1  /* Zero byte detection, boolean.  Generic C version.
       2     Copyright (C) 2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <http://www.gnu.org/licenses/>.  */
      18  
      19  #ifndef _STRING_FZB_H
      20  #define _STRING_FZB_H 1
      21  
      22  #include <endian.h>
      23  #include <string-fza.h>
      24  
      25  /* Determine if any byte within X is zero.  This is a pure boolean test.  */
      26  
      27  static __always_inline _Bool
      28  has_zero (op_t x)
      29  {
      30    return find_zero_low (x) != 0;
      31  }
      32  
      33  /* Likewise, but for byte equality between X1 and X2.  */
      34  
      35  static __always_inline _Bool
      36  has_eq (op_t x1, op_t x2)
      37  {
      38    return find_eq_low (x1, x2) != 0;
      39  }
      40  
      41  /* Likewise, but for zeros in X1 and equal bytes between X1 and X2.  */
      42  
      43  static __always_inline _Bool
      44  has_zero_eq (op_t x1, op_t x2)
      45  {
      46    return find_zero_eq_low (x1, x2);
      47  }
      48  
      49  #endif /* _STRING_FZB_H */