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Diff for /OpenXM_contrib/gmp/mpn/generic/Attic/popcount.c between version 1.1.1.1 and 1.1.1.2

version 1.1.1.1, 2000/01/10 15:35:23 version 1.1.1.2, 2000/09/09 14:12:26
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 /* popcount.c  /* popcount.c
   
 Copyright (C) 1994, 1996 Free Software Foundation, Inc.  Copyright (C) 1994, 1996, 2000 Free Software Foundation, Inc.
   
 This file is part of the GNU MP Library.  This file is part of the GNU MP Library.
   
 The GNU MP Library is free software; you can redistribute it and/or modify  The GNU MP 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  it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation; either version 2 of the License, or (at your  the Free Software Foundation; either version 2.1 of the License, or (at your
 option) any later version.  option) any later version.
   
 The GNU MP Library is distributed in the hope that it will be useful, but  The GNU MP Library is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
 License for more details.  License for more details.
   
 You should have received a copy of the GNU Library General Public License  You should have received a copy of the GNU Lesser General Public License
 along with the GNU MP Library; see the file COPYING.LIB.  If not, write to  along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,  the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 MA 02111-1307, USA. */  MA 02111-1307, USA. */
Line 23  MA 02111-1307, USA. */
Line 23  MA 02111-1307, USA. */
 #include "gmp-impl.h"  #include "gmp-impl.h"
   
 #if defined __GNUC__  #if defined __GNUC__
 #if defined __sparc_v9__ && BITS_PER_MP_LIMB == 64  /* No processor claiming to be SPARC v9 compliant seem to
      implement the POPC instruction.  Disable pattern for now.  */
   #if 0 && defined __sparc_v9__ && BITS_PER_MP_LIMB == 64
 #define popc_limb(a) \  #define popc_limb(a) \
   ({                                                                    \    ({                                                                    \
     DItype __res;                                                       \      DItype __res;                                                       \
Line 39  MA 02111-1307, USA. */
Line 41  MA 02111-1307, USA. */
    You have to figure out how this works, I won't tell you!  */     You have to figure out how this works, I won't tell you!  */
   
 static inline unsigned int  static inline unsigned int
   #if __STDC__
   popc_limb (mp_limb_t x)
   #else
 popc_limb (x)  popc_limb (x)
      mp_limb_t x;       mp_limb_t x;
   #endif
 {  {
 #if BITS_PER_MP_LIMB == 64  #if BITS_PER_MP_LIMB == 64
   /* We have to go into some trouble to define these constants.    /* We have to go into some trouble to define these constants.
      (For mp_limb_t being `long long'.)  */       (For mp_limb_t being `long long'.)  */
   mp_limb_t cnst;    mp_limb_t cnst;
   cnst = 0x55555555L | ((mp_limb_t) 0x55555555L << BITS_PER_MP_LIMB/2);    cnst = 0xaaaaaaaaL | ((mp_limb_t) 0xaaaaaaaaL << BITS_PER_MP_LIMB/2);
   x = ((x & ~cnst) >> 1) + (x & cnst);    x -= (x & cnst) >> 1;
   cnst = 0x33333333L | ((mp_limb_t) 0x33333333L << BITS_PER_MP_LIMB/2);    cnst = 0x33333333L | ((mp_limb_t) 0x33333333L << BITS_PER_MP_LIMB/2);
   x = ((x & ~cnst) >> 2) + (x & cnst);    x = ((x & ~cnst) >> 2) + (x & cnst);
   cnst = 0x0f0f0f0fL | ((mp_limb_t) 0x0f0f0f0fL << BITS_PER_MP_LIMB/2);    cnst = 0x0f0f0f0fL | ((mp_limb_t) 0x0f0f0f0fL << BITS_PER_MP_LIMB/2);
Line 57  popc_limb (x)
Line 63  popc_limb (x)
   x = ((x >> 32) + x) & 0xff;    x = ((x >> 32) + x) & 0xff;
 #endif  #endif
 #if BITS_PER_MP_LIMB == 32  #if BITS_PER_MP_LIMB == 32
   x = ((x >> 1) & 0x55555555L) + (x & 0x55555555L);    x -= (x & 0xaaaaaaaa) >> 1;
   x = ((x >> 2) & 0x33333333L) + (x & 0x33333333L);    x = ((x >> 2) & 0x33333333L) + (x & 0x33333333L);
   x = ((x >> 4) + x) & 0x0f0f0f0fL;    x = ((x >> 4) + x) & 0x0f0f0f0fL;
   x = ((x >> 8) + x);    x = ((x >> 8) + x);
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Removed from v.1.1.1.1  
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  Added in v.1.1.1.2
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