aboutsummaryrefslogtreecommitdiff
path: root/locale/elem-hash.h
blob: 3e07fefdd922c19eae332cb4b62ed7cdb43ba328 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
/* Copyright (C) 1999-2021 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Written by Ulrich Drepper, <drepper@cygnus.com>.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */


/* The hashing function used for the table with collation symbols.  */
static int32_t __attribute__ ((pure, unused))
elem_hash (const char *str, int_fast32_t n)
{
  int32_t result = n;

  while (n-- > 0)
    {
      result <<= 3;
      result += *str++;
    }

  return result;
}