glibc/locale/elem-hash.h

34 lines
1.1 KiB
C

/* Copyright (C) 1999-2017 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
<http://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;
}