int amount, dest; */		\
    dest = (left << (32-(amount))) | ((unsigned) right >> (amount))