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author | Nikos Mavrogiannopoulos <nmav@gnutls.org> | 2018-01-21 10:49:45 +0100 |
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committer | Nikos Mavrogiannopoulos <nmav@gnutls.org> | 2018-01-21 10:50:55 +0100 |
commit | 73fa8255ac65985b2a7b5596191892b6027e0c4d (patch) | |
tree | a5e507c78667024dd81e852c80f453b4f2046b37 /lib/gllib/hash-pjw-bare.c | |
parent | 946565d8eb05fbf7970ea366e817581bb5a90910 (diff) | |
download | libtasn1-73fa8255ac65985b2a7b5596191892b6027e0c4d.tar.gz |
Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>
Diffstat (limited to 'lib/gllib/hash-pjw-bare.c')
-rw-r--r-- | lib/gllib/hash-pjw-bare.c | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/lib/gllib/hash-pjw-bare.c b/lib/gllib/hash-pjw-bare.c deleted file mode 100644 index df98147..0000000 --- a/lib/gllib/hash-pjw-bare.c +++ /dev/null @@ -1,42 +0,0 @@ -/* hash-pjw-bare.c -- compute a hash value from a provided buffer. - - Copyright (C) 2012-2017 Free Software Foundation, Inc. - - This program 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. - - This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ - -#include <config.h> - -#include "hash-pjw-bare.h" - -#include <limits.h> - -#define SIZE_BITS (sizeof (size_t) * CHAR_BIT) - -/* Return a hash of the N bytes of X using the method described by - Bruno Haible in http://www.haible.de/bruno/hashfunc.html. - Note that while many hash functions reduce their result via modulo - to a 0..table_size-1 range, this function does not do that. */ - -size_t -hash_pjw_bare (const void *x, size_t n) -{ - const unsigned char *s = x; - size_t h = 0; - unsigned i; - - for (i = 0; i < n; i++) - h = s[i] + ((h << 9) | (h >> (SIZE_BITS - 9))); - - return h; -} |