Coverage Report

Created: 2024-11-21 07:03

/src/libgmp/mpz/realloc.c
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/* _mpz_realloc -- make the mpz_t have NEW_ALLOC digits allocated.
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Copyright 1991, 1993-1995, 2000, 2001, 2008, 2015, 2021, 2022 Free
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Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of either:
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  * the GNU Lesser General Public License as published by the Free
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    Software Foundation; either version 3 of the License, or (at your
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    option) any later version.
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or
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  * the GNU General Public License as published by the Free Software
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    Foundation; either version 2 of the License, or (at your option) any
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    later version.
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or both in parallel, as here.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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for more details.
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You should have received copies of the GNU General Public License and the
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GNU Lesser General Public License along with the GNU MP Library.  If not,
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see https://www.gnu.org/licenses/.  */
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#include "gmp-impl.h"
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void *
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_mpz_realloc (mpz_ptr m, mp_size_t new_alloc)
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{
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  mp_ptr mp;
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  /* Never allocate zero space. */
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  new_alloc = MAX (new_alloc, 1);
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  if (sizeof (mp_size_t) == sizeof (int))
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0
    {
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0
      if (UNLIKELY (new_alloc > ULONG_MAX / GMP_NUMB_BITS))
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0
  MPZ_OVERFLOW;
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0
    }
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  else
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    {
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      if (UNLIKELY (new_alloc > INT_MAX))
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0
  MPZ_OVERFLOW;
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    }
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  if (ALLOC (m) == 0)
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    {
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      mp = __GMP_ALLOCATE_FUNC_LIMBS (new_alloc);
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    }
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  else
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    {
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      mp = __GMP_REALLOCATE_FUNC_LIMBS (PTR (m), ALLOC (m), new_alloc);
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      /* Don't create an invalid number; if the current value doesn't fit after
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   reallocation, clear it to 0.  */
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      if (UNLIKELY (ABSIZ (m) > new_alloc))
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0
  SIZ (m) = 0;
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    }
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  PTR (m) = mp;
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  ALLOC(m) = new_alloc;
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  return (void *) mp;
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}