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Diff for /OpenXM_contrib/gmp/mpf/Attic/cmp_ui.c between version 1.1 and 1.1.1.3

version 1.1, 2000/01/10 15:35:22 version 1.1.1.3, 2003/08/25 16:06:35
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 /* mpf_cmp_ui -- Compare a float with an unsigned integer.  /* mpf_cmp_ui -- Compare a float with an unsigned integer.
   
 Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.  Copyright 1993, 1994, 1995, 1999, 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 23  MA 02111-1307, USA. */
Line 23  MA 02111-1307, USA. */
 #include "gmp-impl.h"  #include "gmp-impl.h"
   
 int  int
 #if __STDC__  mpf_cmp_ui (mpf_srcptr u, unsigned long int vval)
 mpf_cmp_ui (mpf_srcptr u, unsigned long int vlimb)  
 #else  
 mpf_cmp_ui (u, vlimb)  
      mpf_srcptr u;  
      unsigned long int vlimb;  
 #endif  
 {  {
   mp_srcptr up;    mp_srcptr up;
   mp_size_t usize;    mp_size_t usize;
   mp_exp_t uexp;    mp_exp_t uexp;
     mp_limb_t ulimb;
   
   uexp = u->_mp_exp;    uexp = u->_mp_exp;
   usize = u->_mp_size;    usize = u->_mp_size;
Line 43  mpf_cmp_ui (u, vlimb)
Line 38  mpf_cmp_ui (u, vlimb)
     return -1;      return -1;
   /* We rely on usize being non-negative in the code that follows.  */    /* We rely on usize being non-negative in the code that follows.  */
   
   if (vlimb == 0)    if (vval == 0)
     return usize != 0;      return usize != 0;
   
   /* 2. Are the exponents different (V's exponent == 1)?  */    /* 2. Are the exponents different (V's exponent == 1)?  */
   #if GMP_NAIL_BITS != 0
     if (uexp > 1 + (vval > GMP_NUMB_MAX))
       return 1;
     if (uexp < 1 + (vval > GMP_NUMB_MAX))
       return -1;
   #else
   if (uexp > 1)    if (uexp > 1)
     return 1;      return 1;
   if (uexp < 1)    if (uexp < 1)
     return -1;      return -1;
   #endif
   
   up = u->_mp_d;    up = u->_mp_d;
   
 #define STRICT_MPF_NORMALIZATION 0    ulimb = up[usize - 1];
 #if ! STRICT_MPF_NORMALIZATION  #if GMP_NAIL_BITS != 0
     if (usize >= 2 && uexp == 2)
       {
         if ((ulimb >> GMP_NAIL_BITS) != 0)
           return 1;
         ulimb = (ulimb << GMP_NUMB_BITS) | up[usize - 2];
         usize--;
       }
   #endif
     usize--;
   
     /* 3. Compare the most significant mantissa limb with V.  */
     if (ulimb > vval)
       return 1;
     else if (ulimb < vval)
       return -1;
   
   /* Ignore zeroes at the low end of U.  */    /* Ignore zeroes at the low end of U.  */
   while (*up == 0)    while (*up == 0)
     {      {
       up++;        up++;
       usize--;        usize--;
     }      }
 #endif  
   
   /* 3. Now, if the number of limbs are different, we have a difference    /* 4. Now, if the number of limbs are different, we have a difference
      since we have made sure the trailing limbs are not zero.  */       since we have made sure the trailing limbs are not zero.  */
   if (usize > 1)    if (usize > 0)
     return 1;      return 1;
   
   /* 4. Compare the mantissas.  */  
   if (*up > vlimb)  
     return 1;  
   else if (*up < vlimb)  
     return -1;  
   
   /* Wow, we got zero even if we tried hard to avoid it.  */    /* Wow, we got zero even if we tried hard to avoid it.  */
   return 0;    return 0;
Legend:
Removed from v.1.1  
changed lines
  Added in v.1.1.1.3
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