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Annotation of sys/arch/hppa/spmath/hppa.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: hppa.h,v 1.5 2002/05/07 22:19:30 mickey Exp $ */
                      2: /*
                      3:   (c) Copyright 1986 HEWLETT-PACKARD COMPANY
                      4:   To anyone who acknowledges that this file is provided "AS IS"
                      5:   without any express or implied warranty:
                      6:       permission to use, copy, modify, and distribute this file
                      7:   for any purpose is hereby granted without fee, provided that
                      8:   the above copyright notice and this notice appears in all
                      9:   copies, and that the name of Hewlett-Packard Company not be
                     10:   used in advertising or publicity pertaining to distribution
                     11:   of the software without specific, written prior permission.
                     12:   Hewlett-Packard Company makes no representations about the
                     13:   suitability of this software for any purpose.
                     14: */
                     15: /* @(#)hppa.h: Revision: 2.7.88.1 Date: 93/12/07 15:06:26 */
                     16:
                     17: /* amount is assumed to be a constant between 0 and 32 (non-inclusive) */
                     18: #define Shiftdouble(left,right,amount,dest)                    \
                     19:     /* int left, right, amount, dest; */                       \
                     20:     dest = ((left) << (32-(amount))) | ((unsigned int)(right) >> (amount))
                     21:
                     22: /* amount must be less than 32 */
                     23: #define Variableshiftdouble(left,right,amount,dest)            \
                     24:     /* unsigned int left, right;  int amount, dest; */         \
                     25:     if (amount == 0) dest = right;                             \
                     26:     else dest = ((((unsigned) left)&0x7fffffff) << (32-(amount))) |    \
                     27:        ((unsigned) right >> (amount))
                     28:
                     29: /* amount must be between 0 and 32 (non-inclusive) */
                     30: #define Variable_shift_double(left,right,amount,dest)          \
                     31:     /* unsigned int left, right;  int amount, dest; */         \
                     32:     dest = (left << (32-(amount))) | ((unsigned) right >> (amount))