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Diff for /OpenXM_contrib/gmp/mpn/generic/Attic/scan1.c between version 1.1 and 1.1.1.3

version 1.1, 2000/01/10 15:35:23 version 1.1.1.3, 2003/08/25 16:06:20
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 /* mpn_scan1 -- Scan from a given bit position for the next set bit.  /* mpn_scan1 -- Scan from a given bit position for the next set bit.
   
 Copyright (C) 1994, 1996 Free Software Foundation, Inc.  Copyright 1994, 1996, 2001, 2002 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 28  MA 02111-1307, USA. */
Line 28  MA 02111-1307, USA. */
    2. Bit index should be 'unsigned'?     2. Bit index should be 'unsigned'?
   
    Argument constraints:     Argument constraints:
    1. U must sooner ot later have a limb != 0.     1. U must sooner or later have a limb != 0.
  */   */
   
 unsigned long int  unsigned long int
 #if __STDC__  
 mpn_scan1 (register mp_srcptr up,  mpn_scan1 (register mp_srcptr up,
            register unsigned long int starting_bit)             register unsigned long int starting_bit)
 #else  
 mpn_scan1 (up, starting_bit)  
      register mp_srcptr up;  
      register unsigned long int starting_bit;  
 #endif  
 {  {
   mp_size_t starting_word;    mp_size_t starting_word;
   mp_limb_t alimb;    mp_limb_t alimb;
Line 47  mpn_scan1 (up, starting_bit)
Line 41  mpn_scan1 (up, starting_bit)
   mp_srcptr p;    mp_srcptr p;
   
   /* Start at the word implied by STARTING_BIT.  */    /* Start at the word implied by STARTING_BIT.  */
   starting_word = starting_bit / BITS_PER_MP_LIMB;    starting_word = starting_bit / GMP_NUMB_BITS;
   p = up + starting_word;    p = up + starting_word;
   alimb = *p++;    alimb = *p++;
   
   /* Mask off any bits before STARTING_BIT in the first limb.  */    /* Mask off any bits before STARTING_BIT in the first limb.  */
   alimb &= - (mp_limb_t) 1 << (starting_bit % BITS_PER_MP_LIMB);    alimb &= - (mp_limb_t) 1 << (starting_bit % GMP_NUMB_BITS);
   
   while (alimb == 0)    while (alimb == 0)
     alimb = *p++;      alimb = *p++;
   
   count_leading_zeros (cnt, alimb & -alimb);    count_trailing_zeros (cnt, alimb);
   return (p - up) * BITS_PER_MP_LIMB - 1 - cnt;    return (p - up - 1) * GMP_NUMB_BITS + cnt;
 }  }
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Removed from v.1.1  
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  Added in v.1.1.1.3
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