arch/parisc/math-emu/hppa.h

   1 /*
   2  * Linux/PA-RISC Project (http://www.parisc-linux.org/)
   3  *
   4  * Floating-point emulation code
   5  *  Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
   6  *
   7  *    This program is free software; you can redistribute it and/or modify
   8  *    it under the terms of the GNU General Public License as published by
   9  *    the Free Software Foundation; either version 2, or (at your option)
  10  *    any later version.
  11  *
  12  *    This program is distributed in the hope that it will be useful,
  13  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *    GNU General Public License for more details.
  16  *
  17  *    You should have received a copy of the GNU General Public License
  18  *    along with this program; if not, write to the Free Software
  19  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #ifdef __NO_PA_HDRS
  23     PA header file -- do not include this header file for non-PA builds.
  24 #endif
  25
  26
  27 /* amount is assumed to be a constant between 0 and 32 (non-inclusive) */
  28 #define Shiftdouble(left,right,amount,dest)                     \
  29     /* int left, right, amount, dest; */                        \
  30     dest = ((left) << (32-(amount))) | ((unsigned int)(right) >> (amount))
  31
  32 /* amount must be less than 32 */
  33 #define Variableshiftdouble(left,right,amount,dest)             \
  34     /* unsigned int left, right;  int amount, dest; */          \
  35     if (amount == 0) dest = right;                              \
  36     else dest = ((((unsigned) left)&0x7fffffff) << (32-(amount))) |     \
  37           ((unsigned) right >> (amount))
  38
  39 /* amount must be between 0 and 32 (non-inclusive) */
  40 #define Variable_shift_double(left,right,amount,dest)           \
  41     /* unsigned int left, right;  int amount, dest; */          \
  42     dest = (left << (32-(amount))) | ((unsigned) right >> (amount))