1  /* mpz_cmpabs(u,v) -- Compare U, V.  Return positive, zero, or negative
       2     based on if U > V, U == V, or U < V.
       3  
       4  Copyright 1991, 1993, 1994, 1996, 1997, 2000-2002, 2020 Free Software
       5  Foundation, Inc.
       6  
       7  This file is part of the GNU MP Library.
       8  
       9  The GNU MP Library is free software; you can redistribute it and/or modify
      10  it under the terms of either:
      11  
      12    * the GNU Lesser General Public License as published by the Free
      13      Software Foundation; either version 3 of the License, or (at your
      14      option) any later version.
      15  
      16  or
      17  
      18    * the GNU General Public License as published by the Free Software
      19      Foundation; either version 2 of the License, or (at your option) any
      20      later version.
      21  
      22  or both in parallel, as here.
      23  
      24  The GNU MP Library is distributed in the hope that it will be useful, but
      25  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      26  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      27  for more details.
      28  
      29  You should have received copies of the GNU General Public License and the
      30  GNU Lesser General Public License along with the GNU MP Library.  If not,
      31  see https://www.gnu.org/licenses/.  */
      32  
      33  #include "gmp-impl.h"
      34  
      35  
      36  int
      37  mpz_cmpabs (mpz_srcptr u, mpz_srcptr v) __GMP_NOTHROW
      38  {
      39    mp_size_t  usize, vsize;
      40    mp_srcptr  up, vp;
      41    int        cmp;
      42  
      43    usize = ABSIZ (u);
      44    vsize = ABSIZ (v);
      45    /* Cannot use usize - vsize, may overflow an "int" */
      46    if (usize != vsize)
      47      return (usize > vsize) ? 1 : -1;
      48  
      49    up = PTR(u);
      50    vp = PTR(v);
      51    MPN_CMP (cmp, up, vp, usize);
      52    return cmp;
      53  }