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Linux/arch/parisc/math-emu/hppa.h

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  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))
 43 

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